CN101257400B

CN101257400B - Optical node device, optical path setting method and 3R relay implementation node decision method

Info

Publication number: CN101257400B
Application number: CN2008100022490A
Authority: CN
Inventors: 大木英司; 三泽明; 片山胜; 冈本聪
Original assignee: Nippon Telegraph and Telephone Corp
Current assignee: Nippon Telegraph and Telephone Corp
Priority date: 2003-03-14
Filing date: 2004-03-12
Publication date: 2012-06-20
Anticipated expiration: 2024-03-12
Also published as: CN100411349C; CN101257400A; CN1698312A

Abstract

The present invention provides an optical node device, network control device, maintaining device and optical network and judging method of carrying out node of 3R relay. It is possible to constitute an economical optical network by effectively using network resources by using the bare minimum number or capacity of 3R relay device. A local device holds 3R section information corresponding to topology information on the optical network to which the local device belongs and references the 3R section information held so as to autonomously judge whether the local device is an optical node device for carrying out the 3R relay when setting an optical path via the local device. Alternatively, when the local device is a source node, the local device specifies another optical node device for carrying out the 3R relay among the other optical node devices via which the optical path from the local device to the destination node passes and requests the optical node device specified to carry out the 3R relay when setting an optical path in which the local device is a source node.

Description

Optical node device, light path establishing method and 3R relay implementation node decision method

The application divides an application for following female case:

The applying date: on March 12nd, 2004

Application number: 200480000422.3

Denomination of invention: optical node device, net control device, service equipment, light net and 3R relay implementation node decision method

Technical field

The present invention is used to exchange the light net that connects light signal.Be particularly related to the light net that comprises the optical node device that carries out 3R (Reshaping, Retiming, Regenerating (shaping, timing again, regeneration)) relaying.

The application advocates priority to (Japan) of application on March 14th, 2003 special 2003-69216 of hope, the special 2003-69223 of hope, the special 2003-69233 of hope, the special 2003-69246 of hope, quotes its content here.

Background technology

In the light net, consider optical fiber loss, crosstalk, need in the way of optical transmission line, implement the 3R relaying.Existing smooth web frame is shown in Figure 87.In order to implement the 3R relaying, insert 3R repeater 1002 in the optical node device 1001 in the optical transmission line road.In fact; Do not carry out the 3R relaying and can transmit certain distance yet; So 3R repeater 1002 not being set in all optical node devices 1001 should be also passable; But do not carry out the optics that distance that the 3R relaying also can transmit has because of optical node device performance, the optical fiber between optical node device material or use wavelength etc. different; So its distance can not uniformly determine do not have high-efficiency method in the overall optical net, to ask and do not carry out the distance that the 3R relaying also can transmit, and is shown in Figure 87 in the past; In at different levels, insert 3R repeater 1002 respectively, make the deterioration (for example with reference to non-patent

literature

1,2,3) that on any route set path can both compensated optical signal.

Patent Document 1: (Japan) large wooden Eiji, Shimazaki masterpiece, salt of the fair, Matsuura stretch Zhao, Imajuku Wataru, mountains straight out, "decentralized Royal ni ょ ru da ィ Nana mini ッ ku wavelength conversion GMPLS Neko ッ Suites ヮ a black Performance Evaluation", IEICE Technical Report, associations Legal IEICE, February 2002, p.5-10

Non-patent literature 2:Ken-ichi Sato, Naoaki Yamanaka, YoshihiroTakigawa; Masafumi Koga, Satoru Okamoto, Kohei Shiomoto; Eiji Oki; Wataru Imajuku, " GMPLS-Based Photonic Multilayer Router (Hikari Router) Architecture:An Overview of TrafficEngineering and Signaling Technology ", IEEE CommunicationsMagazine; March 2002, p.96-101

Non-patent literature 3:Eiji Oki, Daisaku Shimazaki, Kohei Shiomoto; Nobuaki Matsuura, Wataru Imajuku, Naoaki Yamanaka; " Performanceof Distributed-Controlled Dynamic Wavelength-Conversion GMPLSNetworks "; First International Conference on OpticalCommunications and Networks 2002, November 11-14,2002; Shangri-La Hotel, Singapore

The 3R repeater is very expensive, if do not use this 3R repeater then the light net can be realized extremely economically as far as possible.But, do not have effective method in the overall optical net, to ask in the past and do not carry out the distance that the 3R relaying also can transmit, so can not obtain the position that yet can not comprise the 3R repeater.

Moreover, with each optical node device all light paths via this optical node device were implemented the 3R relaying in the past, for this reason, the 3R repeater also need possess the ability that can carry out the 3R relaying to many light paths simultaneously, is difficult to reduce cost.

Summary of the invention

The present invention proposes under this background, and its purpose is to provide a kind of optical node device and light net, and the 3R repeater of enough required minimum numbers of ability or required minimum ability effectively utilizes Internet resources, constitutes economic light net.

The present invention does not carry out the interval that the 3R relaying just can transmit data through utilizing efficiently--and 3R is interval; Perhaps generate the 3R block information efficiently; Can save the waste that at the position that need not the 3R relaying 3R repeater is set and causes, effectively utilize Internet resources, reduce the cost of light net.Perhaps; Position through specific needs 3R relaying; Can only implement the 3R relaying, so can reduce the ability of 3R repeater from via extracting the light path that really need carry out the 3R relaying a plurality of light paths of the optical node device that comprises the 3R repeater with this optical node device to this light path; So can effectively utilize Internet resources, reduce the cost of light net.

Wherein, In following explanation; To be that 3R is interval without the predefined section definition that the 3R relaying just can transmit data; To be defined as the 3R source node as the optical node device of the interval starting point of this 3R, will be defined as the 3R destination node, the optical node device that sends light path setting request will be defined as source node as the optical node device of the interval terminal point of this 3R; To be defined as destination node as the optical node device of the terminal point of this light path; At this light path when being two-way, will be defined as descending light path from the light path that above-mentioned source node points to the direction of above-mentioned purpose node, will be defined as up light path from the light path that the above-mentioned purpose node points to the direction of above-mentioned source node.

That is, first viewpoint of the present invention is a kind of optical node device that connects light signal that exchanges, and comprising: holding member keeps the corresponding 3R information of topology information with oneself affiliated light net; And decision means, with reference to the above-mentioned 3R block information that keeps in this holding member, when setting, judge independently whether oneself is the optical node device that will implement the 3R relaying via oneself light path.

Like this, each optical node device keeps 3R block information, thereby when on own, setting light path, if know the source node of this light path, can judge independently then whether oneself will implement the 3R relaying to the light signal that transmits on this light path.

Perhaps, optical node device of the present invention also can comprise: holding member keeps the corresponding 3R block information of topology information with oneself affiliated light net; Specific features, with reference to the above-mentioned 3R block information that keeps in this holding member, when oneself is source node, the light path from own to destination node via other optical node devices specific other optical node devices that will implement the 3R relaying; And the request parts, ask specific above-mentioned other optical node devices that go out of this specific features to implement the 3R relaying when oneself being the light path of source node setting.

In view of the above, the optical node device beyond the source node also can not judge whether to implement the 3R relaying, so can alleviate corresponding processing burden.For example; Many light paths are via in this optical node device, if all these light paths are judged whether to implement the 3R relaying, it is huge then to handle burden; In the case; If only to the light path of this optical node device as source node, to the light path of destination node via other optical node devices in specific other optical node devices that will implement the 3R relaying, then can alleviate the processing burden.In addition, in the case, have only the optical node device suitable to keep the 3R block information to get final product, can effectively utilize the information stores resource with source node.

Perhaps, optical node device of the present invention also can comprise: holding member, oneself be between above-mentioned source node and the above-mentioned purpose node light path via optical node device the time keep the corresponding 3R block information of topology information with own affiliated light net; And decision means, with reference to the above-mentioned 3R block information that keeps in the above-mentioned holding member, judge independently whether oneself is the optical node device that will implement the 3R relaying to this light path.

In view of the above, each optical node device only just keeps the 3R block information when existing via oneself light path, so can effectively utilize the information stores resource.

In addition, best, when above-mentioned light path was the bi-directional light path, above-mentioned decision means or above-mentioned specific features comprised: the decision parts, and to descending light path and this two-way optical node device that determines to implement the 3R relaying respectively of up light path.

In view of the above, can be when the signaling that up light path is set, the decision uplink dual to the optical node device that will implement the 3R relaying, can be behind the end of signaling transmitting optical signal immediately, so can realize the high speed that light path is set.

In addition, to interval, be the 3R source node on some 3R interval and when on other 3R intervals, not serving as 3R source node or 3R destination node at this optical node device via a plurality of different 3R that comprises repeating part on the light path of an optical node device,

Best; Above-mentioned decision means or above-mentioned specific features comprise: comparing unit, and the 3R under the situation of reference and the effect that comes a more above-mentioned optical node device 3R source node from an above-mentioned optical node device to the related 3R block information of the light path of destination node and the situation both of these case of the not effect of 3R source node implements number of times; With the decision parts; Comparative result according to this comparing unit; The situation that plays the 3R source node at an above-mentioned optical node device is implemented number of times after a little while than the situation 3R that an above-mentioned optical node device does not play the 3R source node, determine for an above-mentioned optical node device be the optical node device that will implement the 3R relaying.

In view of the above, can come transmitting optical signal,, constitute economic light net so the 3R repeater of enough required minimum numbers of ability or required minimum ability effectively utilizes Internet resources with the least possible 3R relay implementation number.

In addition; Best; Be the optical node device suitable at an optical node device with the 3R destination node, when being not destination node; Above-mentioned decision means or above-mentioned specific features comprise: the decision parts determine the optical node device that will an above-mentioned optical node device be implemented the 3R relaying as 3R destination node, an above-mentioned optical node device as the 3R source node, with the optical node device of next jumping for being.

In view of the above, even be that 3R destination node, this optical node device do not keep can successfully realizing the 3R relay transmission under the situation of own later 3R block information yet at an optical node device.

In addition; Best; When an optical node device does not belong to any 3R interval that on the light path via this optical node device, has the 3R source node; Above-mentioned decision means or above-mentioned specific features comprise: the decision parts, determine for be will will an above-mentioned optical node device as the 3R source node, with the optical node device of next jumping of an above-mentioned optical node device optical node device as 3R destination node, above-mentioned optical node device enforcement 3R relaying.

In addition; Best; Comprise: see parts off; An optical node device be on the up light path the 3R source node but whether destination node, when an above-mentioned optical node device is not the 3R destination node on this up light path, see that to be used for the optical node device of the previous dive on the up light path be the message that an above-mentioned optical node device is passed to the optical node device of above-mentioned previous dive as the 3R source node of 3R destination node off; Above-mentioned decision means or above-mentioned specific features comprise: the decision parts when on up light path, oneself having accepted this message, determine to oneself being with the 3R source node of the optical node device of seeing this message off as the 3R destination node on up light path.

In view of the above, even do not meet the optical node device of existing any 3R block information, also can successfully carry out the 3R relaying.Therefore, not all the interval 3R of maintenance block informations, but only keep the 3R block information of important part to get final product, so can keep the 3R block information expeditiously the light net.

Perhaps, optical node device of the present invention also can comprise: holding member keeps own 3R block information as the 3R source node; With see parts off; The expression of accepting to comprise in the light path setting request oneself is the message of 3R destination node; When oneself being not destination node, with reference to above-mentioned holding member, when oneself being the 3R source node on this light path; Being judged as is the optical node device that will implement the 3R relaying, and to own seeing off as the interval suitable optical node device of 3R destination node of the 3R on the light path of 3R source node is used to transmit the message that this optical node device is the 3R destination node.

In view of the above, need not to keep and own irrespective 3R block information, can effectively utilize the information stores resource.

Moreover; Best, the expression of accepting to comprise in the light path setting request oneself is the message of 3R destination node, when oneself being not destination node; With reference to above-mentioned holding member; When oneself not being the 3R source node on this light path, being judged as is will be with own as the 3R source node, the optical node device of next jumping is implemented the optical node device of 3R relaying as the 3R destination node, and sees off to the optical node device of this next jumping and to be used to transmit the message that this optical node device is the 3R destination node.

Thus, even the 3R source node only keeps and the own relevant 3R block information to the 3R destination node, also can successfully realize the 3R relay transmission that this 3R destination node is later.

Wherein, In the case, keeping own 3R block information, but do not keeping other 3R block informations as the 3R source node; So will set the message that comprises in the request according to light path, judge whether oneself need play 3R source node or 3R destination node.

For example; To being the optical node device of the 3R source node in the 3R interval on certain light path; When light path is set request arrival, on the light path of setting according to this light path setting request, also can use the 3R interval in addition, 3R interval that this optical node device keeps sometimes.But the 3R block information that is difficult to have according to this optical node device is judged this.Therefore, optical node device will judge whether needs play 3R source node or 3R destination node for oneself according to the message that comprises in the light path setting request.

Perhaps, optical node device of the present invention also can comprise: holding member keeps own 3R block information as 3R source node and 3R destination node; See parts off; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R destination node on the descending light path; When oneself being not destination node; With reference to above-mentioned holding member; When oneself being the 3R source node on this descending light path, being judged as is the optical node device that will implement the 3R relaying, and to own seeing off as the interval suitable optical node device of 3R destination node of the 3R on the descending light path of 3R source node is used to transmit the message that this optical node device is the 3R destination node; And

See parts off; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R source node on the up light path; Being judged as oneself is the optical node device that will on up light path, implement the 3R relaying; And when oneself being not destination node; With reference to above-mentioned holding member, when oneself being the 3R destination node on this up light path, to own seeing off as the suitable optical node device of 3R source node on the up light path of 3R destination node is used to transmit the message that this optical node device is the 3R source node.

In view of the above, need not to keep and own irrespective 3R block information, can effectively utilize the information stores resource, set the optical node device that will implement the 3R relaying on the bi-directional light path simultaneously.

Moreover; Best; Comprise: see parts off, the expression of accepting to comprise in the light path setting request oneself is the message of the 3R destination node on the descending light path, when oneself being not destination node; With reference to above-mentioned holding member; When oneself not being the 3R source node on this descending light path, being judged as is will be with own as the 3R source node, the optical node device of next jumping on the descending light path is implemented the optical node device of 3R relaying as the 3R destination node, and sees off to the optical node device of this next jumping and to be used to transmit the message that this optical node device is the 3R destination node of oneself; And see parts off; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R source node on the up light path; Being judged as oneself is the optical node device that will on up light path, implement the 3R relaying; And when oneself being not destination node; With reference to above-mentioned holding member, when oneself not being the 3R destination node on this up light path, seeing the optical node device that is used for the previous dive on the up light path off is the message that passes to the optical node device of this previous dive as the 3R source node of 3R destination node with own.

In view of the above, even in the optical node device that oneself does not keep the 3R block information, also can successfully realize the 3R relay transmission on the bi-directional light path.

Wherein, In the case, keeping own 3R block information, but do not keeping other 3R block informations as 3R source node and 3R destination node; So will set the message that comprises in the request according to light path, judge whether oneself need play 3R source node or 3R destination node.

For example; To being the 3R source node in the 3R interval on certain light path or the optical node device of 3R destination node; When light path is set request arrival, on the light path of setting according to this light path setting request, also can use the 3R interval in addition, 3R interval that this optical node device keeps sometimes.But the 3R block information that is difficult to have according to this optical node device is judged this.Therefore, optical node device will judge whether needs play 3R source node or 3R destination node for oneself according to the message that comprises in the light path setting request.

Second viewpoint of the present invention is a kind of net control device, and management comprises that exchange connects a plurality of optical node devices and the light net that is connected the optical transmission line between these a plurality of optical node devices of light signal.

Here, net control device of the present invention comprises: holding member keeps the 3R block information corresponding with the topology information of above-mentioned light net; With parts are provided, according to request the above-mentioned 3R block information that keeps in this holding member is offered this optical node device from above-mentioned optical node device.

In addition, optical node device of the present invention comprises: obtain parts, the net control device of the light net under the request management oneself provides the 3R block information corresponding with the topology information of this light net and obtains this 3R block information.

Moreover best, the above-mentioned parts of obtaining comprise: holding member, from the above-mentioned 3R block information of obtaining, select and maintenance and own relevant at least a portion information.

That is, in the present invention, following situation is arranged: all optical node devices keep same 3R block information; Existence keeps the 3R block information via the optical node device of the light path of this optical node device; The source node of light path keeps the 3R block information; 3R source node or 3R destination node keep and own relevant 3R block information.

In order to tackle these situation neatly, if having 3R block information with each optical node device request promptly to offer the parts of each optical node device then very convenient.For example; Net control device is set; This net control device offers each optical node device according to the request from each optical node device with required 3R block information, and through adopting this structure, each optical node device can promptly be obtained own required 3R block information.

For example; All keep at all optical node devices under the situation of common 3R block information; Optical node device of the present invention comprises: obtain parts, the net control device request of the light net under management is own also obtains the corresponding 3R block information of topology information with own affiliated light net; With the advertisement parts, keep this to obtain above-mentioned 3R block information and the advertisement that parts obtain and give other optical node devices.

In view of the above; A part of optical node device is made as to the net control device request and obtains the optical node device of 3R block information; Obtained a part of optical node device advertisement of 3R block information from net control device and given other optical node devices, thereby all optical node devices can keep common 3R block information.This mode preferably be applied to all optical node devices respectively to net control device request and the situation that obtains the 3R block information mutually specific energy effectively utilize the situation of Internet resources.

For example; Keep at the optical node device on the path between source node and the destination node under the situation of 3R block information; Optical node device of the present invention comprises: obtain parts, the net control device request of the light net when oneself is source node under management is own also obtains the corresponding 3R block information of topology information with own affiliated light net; And transferring elements, keep this to obtain the above-mentioned 3R block information that parts obtain and pass to and to the light path of destination node, comprise other optical node devices during as source node with own.

In view of the above; The optical node device suitable with source node can and be obtained the 3R block information to the net control device request; The 3R block information of obtaining is passed to other optical node devices on the path; So compare to net control device request and the situation that obtains the 3R block information respectively with optical node device on the path, can alleviate the processing burden of the optical node device on net control device and the path.

Perhaps; Keep at the optical node device on the path between source node and the destination node under the situation of 3R block information; Optical node device of the present invention also can comprise: obtain parts, the net control device request of the light net when oneself is source node under management is own also obtains the corresponding 3R block information of topology information with own affiliated light net; With the advertisement parts, keep this to obtain above-mentioned 3R block information and the advertisement that parts obtain and give other optical node devices; Be provided with: decision means, the advertisement of judging above-mentioned advertisement parts whether be with via the related advertisement of the light path of oneself; Comprise: abandoning parts, according to the judged result of this decision means, is to abandon above-mentioned advertisement during with the above-mentioned irrespective advertisement of light path via oneself in above-mentioned advertisement; Comprise: holding member according to the judged result of above-mentioned decision means, is to keep above-mentioned ad content during with the above-mentioned related advertisement of light path via oneself in above-mentioned advertisement.

In view of the above, the optical node device suitable with source node is to the net control device request and obtain the 3R block information, gives other optical node devices with the 3R block information advertisement that obtains.At this moment, the optical node device suitable with source node need not advertising objective is restricted to other optical node devices on the path, can cut down the required processing burden of this restriction.Be under the situation with own irrespective advertisement, the optical node device of having accepted advertisement is abandoned it and is got final product.

Perhaps, optical node device of the present invention comprises: holding member, the information of the jumping figure H between the own and 3R destination node on the 3R interval under maintenance is own; And decision means, judge independently whether oneself will implement the 3R relaying to the light signal that the 3R source node on the 3R interval under oneself is seen off; Establish the 3R trunk line number that oneself comprises be the threshold value of T, idle 3R trunk line number be TH_T, when the threshold value of the jumping figure of 3R destination node is TH_H, if

T＞TH_T and H＜TH_H

Then this decision means is judged as and will implements the 3R relaying.

Promptly; Be that 3R destination node, oneself the disposal ability of 3R trunk line have under the situation of allowance after but this optical node device is not a little several jumping of 3R destination node; Oneself implements the 3R relaying for the 3R destination node, thereby can alleviate the 3R relaying burden of the optical node device suitable with 3R destination node (being the interval 3R source node of next 3R).

Threshold value TH_T and TH_H come suitably to set according to the 3R relay capabilities of this optical node device or the optical node device suitable with the 3R destination node.For example; The 3R trunk line number of the 3R source node that next 3R is interval is compared few more with the 3R trunk line number of this optical node device; Then the necessity of the 3R relaying of the 3R source node in next 3R interval of this optical node device assistance is big more; So preferably set TH_T little, if in the 3R of this optical node device trunk line, produce the free time a little, then this optical node device is just implemented the 3R relaying that the 3R relaying is helped the interval 3R source node of next 3R.But; Even if under the big situation of the jumping figure of the interval 3R source node of next 3R; The 3R trunk line number of this optical node device has allowance, and this optical node device is also implemented the 3R relaying for the interval 3R source node of next 3R, and then the 3R enforcement number of times to destination node might increase.Therefore, TH_H is preferably little.

Like this, consider whole 3R interval jumping figure and 3R destination node, be that the 3R trunk line number of the interval 3R source node of next 3R comes suitably to set TH_T and TH_H.

The 3rd viewpoint of the present invention is a kind of light net, comprises optical node device of the present invention or net control device of the present invention.

The 4th viewpoint of the present invention is a kind of 3R relay implementation node decision method; Wherein, To interval via a plurality of different 3R that comprises repeating part on the light path of an optical node device; At this optical node device is the 3R source node on some 3R interval and when on other 3R intervals, not serving as 3R source node or 3R destination node; 3R under the situation of reference and the effect that comes a more above-mentioned optical node device 3R source node from an above-mentioned optical node device to the related 3R block information of the light path of destination node and the situation both of these case of the not effect of 3R source node implements number of times; According to this comparative result; The situation that plays the 3R source node at an above-mentioned optical node device is implemented number of times after a little while than the situation 3R that an above-mentioned optical node device does not play the 3R source node, determine for an above-mentioned optical node device be the optical node device that will implement the 3R relaying.

Perhaps; 3R relay implementation node decision method of the present invention is the optical node device suitable with the 3R destination node at an optical node device, when being not destination node, determines the optical node device that will an above-mentioned optical node device be implemented the 3R relaying as 3R destination node, an above-mentioned optical node device as the 3R source node, with the optical node device of next jumping for being.

Perhaps; 3R relay implementation node decision method of the present invention does not belong to any 3R that on the light path via this optical node device, has the 3R source node when interval at an optical node device, determine for be will an above-mentioned optical node device as the 3R source node, with the optical node device of next jumping of an above-mentioned optical node device optical node device as 3R destination node, above-mentioned optical node device enforcement 3R relaying.

Perhaps; 3R relay implementation node decision method of the present invention an optical node device be on the up light path the 3R source node but whether destination node, when an above-mentioned optical node device is not the 3R destination node on this up light path, see that to be used for the optical node device of the previous dive on the up light path be the message that an above-mentioned optical node device is passed to the optical node device of above-mentioned previous dive as the 3R source node of 3R destination node off; The optical node device decision of on up light path, having accepted this message is oneself to be with the 3R source node of the optical node device of seeing this message off as the 3R destination node on up light path.

Perhaps; 3R relay implementation node decision method of the present invention is; The optical node device suitable with the 3R source node keeps and own relevant 3R block information, and the expression of accepting to comprise in the light path setting request is the message of 3R destination node, when this optical node device is not destination node; With reference to above-mentioned 3R block information; When oneself being the 3R source node on this light path, being judged as is the optical node device that will implement the 3R relaying, and to own seeing off as the interval suitable optical node device of 3R destination node of the 3R on the light path of 3R source node is used to transmit the message that this optical node device is the 3R destination node.

Moreover; Best, the expression of accepting to comprise in the light path setting request oneself is the message of 3R destination node, when oneself being not destination node; With reference to above-mentioned 3R block information; When oneself not being the 3R source node on this light path, being judged as is will be with own as the 3R source node, the optical node device of next jumping is implemented the optical node device of 3R relaying as the 3R destination node, and sees off to the optical node device of this next jumping and to be used to transmit the message that this optical node device is the 3R destination node.

Perhaps; 3R relay implementation node decision method of the present invention keeps own 3R block information as 3R source node and 3R destination node; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R destination node on the descending light path; When oneself being not destination node, with reference to above-mentioned 3R block information, when oneself being the 3R source node on this descending light path; Being judged as is the optical node device that will implement the 3R relaying, and to own seeing off as the interval suitable optical node device of 3R destination node of the 3R on the descending light path of 3R source node is used to transmit the message that this optical node device is the 3R destination node; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R source node on the up light path; Being judged as oneself is the optical node device that will on up light path, implement the 3R relaying; And when oneself being not destination node; With reference to above-mentioned 3R block information; When oneself being the 3R destination node on this up light path, to own seeing off as the suitable optical node device of 3R source node on the up light path of 3R destination node is used to transmit the message that this optical node device is the 3R source node.

Moreover; Best; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R destination node on the descending light path; When oneself being not destination node, with reference to above-mentioned 3R block information, when oneself not being the 3R source node on this descending light path; Being judged as is will be with own as the 3R source node, the optical node device of next jumping on the descending light path is implemented the optical node device of 3R relaying as the 3R destination node, and sees off to the optical node device of this next jumping and to be used to transmit the message that this optical node device is the 3R destination node of oneself; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R source node on the up light path; Being judged as oneself is the optical node device that will on up light path, implement the 3R relaying; And when oneself being not destination node; With reference to above-mentioned 3R block information; When oneself not being the 3R destination node on this up light path, seeing the optical node device that is used for the previous dive on the up light path off is the message that passes to the optical node device of this previous dive as the 3R source node of 3R destination node with own.

Perhaps; 3R relay implementation node decision method of the present invention the jumping figure between the own and 3R destination node of establishing on the 3R interval under the optical node device be 3R trunk line number that H, this optical node device comprise be the threshold value of T, idle 3R trunk line number be TH_T, when the threshold value of the jumping figure of 3R destination node is TH_H, if

T＞TH_T and H＜TH_H

Then being judged as an above-mentioned optical node device is the optical node device that will implement the 3R relaying.

The 5th viewpoint of the present invention is a kind of optical node device that connects light signal that exchanges; Wherein, Set the label of specifying the wavelength that uses successively from source node when the exchange that is included in the request from the source node to the destination node connects at light path, wavelength of every use is just deleted this label; Above-mentioned exchange link comprises wavelength conversion parts or 3R relay part; Comprise: holding member, the information of the jumping figure H between the own and 3R destination node on the 3R interval under maintenance is own; And decision means, judge independently whether oneself will implement the 3R relaying to the light signal that the 3R source node on the 3R interval under oneself is seen off; Establishing trunk line number that above-mentioned wavelength conversion parts or above-mentioned 3R relay part comprise is that the threshold value of T, idle trunk number is TH_T, is that TH_H, remaining number of tags are the threshold value of L, remaining number of tags when being TH_L to the threshold value of the jumping figure of 3R destination node, if

T＞TH_T and (H＜TH_H and L＜TH_L)

Or

T＞TH_T and (H＜TH_H or L＜TH_L)

Then this decision means is judged as and will implements the 3R relaying.

Wherein, best, be included in oneself belong to destination node as the 3R of 3R destination node when interval no matter how the judged result of above-mentioned decision means all is judged as the parts of oneself not implementing the 3R relaying.

In addition, optical node device of the present invention will be defined as descending light path from the light path that source node points to destination node under light path is two-way situation, will be defined as up light path from the light path that destination node is pointed to source node; Set the label of specifying the wavelength that uses successively from source node when the exchange that is included in the request from the source node to the destination node connects at light path, wavelength of every setting is just deleted this label; Above-mentioned exchange link comprises wavelength conversion parts or 3R relay part; Comprise: holding member keeps the information of the jumping figure H between the own and 3R destination node on the 3R interval under own on the up light path; And decision means, judge independently whether oneself will implement the 3R relaying to the light signal that the 3R source node on the own affiliated 3R interval from up light path is seen off; Establishing trunk line number that above-mentioned wavelength conversion parts or above-mentioned 3R relay part comprise is that the threshold value of T, idle trunk number is TH_T, is that TH_H, remaining number of tags are the threshold value of L, remaining number of tags when being TH_L to the threshold value of the jumping figure of 3R destination node, if

T＞TH_T and (H＜TH_H and L＞TH_L)

Or

T＞TH_T and (H＜TH_H or L＞TH_L)

Then this decision means is judged as and will implements the 3R relaying.

Best, be included in oneself belong to source node as the 3R of 3R destination node when interval no matter how the judged result of above-mentioned decision means all is judged as the parts of oneself not implementing the 3R relaying.

The 6th viewpoint of the present invention is a kind of light net, is made up of optical node device of the present invention.

The 7th viewpoint of the present invention is a kind of 3R relay implementation node decision method that exchanges in the optical node device that connects light signal; Wherein, Set the label of specifying the wavelength that uses successively from source node when the exchange that is included in the request from the source node to the destination node connects at light path, wavelength of every use is just deleted this label; Keep above-mentioned optical node device and the information of the jumping figure H between the 3R destination node on the 3R interval under the above-mentioned optical node device; When judging independently whether above-mentioned optical node device will implement the 3R relaying to the light signal that the 3R source node on the 3R interval under above-mentioned optical node device is seen off; Establishing the trunk line number with the function of carrying out wavelength conversion or 3R relaying is that the threshold value of T, idle trunk number is TH_T, is that TH_H, remaining number of tags are the threshold value of L, remaining number of tags when being TH_L to the threshold value of the jumping figure of 3R destination node, if

T＞TH_T and (H＜TH_H and L＜TH_L)

Or

T＞TH_T and (H＜TH_H or L＜TH_L)

Then be judged as and implement the 3R relaying.

Wherein, best, oneself belonging to destination node as the 3R of 3R destination node when interval, no matter above-mentioned judged result how, all is judged as oneself and does not implement the 3R relaying.

In addition, 3R relay implementation node decision method of the present invention is under the situation in bi-directional light path at light path, will be defined as descending light path from the light path that source node points to destination node, will be defined as up light path from the light path that destination node is pointed to source node; Set the label of specifying the wavelength that uses successively from source node when the exchange that is included in the request from the source node to the destination node connects at light path, wavelength of every setting is just deleted this label; The information that keeps the jumping figure H between the own and 3R destination node on the own affiliated 3R interval on the up light path; When judging independently whether oneself will implement the 3R relaying to the light signal that the 3R source node on the own affiliated 3R interval from up light path is seen off; Establishing the trunk line number that possesses the function of carrying out wavelength conversion or 3R relaying is that the threshold value of T, idle trunk number is TH_T, is that TH_H, remaining number of tags are the threshold value of L, remaining number of tags when being TH_L to the threshold value of the jumping figure of 3R destination node, if

T＞TH_T and (H＜TH_H and L＞TH_L)

Or

T＞TH_T and (H＜TH_H or L＞TH_L)

Then be judged as and implement the 3R relaying.

Best, oneself belonging to source node as the 3R of 3R destination node when interval, no matter above-mentioned judged result how, all is judged as oneself and does not implement the 3R relaying.

In addition, the 3R relaying not only can use the special-purpose 3R repeater of 3R relaying, and can the wavelength shifter that temporarily is transformed to light signal the signal of telecommunication and is transformed to light signal once more be used for the 3R relaying.In the case; Set the label of specifying the wavelength that uses successively from source node when the exchange that is included in the request from the source node to the destination node connects at light path; And wavelength of every use is just deleted this label; So remaining by inquiry number of tags can be inferred the distance of destination node.Therefore, in the present invention, also utilize remaining number of tags.

That is, the optical node device before the 3R destination node is taken over the 3R relaying that the 3R destination node should be carried out, so it is interval also can to shorten original 3R sometimes.Therefore, if carry out this taking over out of orderly, the 3R relay implementation number of times that carries out between then also can increasing sometimes from the source node to the destination node, this is undesirable.Therefore; In the present invention; Be conceived to the 3R relay capabilities, to jumping figure, the remaining number of tags of 3R destination node, they are provided with threshold value apply order, suppressed to carry out above-mentioned take over cause from the source node to the destination node between the increase of 3R relay implementation number of times.

One of judgement policy that use this moment is

T＞TH_T and (H＜TH_H and L＜TH_L).

That is, have in the optical node device of enough allowances in the 3R relay capabilities, be conceived to the 3R destination node jumping figure and to destination node apart from the two, when any is lower than threshold value, implement above-mentioned taking over.

Another is

T＞TH_T and (H＜TH_H or L＜TH_L).

Promptly; Same with the former, have in the optical node device of enough allowances in the 3R relay capabilities, be conceived to the 3R destination node jumping figure and to destination node apart from the two; If but even to the distance of destination node, but few to the jumping figure of 3R destination node, then implement above-mentioned taking over.

Compare both, then the former is only from implementing above-mentioned taking over from 3R destination node and the two near position of destination node.Therefore, from approaching above-mentioned the taking over of moment enforcement of destination node.If or be lower than threshold value to the jumping figure of 3R destination node, take over even then also implement above-mentioned 3R to the distance of destination node.Therefore, perhaps there is more optical node device to become and implements the above-mentioned object of taking over than the former.

The former is from approaching above-mentioned the taking over of moment enforcement of destination node, so the 3R between having from the source node to the destination node implements the possibility advantage lower than the latter that number of times increases.In addition, the latter can set on light path everywhere will implement the above-mentioned optical node device of taking over, and can implement the above-mentioned advantage of taking over expeditiously so have.Has different advantages respectively, so preferably come suitably to select the former or the latter according to the situation of light net.

In addition, destination node, preferably is judged as oneself and does not implement the 3R relaying when interval as the 3R of 3R destination node oneself belonging to.That is, suitable with destination node optical node device is the optical node device that need not to implement the 3R relaying.Therefore, need not this optical node device that need not to implement the 3R relaying is considered above-mentioned taking over.

Moreover, be under the situation in bi-directional light path at light path, on up light path, near source node be the 3R destination node, near destination node be the 3R source node, set the optical node device that will implement the 3R relaying.Therefore, the situation of the direction of the sign of inequality between remaining number of tags and the threshold value and descending light path is opposite.When actual set bi-directional light path, the two sets the optical node device that will implement the 3R relaying simultaneously to descending and up light path.

In the case, source node, preferably is judged as oneself and does not implement the 3R relaying when interval as the 3R of 3R destination node oneself belonging to.That is, suitable with source node optical node device is the optical node device that on up light path, need not to implement the 3R relaying.Therefore, need not this optical node device that need not to implement the 3R relaying is considered above-mentioned taking over.

The 8th viewpoint of the present invention is a kind of optical node device that connects light signal that exchanges, and comprising: detection part, and detection arrives the degradation mode of the light signal of oneself; Seeing parts off, is when detecting signal degradation in the testing result of this detection part, and the 3R relay request is passed out to and oneself the suitable adjacent light node device of previous dive; And the enforcement parts, when oneself having accepted to see the above-mentioned 3R relay request of parts off, the light signal that arrives oneself is implemented the 3R relaying from the adjacent light node device of next jumping above-mentioned.

In view of the above; Arrive the degradation mode of the light signal of this optical node device through actual detected; Discern the necessity of 3R relaying, ask the adjacent light node device suitable with previous dive to implement the 3R relaying, the optical node device starting of having accepted this request is as the function of carrying out the optical node device of 3R relaying.Thus, Yi Bian can or exchanging in the process that connects light signal in the process of setting light path, each optical node device survey, Yi Bian it is interval to set suitable 3R.

Perhaps, optical node device of the present invention comprises: detection part, and detection arrives the degradation mode of the light signal of oneself; With implement parts, be when detecting signal degradation in the testing result of this detection part, to arriving own light signal enforcement 3R relaying.

In view of the above, arrive the degradation mode of the light signal of this optical node device through actual detected, discern the necessity of 3R relaying, starting is as the function of carrying out the optical node device of 3R relaying.Thus, Yi Bian can or exchanging in the process that connects light signal in the process of setting light path, each optical node device survey, Yi Bian it is interval to set suitable 3R.

Perhaps; Optical node device exchange of the present invention connects light signal; Successively other optical node devices that the path from own to destination node comprises are set light path from the adjacent light node device hop-by-hop of next jumping; Wherein, comprising: see parts off, when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths, see test off and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And request parts; When accepting above-mentioned above-mentioned test of reporting the result that parts the receive impaired condition with light signal based on this and satisfy the impaired condition of regulation, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end are implemented the 3R relaying; Above-mentioned other optical node devices of being implemented this 3R relaying by request comprise: see parts off, see test off when other optical node devices that successively path to the above-mentioned purpose node comprised whenever the adjacent light node device hop-by-hop from next jumping are set light paths and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And request parts; When accepting above-mentioned above-mentioned test of reporting the result that parts the receive impaired condition with light signal based on this and satisfy the impaired condition of regulation, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end are implemented the 3R relaying.

In view of the above, actual set light path on one side, on one side decision to carry out the optical node device of 3R relaying, so need not to generate in advance the 3R block information, can save and generate the required processing burden of 3R block information.

Perhaps, optical node device of the present invention comprises: holding member keeps the value Q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; Transferring elements under the situation that oneself is source node, transmits by the initial value P of depreciation to the adjacent light node device of next jumping; Calculating unit, own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q); Implement parts, relatively the result of calculation of this calculating unit and threshold value under the situation greater than threshold value, pass to the adjacent light node device of next jumping with this result of calculation, and under the situation below the threshold value, the light signal that arrives oneself are implemented the 3R relaying; And transferring elements, oneself not when having transmitted this, with the own adjacent light node device that also will be passed to next jumping as the 3R source node by the initial value P of depreciation by the destination node of the light path of depreciation.

In view of the above; Pass to the initial value P of adjacent light node device under Q value that the amount of information that each optical node device keeps is just relevant with oneself and the situation that oneself is source node; Can enough few amount of information come independently to judge when setting light path oneself whether to need the 3R relaying, so can save required processing burdens such as generating or collect the 3R block information.Moreover, when setting light path, also need not to measure the degradation mode of light signal, can realize the high speed that light path is set.

The descending light path in unidirectional light path or the bi-directional light path has been imagined in the explanation of optical node device of the present invention so far.Then, the situation of having imagined the up light path in the bi-directional light path is described.

Optical node device of the present invention comprises: detection part, and detection arrives the degradation mode of the uplink optical signal of oneself; Seeing parts off, is when detecting signal degradation in the testing result of this detection part, sees the 3R relay request off to jumping suitable adjacent light node device with oneself next; And the enforcement parts, when the 3R relay implementation request of oneself having accepted from the adjacent light node device of previous dive, the light signal that arrives from up light path is implemented the 3R relaying.

Perhaps, optical node device of the present invention comprises: detection part, and detection arrives the degradation mode of the uplink optical signal of oneself; With implement parts, be when detecting signal degradation in the testing result of this detection part, to arriving own uplink optical signal enforcement 3R relaying.

Perhaps, optical node device of the present invention comprises: set parts, when oneself is source node, successively other optical node devices that the path to destination node comprises are set light path from the adjacent light node device hop-by-hop of next jumping; Comprise: see parts off, when oneself being not source node, after having set light path on oneself, seeing test off to up light path and use light signal; Comprise: the notice parts when oneself is source node, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal; Seeing above-mentioned test off comprises with the optical node device of light signal: implement parts, when satisfying the impaired condition of regulation based on the above-mentioned test of this notice with the impaired condition of light signal, to the light signal enforcement 3R relaying that arrives from up light path; Comprise: the notice parts; Oneself be in the time of on up light path, to implement the optical node device of 3R relaying; Successively other optical node devices that the path from own to destination node comprises are set light paths from the adjacent light node device hop-by-hop of next jumping, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the end of seeing off of this test with light signal.

In view of the above, actual set light path on one side, on one side decision to carry out the optical node device of 3R relaying, so need not to generate in advance the 3R block information, can save and generate the required processing burden of 3R block information.Process when the process during wherein, preferably with the descending light path of aforementioned setting is carried out this simultaneously and set up light path.

Perhaps, optical node device of the present invention comprises: holding member keeps the value q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; Transferring elements under the situation that oneself is source node, transmits by value added initial value p to the adjacent light node device of next jumping; Calculating unit, own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q); Implement parts; Relatively the result of calculation of this calculating unit and threshold value under the situation less than threshold value, pass to this result of calculation the adjacent light node device of next jumping; And under the situation more than the threshold value, the light signal that arrives oneself from up light path is implemented the 3R relaying; And transferring elements, oneself not when having transmitted this, with the own adjacent light node device that also will be passed to next jumping as the 3R destination node on the up light path by value added initial value p by the destination node of value added light path.

The 9th viewpoint of the present invention is a kind of light net, is made up of optical node device of the present invention.

The tenth viewpoint of the present invention is a kind of light path establishing method, successively the optical node device that the path from the source node to the destination node comprises is set light path from the adjacent light node device hop-by-hop as next jumping of the optical node device of source node.

Here; Light path establishing method of the present invention is carried out: first step; When the optical node device that successively path to the above-mentioned purpose node is comprised from the adjacent light node device hop-by-hop as next jumping of the optical node device of above-mentioned source node is set light path, use light signal from see test off as the optical node device of above-mentioned source node; Second step; When the optical node device that comprises to the path to the above-mentioned purpose node successively from the adjacent light node device hop-by-hop as next jumping of the optical node device of above-mentioned source node whenever this first step is seen test off and use light signal, as the optical node device acceptance of above-mentioned source node from receiving this test with this test of the optical node device of the distal-most end of light signal report with the impaired condition of light signal; And third step; When the above-mentioned above-mentioned test of reporting the result that receives based on this second step is satisfied the impaired condition of regulation with the impaired condition of light signal, as the optical node device request of the above-mentioned source node optical node device enforcement 3R relaying suitable with the previous dive of the optical node device of above-mentioned distal-most end; Implemented the above-mentioned optical node device of this 3R relaying carries out by request: the 4th step, and see test off when other optical node devices that successively path to the above-mentioned purpose node comprised whenever the adjacent light node device hop-by-hop from next jumping are set light paths and use light signal; The 5th step; When other optical node devices that comprise to the path to the above-mentioned purpose node successively from the adjacent light node device hop-by-hop of next jumping whenever the 4th step were seen test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And the 6th step; When the above-mentioned above-mentioned test of reporting the result that receives based on the 5th step was satisfied the impaired condition of regulation with the impaired condition of light signal, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end were implemented the 3R relaying.

Perhaps; The 11 viewpoint of the present invention is a kind of 3R relay implementation node establishing method that exchanges in the optical node device that connects light signal; Wherein, each optical node device keeps being the definite value Q of each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; The optical node device that is source node transmits by the initial value P of depreciation to the adjacent light node device of next jumping; Each optical node device own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q); Relatively this result of calculation and threshold value under the situation greater than threshold value, pass to the adjacent light node device of next jumping with this result of calculation, and under the situation below the threshold value, the light signal that arrives oneself are implemented the 3R relaying; Oneself not when having transmitted this, with the own adjacent light node device that also will be passed to next jumping as the 3R source node by the initial value P of depreciation by the destination node of the light path of depreciation.

The descending light path in unidirectional light path or the bi-directional light path has been imagined in the explanation of optical node establishing method of the present invention so far or 3R relay implementation node establishing method.Then, the situation of having imagined the up light path in the bi-directional light path is described.

Light path establishing method of the present invention is carried out: the 7th step oneself is that the optical node device of source node is set light path to other optical node devices that the path to destination node comprises successively from the adjacent light node device hop-by-hop of next jumping; The 8th step, the optical node device that is not source node is seen test off to up light path and is used light signal after having set light path on oneself; The 9th step oneself is that the optical node device of source node receives above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal; The tenth step, see off above-mentioned test with the optical node device of light signal when satisfying the impaired condition of regulation with the impaired condition of light signal based on the above-mentioned test of this notice, own the light signal that arrives from up light path is implemented the 3R relaying; The 11 step; The optical node device that oneself will on up light path, implement the 3R relaying is set light paths to other optical node devices that the path from own to destination node comprises successively from the adjacent light node device hop-by-hop of next jumping, receives above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal.

Perhaps; The 12 viewpoint of the present invention is a kind of 3R relay implementation node establishing method that exchanges in the optical node device that connects light signal; Wherein, each optical node device keeps being the definite value q of each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; The optical node device that is source node transmits by value added initial value p to the adjacent light node device of next jumping; Each optical node device own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q); Relatively this result of calculation and threshold value under the situation less than threshold value, pass to the adjacent light node device of next jumping with this result of calculation, and under the situation more than the threshold value, the light signal that arrives oneself from up light path are implemented the 3R relaying; Oneself not when having transmitted this, with the own adjacent light node device that also will be passed to next jumping as the 3R destination node on the up light path by value added initial value p by the destination node of value added light path.

Particularly, in above invention, when setting light path or when exchange connects light signal, each optical node device can independently be judged the necessity of implementing the 3R relaying one by one, carries out the 3R relaying, can constitute the light net simply.

The 13 viewpoint of the present invention is a kind of net control device, and management comprises that exchange connects a plurality of optical node devices and the light net that is connected the optical transmission line between these a plurality of optical node devices of light signal, wherein,

Comprise: the topology information holding member keeps the topology information of above-mentioned light net; Create parts, on above topology information, creates the optical node device of appointment estimated information as the 3R interval of 3R source node according to the jumping figure information of input; The change parts change the part of the interval estimated information of 3R on the above topology information that this establishments parts create or whole according to the indication of input; And the notice parts, the interval information of the 3R on the above topology information that these change parts were changed is notified to above-mentioned optical node device.

In view of the above, through the interval estimation jumping figure of input 3R, can promptly generate the interval estimated information of 3R roughly.Though be the interval estimated information of 3R roughly that generates like this, additional treatments such as also can survey, improve the reliability of 3R block information.Thus, compare, can promptly generate the 3R block information with the situation that all generates the 3R block information through actual measurement.

In addition; The 14 viewpoint of the present invention is a kind of service equipment; To net control device jumping figure information is provided; The management of this net control device comprises that exchange connects a plurality of optical node devices and the light net that is connected the optical transmission line between these a plurality of optical node devices of light signal, on topology information, creates the optical node device of the appointment estimated information as the 3R interval of 3R source node according to the above-mentioned jumping figure information of input; Wherein, above-mentioned jumping figure information is the interval jumping figure estimated value of 3R; Comprise: generate parts, generate this jumping figure estimated value; Holding member, the optical fiber kind of using with this light net and the information of wave band come together to keep the topology information of above-mentioned light net; And table, write down the relation between the deterioration degree of the average light signal in optical fiber kind and wave band and unit interval; Above-mentioned generation parts generate above-mentioned jumping figure estimated value with reference to the deterioration degree of the average light signal in the optical fiber kind that writes down in the information of optical fiber kind on the above topology information and wave band and the above-mentioned table and wave band and unit interval.

In view of the above, can obtain the interval estimation jumping figure of 3R accurately.That is, according to the combination of the optical fiber on the path, wavelength etc., there are very many physical links in route.The distance that just can transmit data without the 3R relaying changes according to this difference.For example, different according to the optic fibre characteristic of standard fiber and dispersion shifted optical fiber etc., transferable distance is also different.Therefore, under the situation of asking the interval estimation jumping figure of 3R,, can obtain the few estimated value of error through information with reference to these optical fiber kinds and wave band.

Perhaps, net control device of the present invention comprises: the topology information holding member keeps the topology information of above-mentioned light net; Create parts, on above topology information, creates the optical node device of appointment estimated information as the 3R interval of 3R source node according to the jumping figure information of input; Indicating device, indicate above-mentioned optical node device with above topology information that this establishment parts are created on the online interval of the corresponding above-mentioned light of the interval estimated information of 3R on set to test and use light path; Collecting part is collected the measured result that this indicating device makes the optical signal deterioration degree that above-mentioned test that above-mentioned optical node device sets causes with light path; Change parts, the measured result of the above-mentioned optical signal deterioration degree of collecting according to this collecting part change the part of the interval estimated information of 3R on the above topology information that above-mentioned establishment parts create or all; And the notice parts, the interval information of the 3R on the above topology information that these change parts were changed is notified to above-mentioned optical node device.

In view of the above, through the interval estimation jumping figure of input 3R, can promptly generate the interval estimated information of 3R that to survey.Through the pilot light node device the interval estimated information of the 3R of such generation is surveyed, can generate the 3R block information.Like this, before actual measurement, the estimated information that the 3R that generation should be surveyed is interval, thus can avoid actual measurement unnecessary or that repeat, so can generate the 3R block information expeditiously.

In addition; The present invention is a kind of optical node device; Test the measured result of the optical signal deterioration degree that causes with light path to the net control device notice; This net control device management comprises that exchange connects a plurality of optical node devices and the light net that is connected the optical transmission line between these a plurality of optical node devices of light signal; On topology information, creates the optical node device of appointment estimated information according to the jumping figure information of input as the 3R interval of 3R source node; Indicate above-mentioned optical node device with the above topology information of this establishment on the online interval of the corresponding above-mentioned light of the interval estimated information of 3R on this test of setting use light path; Collect the measured result of the optical signal deterioration degree that above-mentioned optical node device causes with light path according to the above-mentioned test of this indicative of settings; Change the part of the interval estimated information of 3R on the above topology information of above-mentioned establishment or all according to the measured result of this above-mentioned optical signal deterioration degree of collecting, the information in the interval of the 3R on the above topology information of this change is notified to above-mentioned optical node device.

Here, optical node device of the present invention comprises: set parts, and set the test of above-mentioned net control device indication and use light path; The actual measurement parts are surveyed the optical signal deterioration degree of the above-mentioned test of this set parts setting with light path; And the notice parts, the measured result of these actual measurement parts is notified to above-mentioned net control device.Thus, can realize the automatic collection of net control device to the 3R block information.

Perhaps, net control device of the present invention comprises: the topology information holding member keeps the topology information of above-mentioned light net; 3R block information holding member, the corresponding online 3R that sets of above-mentioned light that keeps with this topology information is interval; Collecting part is collected the traffic demand information in the above-mentioned light net; And the notice parts, the above-mentioned traffic demand information of collecting according to this collecting part in the interval that traffic demand has increased, with reference to the information of above-mentioned 3R block information holding member, is notified the interval that does not generate the 3R block information as yet to the guardian.

Perhaps, net control device of the present invention comprises: the topology information holding member keeps the topology information of above-mentioned light net; 3R block information holding member, the corresponding online 3R that sets of above-mentioned light that keeps with this topology information is interval; Collecting part is collected the traffic demand information in the above-mentioned light net; And the generation parts, the above-mentioned traffic demand information of collecting according to this collecting part, in the interval that traffic demand has increased, with reference to above-mentioned 3R block information holding member, the newly-generated 3R block information that does not generate the interval of 3R block information as yet.

In view of the above, can on the 3R block information of collecting at first, add new 3R block information automatically.Particularly can collect from the 3R block information in the interval that the moment traffic demand of collecting the 3R block information has at first increased.Thus, can collect useful 3R block information expeditiously.

Perhaps, optical node device of the present invention comprises: detection part, and detection arrives the degradation mode of the light signal of oneself; The notice parts are when detecting signal degradation in the testing result of this detection part, and to notify this optical node device be the 3R destination node and be the 3R source node in next 3R interval to the adjacent light node device suitable with oneself previous dive; Identification component when the notice of oneself having accepted from the above-mentioned notice parts of the adjacent light node device of next jumping, identifies and oneself is the 3R destination node and is the interval 3R source node of next 3R; And updating component, upgrade the 3R block information that oneself keeps according to this recognition result.

In view of the above; Arrive the degradation mode of the light signal of this optical node device through actual detected; Discern the necessity of 3R relaying; To the necessity of the adjacent light node device suitable with previous dive notice 3R relaying, the optical node device of having accepted this notice identifies oneself to be the 3R destination node and to be the 3R source node in next 3R interval.Like this, can generate the 3R block information according to this notice.Thus, Yi Bian each optical node device can be surveyed,, and then upgrade the 3R block information in the process of setting light path or in the process of exchange connection light signal Yi Bian it is interval to set suitable 3R.

Perhaps, optical node device of the present invention comprises: detection part, and detection arrives the degradation mode of the light signal of oneself; Identification component is when detecting signal degradation in the testing result of this detection part, identifies oneself to be the 3R destination node and to be the interval 3R source node of next 3R; And updating component, upgrade the 3R block information that oneself keeps according to this recognition result.

In view of the above, arrive the degradation mode of the light signal of this optical node device, discern the necessity of 3R relaying, identify and oneself be the 3R destination node and be the interval 3R source node of next 3R through actual detected.Like this, can generate the 3R block information according to testing result.Thus, Yi Bian each optical node device can be surveyed,, and then upgrade the 3R block information in the process of setting light path or in the process of exchange connection light signal Yi Bian it is interval to set suitable 3R.

In addition, best, comprising: the advertisement parts, give other optical node devices with the 3R block information advertisement that above-mentioned updating component was upgraded; And updating component, receive 3R block information from the above-mentioned advertisement and renewal oneself maintenance of other optical node devices.That is whether, can discern oneself through the light signal of actual measurement arrival oneself is 3R destination node or 3R source node, but this recognition result is the recognition result that has only this optical node device to know.Therefore, through giving other optical node devices, can come 3R block information shared synchronously, that effectively utilize above-mentioned updating component to upgrade by all optical node devices with this recognition result advertisement.

Perhaps, optical node device of the present invention exchange connects light signal, generates from own 3R block information to the path of destination node; Wherein, comprising: see parts off, when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths, see test off and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And notice parts; When accepting above-mentioned above-mentioned test of reporting the result that parts receive impaired condition based on this and satisfy the impaired condition of regulation, to notify these other optical node devices are 3R destination nodes and be the interval 3R source node of next 3R with other suitable optical node devices of previous dive of other optical node devices of above-mentioned distal-most end with light signal; Above-mentioned other optical node devices of having accepted this notice comprise: see parts off, when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths, see test off and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And notice parts; When accepting above-mentioned above-mentioned test of reporting the result that parts receive impaired condition based on this and satisfy the impaired condition of regulation, to notify these other optical node devices are 3R destination nodes and be the interval 3R source node of next 3R with other suitable optical node devices of previous dive of other optical node devices of above-mentioned distal-most end with light signal.

In view of the above, the actual set light path Yi Bian generate the 3R block information, so need not to generate in advance the 3R block information, can be saved and generate the required processing burden of 3R block information on one side.

Perhaps, optical node device of the present invention comprises: set parts, and other optical node devices that successively the tested link that will measure the 3R block information comprised from oneself the adjacent light node device hop-by-hop of next jumping are set test and are used light path; See parts off, see off to test when other optical node devices that successively above-mentioned tested link comprised from the adjacent light node device hop-by-hop of next jumping whenever this set parts are set test with light path and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to above-mentioned tested link from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And identification component; When accepting above-mentioned above-mentioned test of reporting the result that parts receive impaired condition based on this and satisfy the impaired condition of regulation, will be identified as with other suitable optical node devices of previous dive of other optical node devices of above-mentioned distal-most end and be the 3R destination node and be the interval 3R source node of next 3R with light signal.

In view of the above, can be through generating the 3R block information, so can generate high-precision 3R block information based on actual measurement with the same process of the situation of actual set light path.

In the case, best, comprising: holding member keeps the recognition result of above-mentioned identification component.In view of the above, can keep this optical node device to become source node and the 3R block information when setting light path.

Perhaps; Come together to keep the parts of the recognition result that comprises in this advertisement through comprising the recognition result advertisement of above-mentioned identification component given the parts of other optical node devices and receive from the advertisement of other optical node devices and with oneself recognition result, each optical node device can be shared the 3R block information from his generation.In view of the above; Be not limited to this optical node device and become the situation of source node; Also can keep other optical node devices to become the 3R block information under the situation of source node, so become under the situation of source node at other optical node devices, each optical node device can oneself judge whether to carry out the 3R relaying.Therefore, the optical node device that can save as source node carries out this processing burden of 3R relay request to the optical node device that will carry out the 3R relaying.

Perhaps, also can comprise: the notice parts, to management light net, keep the net control device of the interval information of 3R in this light net to notify the recognition result of above-mentioned identification component.

In view of the above, net control device can keep the 3R block information of overall optical net.Therefore; Optical node device can be where necessary to the net control device request and obtain the 3R block information; So need not in optical node device, to comprise jumbo memory devices such as database; And each optical node device need not the 3R block information to other many optical node device advertisements oneself generation, and a 3R block information that only oneself generates to the net control device notice gets final product, and can save the required processing burden of advertisement.

Net control device in the case comprises: updating component, accept from the 3R destination node of the optical node device that constitutes above-mentioned light net or the information of 3R source node, and upgrade the interval information of the above-mentioned 3R that is keeping.

Perhaps, optical node device of the present invention comprises: holding member keeps the value Q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; Transferring elements under the situation that oneself is source node, transmits by the initial value P of depreciation to the adjacent light node device of next jumping; Calculating unit, own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q); Identification component; The relatively result of calculation of this calculating unit and threshold value; Under situation greater than threshold value; This result of calculation is passed to the adjacent light node device of next jumping, and under the situation below the threshold value, identify oneself be with see off this by the optical node device of the initial value P of depreciation as the 3R destination node under the situation of 3R source node; And transferring elements, to identify oneself be the 3R destination node, be not when having transmitted this by the destination node of the light path of depreciation, with own as the 3R source node and will be passed to the adjacent light node device of next jumping by the initial value P of depreciation.

In view of the above, pass to the initial value P of adjacent light node device under Q value that the amount of information that each optical node device keeps is just relevant with oneself and the situation that oneself is source node, can enough few amount of information generate the 3R block information.In addition, can independently judge when setting light path oneself whether to need the 3R relaying, so can save required processing burden such as advertisement.Moreover, when setting light path, also need not to measure the degradation mode of light signal, can realize the high speed that light path is set.

Optical node device of the present invention comprises: detection part, the degradation mode of the light signal of the up light path of detection arrival oneself; The notice parts are when detecting signal degradation in the testing result of this detection part, to jumping suitable adjacent light node device to notify this optical node device be the 3R destination node on the up light path with own next and being the 3R source node in next 3R interval; Identification component when the notice of oneself having accepted from the above-mentioned notice parts of the adjacent light node device of previous dive, identifies and oneself is the 3R destination node on the up light path and is the interval 3R source node of next 3R; And updating component, upgrade the 3R block information that oneself keeps according to this recognition result.

Perhaps, optical node device of the present invention comprises: detection part, the degradation mode of the light signal of the up light path of detection arrival oneself; Identification component is when detecting signal degradation in the testing result of this detection part, identifies oneself to be the 3R destination node on the up light path and to be the interval 3R source node of next 3R; And updating component, upgrade the 3R block information that oneself keeps according to this recognition result.

In view of the above, under light path is two-way situation, on one side each optical node device can be in the process of setting light path or exchange connect in the process of light signal and survey, set suitable 3R interval on one side, and then renewal 3R block information.

Perhaps, optical node device of the present invention generates the 3R block information on the path from the source node to the destination node; Wherein, comprising: set parts, when oneself is source node, successively other optical node devices that the path to destination node comprises are set light path from the adjacent light node device hop-by-hop of next jumping; Comprise: see parts off, when oneself being not source node, after having set light path on oneself, seeing test off to up light path and use light signal; Comprise: the notice parts when oneself is source node, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal; Seeing above-mentioned test off comprises with the optical node device of light signal: identification component; When satisfying the impaired condition of regulation with the impaired condition of light signal, identify and oneself be the 3R source node on the up light path and be the interval 3R destination node of last 3R based on the above-mentioned test of this notice; Comprise: the notice parts; Be that to identify oneself be the 3R source node on the up light path and when being the optical node device of the interval 3R destination node of last 3R; Successively other optical node devices that the path from own to destination node comprises are set light paths from the adjacent light node device hop-by-hop of next jumping, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the end of seeing off of this test with light signal.

In view of the above, be under the situation in bi-directional light path at light path, the actual set light path Yi Bian generate the 3R block information, so need not to generate in advance the 3R block information, can be saved and generate the required processing burden of 3R block information on one side.

Perhaps; Optical node device of the present invention comprises: set parts; When oneself is source node, successively up light path is used in other optical node devices setting tests that the tested link that will measure the 3R block information comprises from the adjacent light node device hop-by-hop of next jumping; Being set this test comprises with the optical node device of up light path: see parts off, see test to this test off with up light path and use light signal; Comprise: the notice parts when oneself is source node, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal; Seeing above-mentioned test off comprises with the optical node device of light signal: identification component; When satisfying the impaired condition of regulation with the impaired condition of light signal, identify and oneself be the 3R source node on the up light path and be the interval 3R destination node of last 3R based on the above-mentioned test of this notice; Comprise: the notice parts; Be that to identify oneself be the 3R source node on the up light path and when being the optical node device of the interval 3R destination node of last 3R; Other optical node devices that successively the tested link that will measure the 3R block information comprised from the adjacent light node device hop-by-hop of next jumping are set test and use up light path, receive above-mentioned test and also will test with the report of the impaired condition of light signal with light signal and notify to the see end of this test with light signal.

In view of the above, be under the situation in bi-directional light path at light path, can be through generating the 3R block information, so can generate high-precision 3R block information based on actual measurement with the same process of the situation of actual set light path.

Perhaps; Come together to keep the parts of the recognition result that comprises in this advertisement through comprising the recognition result advertisement of above-mentioned identification component given the parts of other optical node devices and receive from the above-mentioned advertisement of other optical node devices and with oneself recognition result, each optical node device can be shared the 3R block information from his generation.In view of the above; Be not limited to this optical node device and become the situation of source node; Also can keep other optical node devices to become the 3R block information under the situation of source node, so become under the situation of source node at other optical node devices, each optical node device can oneself judge whether to carry out the 3R relaying.Therefore, the optical node device that can save as source node carries out this processing burden of 3R relay request to the optical node device that will carry out the 3R relaying.

Perhaps, optical node device of the present invention comprises: holding member keeps the value q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; Transferring elements under the situation that oneself is source node, transmits by value added initial value p to the adjacent light node device of next jumping; Calculating unit, own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q); Identification component; The relatively result of calculation of this calculating unit and threshold value; Under situation less than threshold value; This result of calculation is passed to the adjacent light node device of next jumping, and under the situation more than the threshold value, identify oneself be with see off this by the optical node device of value added initial value p as the 3R source node under the situation of the 3R destination node on the up light path; And transferring elements; Identify oneself be on the up light path the 3R source node, be not when having transmitted this by the destination node of value added light path, with own as the 3R destination node on the up light path and will be passed to the adjacent light node device of next jumping by value added initial value p.

The 15 viewpoint of the present invention is a kind of light net, comprises optical node device of the present invention or service equipment or net control device.

The 16 viewpoint of the present invention is a kind of 3R block information generation method, generates the 3R block information on the path from the source node to the destination node; Wherein, Carry out: first step; When the optical node device that successively path to the above-mentioned purpose node is comprised from the adjacent light node device hop-by-hop as next jumping of the optical node device of above-mentioned source node is set light path, use light signal from see test off as the optical node device of above-mentioned source node; Second step; When the optical node device that comprises to the path to the above-mentioned purpose node successively from the adjacent light node device hop-by-hop as next jumping of the optical node device of above-mentioned source node whenever this first step is seen test off and use light signal, as the optical node device acceptance of above-mentioned source node from receiving this test with this test of the optical node device of the distal-most end of light signal report with the impaired condition of light signal; And third step; When the above-mentioned above-mentioned test of reporting the result that receives based on this second step is satisfied the impaired condition of regulation with the impaired condition of light signal, as the optical node device of above-mentioned source node to notify this optical node device be the 3R destination node and be the interval 3R source node of next 3R with the suitable optical node device of previous dive of the optical node device of above-mentioned distal-most end; Having accepted the above-mentioned optical node device of this notice carries out: the 4th step, and when setting light path, the optical node device that successively path to the above-mentioned purpose node is comprised whenever the adjacent light node device hop-by-hop from next own jumping uses light signal from oneself seeing off to test; The 5th step; When the optical node device that comprises to the path to the above-mentioned purpose node successively from the adjacent light node device hop-by-hop of next jumping of oneself whenever the 4th step was seen test off and use light signal, oneself acceptance was from receiving this test with this test of the optical node device of the distal-most end of light signal report with the impaired condition of light signal; And the 6th step; When the above-mentioned above-mentioned test of reporting the result that receives based on the 5th step is satisfied the impaired condition of regulation with the impaired condition of light signal, own to notify this optical node device be the 3R destination node and be the interval 3R source node of next 3R with the suitable optical node device of previous dive of the optical node device of above-mentioned distal-most end.

Perhaps; 3R block information generation method of the present invention is carried out: the 7th step, and the optical node device that successively the tested link that will measure the 3R block information is comprised from the adjacent light node device hop-by-hop as next jumping of the optical node device of 3R source node is set test and is used light path; The 8th step is seen off to test when the optical node device that successively above-mentioned tested link is comprised from the adjacent light node device hop-by-hop as next jumping of the optical node device of above-mentioned 3R source node whenever the 7th step is set test with light path and is used light signal; The 9th step; When the optical node device that comprises to above-mentioned tested link successively from the adjacent light node device hop-by-hop as next jumping of the optical node device of above-mentioned 3R source node whenever the 8th step was seen test off and use light signal, acceptance was from receiving this test with this test of the optical node device of the distal-most end of light signal report with the impaired condition of light signal; And the tenth step; When the above-mentioned above-mentioned test of reporting the result that receives based on the 9th step is satisfied the impaired condition of regulation with the impaired condition of light signal, will be identified as the 3R destination node with the suitable optical node device of previous dive of the optical node device of above-mentioned distal-most end as the optical node device of above-mentioned 3R source node.

Perhaps, 3R block information generation method of the present invention is that each optical node device keeps being the definite value Q of each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; The optical node device that is source node transmits by the initial value P of depreciation to the adjacent light node device of next jumping; Each optical node device own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q); Relatively this result of calculation and threshold value; Under situation greater than threshold value; This result of calculation is passed to the adjacent light node device of next jumping; And under the situation below the threshold value, identify oneself be with see off this by the optical node device of the initial value P of depreciation as the 3R destination node under the situation of 3R source node; To identify oneself be the 3R destination node, be not when having transmitted this by the destination node of the light path of depreciation, with own as the 3R source node and will be passed to the adjacent light node device of next jumping by the initial value P of depreciation.

The descending light path in unidirectional light path or the bi-directional light path has been imagined in the explanation of 3R block information generation method of the present invention so far.Then, the situation of having imagined the up light path in the bi-directional light path is described.

3R block information generation method of the present invention is carried out: the 11 step oneself is that the optical node device of source node is set light path to other optical node devices that the path to destination node comprises successively from the adjacent light node device hop-by-hop of next jumping; The 12 step, the optical node device that is not source node is seen test off to up light path and is used light signal after having set light path on oneself; The 13 step oneself is that the optical node device of source node receives above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal; The 14 step; See off above-mentioned test with the optical node device of light signal when satisfying the impaired condition of regulation with the impaired condition of light signal based on the above-mentioned test of this notice, identify and oneself be the 3R source node on the up light path and be the interval 3R destination node of last 3R; The 15 step; Identify and oneself be the 3R source node on the up light path and be that the optical node device of the interval 3R destination node of last 3R is set light paths to other optical node devices that the path from own to destination node comprises successively from the adjacent light node device hop-by-hop of next jumping, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the end of seeing off of this test with light signal.

Perhaps; 3R block information generation method of the present invention is carried out: the 16 step is that the optical node device of source node is used up light path to other optical node devices setting tests that the tested link that will measure the 3R block information comprises successively from the adjacent light node device hop-by-hop of next jumping; The 17 step has been set this test and has seen test to this test with up light path with the optical node device of up light path and use light signal; The 18 step is that the optical node device of source node receives above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal; The 19 step; See off above-mentioned test with the optical node device of light signal when satisfying the impaired condition of regulation with the impaired condition of light signal based on the above-mentioned test of this notice, identify and oneself be the 3R source node on the up light path and be the interval 3R destination node of last 3R; The 20 step; Identify and oneself be the 3R source node on the up light path and be that other optical node devices that the optical node device of the interval 3R destination node of last 3R comprises the tested link that will measure the 3R block information from the adjacent light node device hop-by-hop of next jumping are successively set test and use up light path, receive above-mentioned test and also will test with the report of the impaired condition of light signal with light signal and notify to the end of seeing off of this test with light signal.

Perhaps, 3R block information generation method of the present invention is that each optical node device keeps being the definite value q of each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; The optical node device that is source node transmits by value added initial value p to the adjacent light node device of next jumping; Each optical node device own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q); Relatively this result of calculation and threshold value; Under situation less than threshold value; This result of calculation is passed to the adjacent light node device of next jumping; And under the situation more than the threshold value, identify oneself be with see off this by the optical node device of value added initial value p as the 3R source node under the situation of the 3R destination node on the up light path; Identify oneself be on the up light path the 3R source node, be not when having transmitted this by the destination node of value added light path, with own as the 3R destination node on the up light path and will be passed to the adjacent light node device of next jumping by value added initial value p.

As stated, according to the present invention, the 3R repeater of enough required minimum numbers of ability or required minimum ability effectively utilizes Internet resources, constitutes economic light net.

Description of drawings

Fig. 1 is the key diagram of the mark in 3R source node, 3R destination node, 3R interval.

Fig. 2 is the key diagram of the interval character of 3R.

Fig. 3 is the exemplary plot of the 3R block information corresponding with the topology information of light net.

Fig. 4 be the 1st, 3,5,6,12 to 16 embodiment optical node device want portion's frame assumption diagram.

Fig. 5 is light path and the interval figure of 3R that sets in the light net.

Fig. 6 is the frame assumption diagram of 3R relay implementation judging part.

Fig. 7 is the key diagram that 3R implements the work of simulation part.

The figure of the signaling procedure when Fig. 8 is the setting light path of the 1st embodiment.

Fig. 9 is light path and the interval figure of 3R that sets in the light net.

The figure of the signaling procedure when Figure 10 is the setting light path of the 1st embodiment.

Figure 11 be the 2nd embodiment optical node device want portion's frame assumption diagram.

The figure of the signaling procedure when Figure 12 is the setting light path of the 2nd embodiment.

The figure of the signaling procedure when Figure 13 is the setting light path of the 2nd embodiment.

Figure 14 is the figure of the 3R block information of the 3rd and the 4th embodiment.

Figure 15 is light path and the interval figure of 3R that sets in the light net.

The figure of the signaling procedure when Figure 16 is the setting light path of the 3rd embodiment.

The figure of the signaling procedure when Figure 17 is the setting light path of the 4th embodiment.

Figure 18 is light path and the interval figure of 3R that sets in the light net.

The figure of the signaling procedure when Figure 19 is the setting light path of the 3rd embodiment.

The figure of the signaling procedure when Figure 20 is the setting light path of the 4th embodiment.

Figure 21 is the figure of the 3R block information in the optical node device of the 5th embodiment.

Figure 22 is the figure of the 3R block information in the optical node device of the 5th embodiment.

The figure of the signaling procedure when Figure 23 is the setting light path of the 5th embodiment.

Figure 24 is the figure of the 3R block information in the optical node device of the 5th embodiment.

Figure 25 is the figure of the 3R block information in the optical node device of the 5th embodiment.

The figure of the signaling procedure when Figure 26 is the setting light path of the 5th embodiment.

Figure 27 is the figure of the 3R block information in the optical node device of the 6th embodiment.

Figure 28 is the figure of the 3R block information in the optical node device of the 6th embodiment.

Figure 29 is the figure of the 3R block information in the optical node device of the 6th embodiment.

Figure 30 is the figure of the 3R block information in the optical node device of the 6th embodiment.

The figure of the signaling procedure when Figure 31 is the setting light path of the 6th embodiment.

Figure 32 is the figure of the 3R block information in the optical node device of the 6th embodiment.

Figure 33 is the figure of the 3R block information in the optical node device of the 6th embodiment.

Figure 34 is the figure of the 3R block information in the optical node device of the 6th embodiment.

Figure 35 is the figure of the 3R block information in the optical node device of the 6th embodiment.

The figure of the signaling procedure when Figure 36 is the setting light path of the 6th embodiment.

Figure 37 is the net control device of the 7th and the 8th embodiment and the schematic diagram of the relation between the optical node device.

Figure 38 is the frame assumption diagram of the net control device of the 7th and the 8th embodiment.

Figure 39 be the 7th embodiment optical node device want portion's frame assumption diagram.

Figure 40 is the sequence chart of the work of the 7th embodiment.

Figure 41 be the 8th embodiment optical node device want portion's frame assumption diagram.

Figure 42 is the sequence chart of the work of the 8th embodiment.

Figure 43 be the 9th embodiment optical node device want portion's frame assumption diagram.

Figure 44 be the 10th embodiment optical node device want portion's frame assumption diagram.

Figure 45 be the 11st embodiment optical node device want portion's frame assumption diagram.

Figure 46 is the key diagram of the 3R relay implementation node determination methods of the 12nd embodiment.

Figure 47 is the key diagram of the 3R relay implementation node determination methods of the 13rd to the 16th embodiment.

Figure 48 is the key diagram of work of the optical node device of the 13rd and the 14th embodiment.

Figure 49 is the key diagram of work of the optical node device of the 15th and the 16th embodiment.

Figure 50 is the key diagram of wanting portion's frame structure and work of the optical node device of the 17th embodiment.

Figure 51 is the frame assumption diagram of actual measurement portion.

Figure 52 is the key diagram of wanting portion's frame structure and work of the optical node device of the 17th embodiment.

Figure 53 is the frame assumption diagram that the output of the 18th embodiment comprises the optical node device of optical switch portion.

Figure 54 is the frame assumption diagram that the input of the 18th embodiment comprises the optical node device of optical switch portion.

Figure 55 is the frame assumption diagram of the optical node device that comprises relaying line style 3R relay of the 18th embodiment.

Figure 56 is the schematic diagram that the 3R block information in the optical node device of the 19th embodiment is collected.

Figure 57 is the figure of the 3R block information collection process in the optical node device of the 19th embodiment.

Figure 58 is the schematic diagram that the 3R block information in the optical node device of the 19th embodiment is collected.

Figure 59 is the figure of the 3R block information collection process in the optical node device of the 19th embodiment.

Figure 60 is the schematic diagram that the 3R block information in the optical node device of the 20th, 29 embodiment is collected.

Figure 61 is the frame assumption diagram of the optical node device of the 20th, 29 embodiment.

Figure 62 is the schematic diagram that the 3R block information in the optical node device of the 20th, 29 embodiment is collected.

Figure 63 is the frame assumption diagram of the optical node device of the 20th, 29 embodiment.

Figure 64 is the net control device of the 21st embodiment and the graph of a relation between the light net.

Figure 65 is the frame assumption diagram of the net control device of the 21st embodiment.

Figure 66 is the frame assumption diagram of the service equipment of the 21st embodiment.

Figure 67 is the frame assumption diagram of the net control device of the 22nd embodiment.

Figure 68 is the key diagram of the basis of the 22nd embodiment optical node device of surveying from the indication of net control device.

Figure 69 is the frame assumption diagram of the net control device of the 22nd embodiment.

Figure 70 is the key diagram of the basis of the 22nd embodiment optical node device of surveying from the indication of net control device.

Figure 71 be the 23rd embodiment net control device want portion's frame assumption diagram.

Figure 72 is the key diagram of the traffic demand information gathering in the net control device of the 23rd and the 24th embodiment.

Figure 73 be the 24th embodiment net control device want the bilge construction block diagram.

Figure 74 is the key diagram of wanting portion's frame structure and work of the optical node device of the 25th embodiment.

Figure 75 is the key diagram of wanting portion's frame structure and work of the optical node device of the 25th embodiment.

Figure 76 is the frame assumption diagram that the output of the 26th embodiment comprises the optical node device of optical switch portion.

Figure 77 is the frame assumption diagram that the input of the 26th embodiment comprises the optical node device of optical switch portion.

Figure 78 is the frame assumption diagram of the optical node device that comprises relaying line style 3R relay of the 26th embodiment.

Figure 79 is the schematic diagram that the 3R block information in the optical node device of the 27th embodiment is collected.

Figure 80 is the figure of the 3R block information collection process in the optical node device of the 27th embodiment.

Figure 81 is the schematic diagram that the 3R block information in the optical node device of the 27th embodiment is collected.

Figure 82 is the figure of the 3R block information collection process in the optical node device of the 27th embodiment.

Figure 83 is the schematic diagram that the 3R block information in the optical node device of the 28th embodiment is collected.

Figure 84 is the figure of the 3R block information collection process in the optical node device of the 28th embodiment.

Figure 85 is the schematic diagram that the 3R block information in the optical node device of the 28th embodiment is collected.

Figure 86 is the figure of the 3R block information collection process in the optical node device of the 28th embodiment.

Figure 87 is existing smooth anastomose composition.

Embodiment

Below, with reference to accompanying drawing the preferred embodiments of the present invention are described.Wherein, the present invention is not limited to following each embodiment, member that for example also can these embodiment of appropriate combination.

Before the explanation various embodiments of the present invention, the mark of 3R interval, 3R source node, 3R destination node is described referring to figs. 1 through Fig. 3.Fig. 1 is the key diagram of the mark in 3R source node, 3R destination node, 3R interval.Fig. 2 is the key diagram of the interval character of 3R.Fig. 3 is the exemplary plot of the 3R block information corresponding with the topology information of light net.As shown in Figure 1, in various embodiments of the present invention, come mark 3R source node with real bullet, come mark 3R destination node with the shade round dot.

In addition, be that 3R is interval between the

optical node device

2 and 5, interval but all

optical node devices

2,3,4,5 that not necessarily comprise therebetween also are 3R each other.Its reason is because the light-emitting component that each optical node device has and the ability of photo detector are not necessarily identical.

Promptly; Need not under the situation of 3R relaying in the photo detector reception of the optical signals optical node device of launching from the light-emitting component of optical node device 25 and on the way; If for example the light-emitting component of optical node device 3 is compared with the light-emitting component of optical node device 2 and can only be exported half the following light signal strength, then may not become the 3R interval between the optical node device 3 and 5.Perhaps, if the photo detector of optical node device 4 is compared the luminous sensitivity that receives that only has below half with the photo detector of optical node device 5, then may not become the 3R interval between the optical node device 2 and 4.In addition, to optical node device 5 as the 3R source node, with the interval of optical node device 2 as the 3R destination node, upstream and downstream also may not adopt identical light-emitting component or photo detector, light signal strength or receive luminous sensitivity different may not become the 3R interval sometimes.Therefore, as shown in Figure 2, the interval mark of 3R also repeats with a part of or whole of other 3R intervals sometimes.

The 3R block information of setting like this is as shown in Figure 3, correspondingly with the topology information of light net comes mark.In the example of Fig. 3,, specified

optical node device

1,3,11,13 as the 3R source node.The appointment of this 3R source node is undertaken by the manager of light net, and the source node of the light path that for example traffic demand is many is designated as the 3R source node.

Wherein, the interval 3R interval of obviously plaing a part that 1 between adjacent optical node device jumped, still in the present invention, with being set at the 3R interval between preassigned 3R source node and the 3R destination node.In addition, when between the optical node device that does not preestablish the 3R interval, setting light path, also need the interim 3R of setting interval sometimes, in this case, judgement policy according to the rules comes the interim 3R of setting interval.In this case, interval as explicit 3R, it is interval that hop-by-hop is set 3R.

In addition; If can link source node and destination node by enough same wavelength; Then need not wavelength conversion; Can utilize the wavelength conversion resource most effectively, but, decide the optical node device that will carry out wavelength conversion so can only set request wavelength idle condition constantly according to light path because the behaviour in service of wavelength comes to change at any time according to the wavelength behaviour in service of overall optical net.But, under the situation of knowing the optical node device that must carry out wavelength conversion in advance, can be with this optical node device as the 3R source node.What is called is known the situation that must carry out the optical node device of wavelength conversion in advance; For example be situation such as following: the content of the wavelength conversion resource that certain optical node device has is different with the content of the wavelength conversion resource that the optical node device of previous dive has, and on hardware, can not set light path with same wavelength.

(the 1st embodiment)

The optical node device of the 1st embodiment is described with reference to Fig. 3 to Figure 10.Fig. 4 be the 1st embodiment optical node device want portion's frame assumption diagram.Fig. 5 and Fig. 9 are light path and the interval figure of 3R that sets in the light net.Fig. 6 is the frame assumption diagram of 3R relay implementation judging part 21.Fig. 7 is the key diagram that 3R implements the work of simulation part.The figure of the signaling procedure when Fig. 8 and Figure 10 are the setting light paths of the 1st embodiment.

The optical node device of the 1st embodiment is characterised in that, and is as shown in Figure 4, comprising: 3R block information maintaining part 20 keeps the corresponding 3R block information of topology information of the light net under shown in Figure 3 and own; With 3R relay implementation judging part 21,, when setting, judge independently whether oneself is the optical node device that will implement the 3R relaying via oneself light path with reference to the 3R block information that keeps in this 3R block information maintaining part 20.

In the 1st embodiment, each optical node device judges independently whether oneself is 3R relay implementation node, so each optical node device need keep the 3R block information respectively.But, need not to convey the irrelevant optical node device of light path setting and also keep the 3R block information, so, then can effectively utilize the information stores resource if make to have only the optical node device of setting on the relevant path with light path to keep the 3R block information.

The work of the optical node device of the 1st embodiment then, is described.Here, as shown in Figure 5, the example of setting from the light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of optical node device 1 is in order to know that optical node device 1 is which part of the topology of light net, with reference to 3R block information maintaining part 20.Consequently, identify optical node device 1 and be the source node of the light path that will set, be judged as optical node device 1 and will implement the 3R relaying.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; As shown in Figure 8; When seeing light path setting request (Path) off to optical node device 2; With expression optical node device 1 is that this message of DITR (Downstream Ingress Three R, downstream ingress 3R)=1 of 3R source node is carried at light path and set in the request.

Accepted to ask from the light path setting of optical node device 1 whether the light path configuration part 22 of the optical node device 2 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 2.The 3R relay implementation judging part 21 of optical node device 2 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 2 is not the 3R source node; And sent DITR=1 from optical node device 1; If optical node device 1 is the 3R source node, be that 3R is interval then to optical node device 4, do not implement the 3R relaying so be judged as optical node device 2.

The light path configuration part 22 of optical node device 2 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that light path is set; As shown in Figure 8; When seeing light path setting request (Path) off to optical node device 3; Because optical node device 2 is not implemented the 3R relaying, set in the request so will intactly carry from the DITR=1 of optical node device 1 at light path.

Accepted to ask from the light path setting of optical node device 2 whether the light path configuration part 22 of the optical node device 3 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 3.The 3R relay implementation judging part 21 of optical node device 3 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; So the 3R source node that identifies optical node device 3 and be from the 3R interval of optical node device 3 to 14 can be implemented the 3R relaying, so on 4 3R interval, be not that the 3R source node also can not implemented to make light signal intactly be transmitted to the 3R destination node the 3R then perhaps from optical node device 1 to optical node device--optical node device 4.

In this case; 3R relay implementation judging part 21 usefulness of optical node device 3 3R shown in Figure 6 implements simulation part 23 and comparison portion 24; To light path from optical node device 3 to 14, relatively optical node device 3 play the situation of 3R source node with the situation both of these case that does not play the 3R source node under 3R enforcement number of times.That is, it is as shown in Figure 7 that 3R implements simulation part 23, and optical node device 3 has been implemented the situation and the unenforced situation of 3R relaying, sets the 3R interval respectively.Under situation about having implemented, as shown in Figure 7, existing oneself is 3R source node, destination node--optical node device 14 is the 3R block information of 3R destination node, so set 1 3R interval.Therefore, 3R enforcement number of times is 1 time.

Do not implement at optical node device 3 under the situation of 3R relaying, optical node device 4 is the 3R destination node.Here, 3R implements the judgement of the 3R relay implementation judging part 21 of simulation part 23 simulated light node devices 4.The judgement policy of the 3R relay implementation judging part 21 of optical node device 4 is; " oneself be the optical node device suitable with the 3R destination node, when being not destination node, being judged as is will be with own as the 3R source node, with the optical node device of next jumping optical node device as 3R destination node, own enforcement 3R relaying ".

Promptly simulated " oneself being the optical node device suitable with the 3R destination node; be not destination node, is will be with own as the 3R source node, with the optical node device 5 of next jumping optical node device as 3R destination node, own enforcement 3R relaying so the 3R relay implementation judging part 21 of optical node device 4 is judged as ".Therefore, if optical node device 4 becomes the 3R destination node, then being judged as will be with optical node device 4 as the 3R source node, implements the 3R relayings with the optical node device 5 of next jumping as 3R destination node, optical node device 4.

Then, 3R implements the judgement of the 3R relay implementation judging part 21 of simulation part 23 simulated light node devices 5.The judgement policy of the 3R relay implementation judging part 21 of optical node device 5 is; " oneself do not belonging to any 3R that on light path, has the 3R source node when interval via oneself, be judged as be will with own as the 3R source node, will oneself the optical node device of next jumping as the optical node device of 3R destination node, oneself enforcement 3R relaying ".

Promptly simulated " oneself do not belong to interval via any 3R on the light path of oneself with 3R source node, thus the 3R relay implementation judging part 21 of optical node device 5 be judged as be will with own as the 3R source node, will oneself the optical node device 14 of next jumping as the optical node device of 3R destination node, oneself enforcement 3R relaying ".Therefore, knowing will be with optical node device 5 as the 3R source node, carries out the 3R relayings with the optical node device 14 of next jumping of optical node device 5 as 3R destination node, optical node device 5.Therefore, 3R enforcement number of times is 2 times.

The analog result that this 3R implements simulation part 23 is imported into comparison portion 24.Comparison portion 24 knows that optical node device 3 implements the 3R relayings and compare with the situation of not implementing the 3R relaying and can reduce 3R and implement number of times, exports as comparative result so should look like.It is that 3R implements the few side of number of times that 3R relay implementation judging part 21 is selected comparative result.Therefore, be judged as optical node device 3 and will implement the 3R relaying.

Wherein, When following situation, carry out this simulation in principle: to interval via a plurality of different 3R that comprises repeating part on the light path of an optical node device; This optical node device is the 3R source node on some 3R interval, on other 3R intervals, does not serve as 3R source node or 3R destination node.This in other embodiments too.

The light path configuration part 22 of optical node device 3 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; As shown in Figure 8; When seeing light path to optical node device 4 off and set request (Path), be that this message of DITR=3 of 3R source node is carried at light path and set in the request with expression optical node device 3.

Accepted to ask from the light path setting of optical node device 3 whether the light path configuration part 22 of the optical node device 4 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 4.The 3R relay implementation judging part 21 of optical node device 4 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 4 is 3R destination nodes; And sent DITR=3 from optical node device 3; If optical node device 3 is the 3R source node, be that 3R is interval then to optical node device 14, need not to implement the 3R relaying so be judged as optical node device 4.

The light path configuration part 22 of optical node device 4 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that light path is set; As shown in Figure 8; When seeing light path setting request (Path) off to optical node device 5; Because optical node device 4 is not implemented the 3R relaying, set in the request so will intactly carry from the DITR=3 of optical node device 3 at light path.

Accepted to ask from the light path setting of optical node device 4 whether the light path configuration part 22 of the optical node device 5 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 5.The 3R relay implementation judging part 21 of optical node device 5 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 5 is not the 3R source node; And sent DITR=3 from optical node device 4; If optical node device 3 is the 3R source node, be that 3R is interval then to optical node device 14, need not to implement the 3R relaying so be judged as optical node device 5.

The light path configuration part 22 of optical node device 5 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that light path is set; As shown in Figure 8; When seeing light path setting request (Path) off to optical node device 14; Because optical node device 5 is not implemented the 3R relaying, set in the request so will intactly carry from the DITR=3 of optical node device 4 at light path.

Accepted to ask from the light path setting of optical node device 5 whether the light path configuration part 22 of the optical node device 14 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 14.The 3R relay implementation judging part 21 of optical node device 14 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20, and optical node device 14 is destination nodes, need not to implement the 3R relaying so be judged as.

The light path configuration part 22 of optical node device 14 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of path setting, and is as shown in Figure 8, sees light path off to optical node device 5 and sets completion notice (Resv).

This light path is set to accomplish and is notified (Resv) to transmit by optical node device 5 → 4 → 3 → 2 → 1, accomplishes the setting of light path.Like this, each

optical node device

1,2,3,4,5,14 can judge independently whether oneself will implement the 3R relaying in the middle of the signaling procedure of carrying out the light path setting.

Another example of work of the optical node device of the 1st embodiment then, is described.Here, as shown in Figure 9, the example of setting from the light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of optical node device 1 is in order to know that optical node device 1 is which part of the topology of light net, with reference to 3R block information maintaining part 20.Consequently, identify optical node device 1 and be the source node of the light path that will set, be judged as optical node device 1 and will implement the 3R relaying.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 10; When seeing light path to optical node device 10 off and set request (Path), be that this message of DITR=1 of 3R source node is carried at light path and set in the request with expression optical node device 1.

Accepted to ask from the light path setting of optical node device 1 whether the light path configuration part 22 of the optical node device 10 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 10.The 3R relay implementation judging part 21 of optical node device 10 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 10 is not the 3R source node; And sent DITR=1 from optical node device 1; If optical node device 1 is the 3R source node, be that 3R is interval then to optical node device 11, do not implement the 3R relaying so be judged as optical node device 10.

The light path configuration part 22 of optical node device 10 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that light path is set; Shown in figure 10; When seeing light path setting request (Path) off to optical node device 11; Because optical node device 10 is not implemented the 3R relaying, set in the request so will intactly carry from the DITR=1 of optical node device 1 at light path.

Accepted to ask from the light path setting of optical node device 10 whether the light path configuration part 22 of the optical node device 11 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 11.The 3R relay implementation judging part 21 of optical node device 11 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20, and optical node device 11 is the 3R source nodes from the 3R interval of optical node device 11 to 13, will implement the 3R relaying so be judged as.

The light path configuration part 22 of optical node device 11 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 10; When seeing light path to optical node device 12 off and set request (Path), be that this message of DITR=11 of 3R source node is carried at light path and set in the request with expression optical node device 11.

Accepted to ask from the light path setting of optical node device 11 whether the light path configuration part 22 of the optical node device 12 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 12.The 3R relay implementation judging part 21 of optical node device 12 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20, and optical node device 12 is judged as and need not to implement the 3R relaying neither the 3R source node neither the 3R destination node.

The light path configuration part 22 of optical node device 12 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that light path is set; Shown in figure 10; When seeing light path setting request (Path) off to optical node device 13; Because optical node device 12 is not implemented the 3R relaying, set in the request so will intactly carry from the DITR=11 of optical node device 11 at light path.

Accepted to ask from the light path setting of optical node device 12 whether the light path configuration part 22 of the optical node device 13 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 13.The 3R relay implementation judging part 21 of optical node device 13 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20, and optical node device 13 is 3R source nodes, is judged as to implement the 3R relaying.

The light path configuration part 22 of optical node device 13 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 10; When seeing light path setting request (Path) off to optical node device 14; Because optical node device 13 will be implemented the 3R relaying, so DITR=13 is carried in light path setting request.

Accepted to ask from the light path setting of optical node device 13 whether the light path configuration part 22 of the optical node device 14 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 14.The 3R relay implementation judging part 21 of optical node device 14 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20, and optical node device 14 is destination nodes, need not to implement the 3R relaying so be judged as.

The light path configuration part 22 of optical node device 14 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of path setting, and is shown in figure 10, sees light path off to optical node device 13 and sets completion notice (Resv).

This light path is set to accomplish and is notified (Resv) to transmit by optical node device 13 → 12 → 11 → 10 → 1, accomplishes the setting of light path.Like this, each

optical node device

1,10,11,12,13,14 can judge independently whether oneself will implement the 3R relaying in the middle of the signaling procedure of carrying out the light path setting.

(the 2nd embodiment)

The optical node device of the present invention the 2nd embodiment is described with reference to Fig. 3, Fig. 5, Fig. 6, Fig. 9, Figure 11, Figure 12, Figure 13.Figure 11 be the 2nd embodiment optical node device want portion's frame assumption diagram.The figure of the signaling procedure when Figure 12 and Figure 13 are the setting light paths of the 2nd embodiment.

The optical node device of the 2nd embodiment is characterised in that, comprising: 3R block information maintaining part 20 keeps the corresponding 3R block information of topology information with oneself affiliated light net; 3R relay implementation node particular portion 25; With reference to the 3R block information that keeps in this 3R block information maintaining part 20; When oneself is source node, the light path from own to destination node via other optical node devices specific other optical node devices that will implement the 3R relaying; And 3R relay implementation request section 26, ask specific other optical node devices that go out of this 3R relay implementation node particular portion 25 to oneself being that the light path of source node is implemented the 3R relaying.

In the 2nd embodiment; The optical node device specific 3R relay implementation node suitable with source node; So the optical node device suitable with source node keeps the 3R block information to get final product; Need not as the 1st embodiment, all optical node devices or a plurality of optical node devices relevant with the light path setting keep the 3R block informations.Therefore, if make to have only the optical node device suitable to keep the 3R block information, then can effectively utilize the information stores resource with source node.

The work of the optical node device of the 2nd embodiment then, is described.In 3R block information maintaining part 20, keeping 3R block information shown in Figure 3.The light path configuration part 22 of optical node device 1 is about to optical node device 1 as source node, optical node device 14 is set the light path (two-wire part) from optical node device 1 to 14 as destination node, trial as shown in Figure 5.The optical node device that will implement the 3R relaying beyond 25 specific optical node devices of light path configuration part 22 request 3R relay implementation node particular portion 1.

Here, the 3R relay implementation node particular portion 25 specific algorithms that will implement the optical node device of 3R relaying are described.For optical node device 2, owing to be not the 3R source node, and optical node device 1 will implement the 3R relaying, do not implement the 3R relaying so be judged as optical node device 2.For optical node device 3; Owing to be so that 3R source node from the 3R interval of optical node device 3 to 14 can be implemented the 3R relaying, so perhaps owing on 4 3R interval, be not that the 3R source node also can not implemented to make light signal intactly be transmitted to the 3R destination node the 3R then from optical node device 1 to optical node device--optical node device 4.

In this case; 3R relay implementation node particular portion 25 usefulness 3R shown in Figure 6 implements simulation part 23 and comparison portion 24; To light path from optical node device 3 to 14, relatively optical node device 3 play the situation of 3R source node with the situation both of these case that does not play the 3R source node under 3R enforcement number of times.Below explanation is identical with the 1st embodiment.

The analog result that this 3R implements simulation part 23 is imported into comparison portion 24.Comparison portion 24 knows that optical node device 3 implements the 3R relayings and compare with the situation of not implementing the 3R relaying and can reduce 3R and implement number of times, exports as comparative result so should look like.It is that 3R implements the few side of number of times that 3R relay implementation node particular portion 25 is selected comparative result.Therefore, be judged as optical node device 3 and will implement the 3R relaying.

For optical node device 4,, do not implement the 3R relaying so be judged as owing to be the 3R destination node.In addition, for optical node device 5,, do not implement the 3R relaying so be judged as owing to be not the 3R source node.In addition, for optical node device 14,, do not implement the 3R relaying so be judged as owing to be destination node.

Like this, the specific optical node device that will implement the 3R relaying from the light path of optical node device 1 to 14 of source node--optical node device 1.And then, optical node device 1 from 3R relay implementation request section 26 to the own specific optical node device that will the implement the 3R relaying 3 output ETR (Explicit Three R, explicit 3R)=3 that go out as the request of 3R relay implementation.

Be able to specific go out will implement the optical node device of 3R relaying after, shown in figure 12, the light path configuration part of optical node device 1 22 is carried out and is used for the signaling procedure that light path is set.That is, optical node device 1 is preserved for the resource of light path setting and 3R relaying, sees light path off to optical node device 2 and sets request (Path).At this moment, in light path setting request, carry ETR=3.

The optical node device of having accepted to set request (Path) from the light path of optical node device 12 is with reference to ETR=3; Identifying oneself is not the optical node device that will implement the 3R relaying; Be preserved for the resource that light path is set, see light path off to optical node device 3 and set request (Path).At this moment, intactly carry the ETR=3 that sends from optical node device 1.

The optical node device of having accepted to set request (Path) from the light path of optical node device 23 is with reference to ETR=3; Identifying oneself is the optical node device that will implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 4 and set request (Path).At this moment, to implement to delete ETR=3 behind the 3R relaying identifying optical node device 3, so do not pass to after the optical node device 3.

Accepted to set the optical node device 4 of asking (Path) and be preserved for the resource that light path is set, seen light path off to optical node device 5 and set request (Path) from the light path of optical node device 3.Accepted to set the optical node device 5 of asking (Path) and be preserved for the resource that light path is set, seen light path off to optical node device 14 and set request (Path) from the light path of optical node device 4.Accepted to set the optical node device 14 of asking (Path) and be preserved for the resource that light path is set, seen light path off to optical node device 5 and set completion notice (Resv) from the light path of optical node device 5.Light path is set to accomplish and is notified (Resv) to transmit by optical node device 5 → 4 → 3 → 2 → 1, accomplishes light path and sets.

Another example of work of the optical node device of the 2nd embodiment then, is described.With reference to Fig. 9 and Figure 13 the example under the situation of implementing 2 3R relayings on the light path between source node and the destination node is described.In 3R block information maintaining part 20, keeping 3R block information shown in Figure 3.The light path configuration part 22 of optical node device 1 is about to optical node device 1 as source node, optical node device 14 is set the light path (two-wire part) from optical node device 1 to 14 as destination node, trial as shown in Figure 9.The optical node device that will implement the 3R relaying beyond 25 specific optical node devices of light path configuration part 22 request 3R relay implementation node particular portion 1.

Here, the 3R relay implementation node particular portion 25 specific algorithms that will implement the optical node device of 3R relaying are described.For optical node device 10, owing to be not the 3R source node, and optical node device 1 will implement the 3R relaying, do not implement the 3R relaying so be judged as optical node device 10.For optical node device 11,, to implement the 3R relaying so be judged as owing to be the 3R source node from the 3R interval of optical node device 11 to 13.For optical node device 12,, do not implement the 3R relaying so be judged as owing to be not the 3R source node.For optical node device 13,, to implement the 3R relaying so be judged as owing to be the 3R source node from the 3R interval of optical node device 13 to 14.For optical node device 14,, do not implement the 3R relaying so be judged as owing to be destination node.

Like this, the specific optical node device that will implement the 3R relaying from the light path of optical node device 1 to 14 of source node--optical node device 1.And then to the own specific optical node device that will the implement the 3R relaying 3 output ETR=11 that go out, 13 as the request of 3R relay implementation from 3R relay implementation request section 26 for optical node device 1.

Be able to specific go out will implement the optical node device of 3R relaying after, shown in figure 13, the light path configuration part of optical node device 1 22 is carried out and is used for the signaling procedure that light path is set.That is, optical node device 1 is preserved for the resource of light path setting and 3R relaying, sees light path off to optical node device 10 and sets request (Path).At this moment, in light path setting request, carry ETR=11,13.

The optical node device of having accepted to set request (Path) from the light path of optical node device 1 10 is with reference to ETR=11; 13; Identifying oneself is not the optical node device that will implement the 3R relaying, is preserved for the resource that light path is set, and sees light path off to optical node device 11 and sets request (Path).At this moment, intactly carry the ETR=11 that sends from

optical node device

1,13.

The optical node device of having accepted to set request (Path) from the light path of optical node device 10 11 is with reference to ETR=11; 13; Identifying oneself is the optical node device that will implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 12 and set request (Path).At this moment, to implement to delete ETR=11 behind the 3R relaying identifying optical node device 11, carry ETR=13 so set in the request at light path.

The optical node device of having accepted to set request (Path) from the light path of optical node device 11 12 is with reference to ETR=13; Identifying oneself is not the optical node device that will implement the 3R relaying; Be preserved for the resource that light path is set, see light path off to optical node device 13 and set request (Path).At this moment, intactly carry the ETR=13 that sends from optical node device 11.

The optical node device of having accepted to set request (Path) from the light path of optical node device 12 13 is with reference to ETR=13; Identifying oneself is the optical node device that will implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 14 and set request (Path).At this moment, to implement to delete ETR=13 behind the 3R relaying identifying optical node device 13, so do not pass to optical node device 14.

Accepted to set the optical node device 14 of asking (Path) and be preserved for the resource that light path is set, seen light path off to optical node device 13 and set completion notice (Resv) from the light path of optical node device 13.Light path is set to accomplish and is notified (Resv) to transmit by optical node device 13 → 12 → 11 → 10 → 1, accomplishes light path and sets.

Like this, at the specific optical node device that will implement the 3R relaying to the light path of destination node,, can alleviate computation burden as the optical node device of source node so the indication that other optical node devices on this light path are only deferred to from source node gets final product.In addition, the 3R block information can be do not kept, the information stores resource can be effectively utilized as the optical node device beyond the optical node device of source node.

(the 3rd embodiment)

The optical node device of the 3rd embodiment is described with reference to Fig. 4, Figure 14, Figure 15, Figure 16, Figure 18, Figure 19.Figure 14 is the figure of the 3R block information of the 3rd embodiment.Figure 15, Figure 18 are light path and the interval figure of 3R that sets in the light net.The figure of the signaling procedure when Figure 16, Figure 19 are the setting light paths of the 3rd embodiment.

The example of the optical node device that will implement the 3R relaying is set in the 3rd embodiment explanation on both during all in signaling at the up light path in bi-directional light path and descending light path.The optical node device of the 3rd embodiment is described with structure shown in Figure 4.In structure shown in Figure 4, each optical node device keeps same 3R block information and judges independently whether oneself will implement the 3R relaying.In 3R block information maintaining part 20, keeping 3R block information shown in Figure 14.

In the 3rd embodiment, same with the 1st embodiment, each optical node device judges independently whether oneself is 3R relay implementation node, so each optical node device need keep the 3R block information respectively.But, need not to convey the irrelevant optical node device of light path setting and also keep the 3R block information, so, then can effectively utilize the information stores resource if make to have only the optical node device of setting on the relevant path with light path to keep the 3R block information.

The work of the optical node device of the 3rd embodiment then, is described.Here, shown in figure 15, the example of setting from the bi-directional light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of optical node device 1 is in order to know that optical node device 1 is which part of the topology of light net, with reference to 3R block information maintaining part 20.Consequently, identify optical node device 1 and be the source node in the bi-directional light path that will set, and be the 3R source node of descending light path, be judged as optical node device 1 and will on descending light path, implement the 3R relaying.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of descending light path setting and 3R relaying; Shown in figure 16; When seeing light path setting request (Path) off to optical node device 2, be to carry in light path setting request in this message of the DITR=1 of the optical node device of implementing the 3R relaying on the descending light path with expression optical node device 1.

Moreover 3R relay implementation judging part 21 is with reference to 3R block information maintaining part 20, identifies optical node device 1 and be the 3R destination node of the up light path that will set, is judged as optical node device 1 and on up light path, do not implement the 3R relaying.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that up light path is set; Shown in figure 16; When seeing light path setting request (Path) off to optical node device 2; With expression optical node device 1 is that this message of UETR (Upstream Egress Three R, up outlet 3R)=1 of the 3R destination node on the up light path is carried at light path and set in the request.

Accepted to ask from the light path setting of optical node device 1 whether the light path configuration part 22 of the optical node device 2 of (Path) is the optical node devices that will on the upstream or downstream light path, implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 2.The 3R relay implementation judging part 21 of optical node device 2 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 2 is not the 3R source node on the upstream or downstream light path; And sent DITR=1 from optical node device 1; If optical node device 1 is the 3R source node on descending light path, be that 3R is interval then to optical node device 4, do not implement the 3R relaying so be judged as optical node device 2.In addition; Sent UETR=1 from optical node device 1; Optical node device 1 is the 3R destination node on up light path; According to the 3R block information, know that optical node device 4 is with the 3R source node of optical node device 1 as the 3R destination node, does not implement the 3R relaying so be judged as optical node device 2 yet on up light path.

The light path configuration part 22 of optical node device 2 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that descending and up light path is set; Shown in figure 16; When seeing light path setting request (Path) off to optical node device 3; Because optical node device 2 is not implemented the 3R relaying, set in the request so will intactly carry from DITR=1, the UETR=1 of optical node device 1 at light path.

Accepted to ask from the light path setting of optical node device 2 whether the light path configuration part 22 of the optical node device 3 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 3.The 3R relay implementation judging part 21 of optical node device 3 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Identify optical node device 3 owing to be so that 3R source node from the 3R interval of optical node device 3 to 14 can be implemented the 3R relaying on the descending light path, so perhaps owing on 4 3R interval, be not that the 3R source node also can not implemented to make light signal intactly be transmitted to the 3R destination node the 3R then on the descending light path from optical node device 1 to optical node device--optical node device 4.

In this case; The 3R relay implementation judging part 21 usefulness 3R of optical node device 3 implement simulation part 23 and comparison portion 24; To light path from optical node device 3 to 14, relatively optical node device 3 play the situation of 3R source node with the situation both of these case that does not play the 3R source node under 3R enforcement number of times.Below explanation is identical with the 1st embodiment.

The analog result that this 3R implements simulation part 23 is imported into comparison portion 24.Comparison portion 24 knows that optical node device 3 implements the 3R relaying and compare with the situation of not implementing the 3R relaying and can reduce 3R and implement number of times on descending light path, exports as comparative result so should look like.It is that 3R implements the few side of number of times that 3R relay implementation judging part 21 is selected comparative result.Therefore, be judged as optical node device 3 and will on descending light path, implement the 3R relaying.

Moreover; 3R relay implementation judging part 21 knows that optical node device 3 is not the 3R source node on up light path; And sent UETR=1 from optical node device 2; If as the 3R destination node, then optical node device 4 is 3R source nodes with optical node device 1, on up light path, do not implement the 3R relaying so be judged as.

The light path configuration part 22 of optical node device 3 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 16; When seeing light path setting request (Path) off to optical node device 4, be to carry in light path setting request in this message of the DITR=3 of the optical node device of implementing the 3R relaying on the descending light path with expression optical node device 3.In addition, optical node device 3 is not implemented the 3R relaying on up light path, sets in the request so will intactly carry from the UETR=1 that optical node device 2 is sent at light path.

Accepted to ask from the light path setting of optical node device 3 whether the light path configuration part 22 of the optical node device 4 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 4.The 3R relay implementation judging part 21 of optical node device 4 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 4 is the 3R destination node on descending light path; And sent DITR=3 from optical node device 3; If optical node device 3 is the 3R source nodes on the descending light path, be that 3R is interval then to optical node device 14, need not to implement the 3R relaying so be judged as optical node device 4.

Moreover; 3R relay implementation judging part 21 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; And according to having sent UETR=1 from optical node device 3; Know that optical node device 4 is with the 3R source node of optical node device 1 as the 3R destination node, will implement the 3R relaying so be judged as on up light path on up light path.

The light path configuration part 22 of optical node device 4 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 16; When seeing light path setting request (Path) off to optical node device 5; Because optical node device 4 is not implemented the 3R relaying on descending light path, set in the request so will intactly carry from the DITR=3 of optical node device 3 at light path.

In addition; Owing to be 3R source node but the destination node whether on the up light path; And optical node device 4 is not the 3R destination node on this up light path, and to set in the request as being used for optical node device 5 at light path be the message that optical node device 4 is passed to optical node device 5 as the 3R source node of 3R destination node so UETR=4 is carried in the light path configuration part 22 of optical node device 4.

Accepted to ask from the light path setting of optical node device 4 whether the light path configuration part 22 of the optical node device 5 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 5.The 3R relay implementation judging part 21 of optical node device 5 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 5 is not the 3R source node of descending light path; And sent DITR=3 from optical node device 4; If optical node device 3 is 3R source nodes, be that 3R is interval then to optical node device 14, do not implement the 3R relaying so be judged as optical node device 5.In addition; 3R relay implementation judging part 21 is with reference to the 3R block information and accept UETR=4; Identify that optical node device 5 is with the 3R source node of the optical node device of seeing UETR=4 off 4 as the 3R destination node on up light path, be judged as and on up light path, implement the 3R relaying.

The light path configuration part 22 of optical node device 5 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 16; When seeing light path setting request (Path) off to optical node device 14; Because optical node device 5 is not implemented the 3R relaying on descending light path, set in the request so will intactly carry from the DITR=3 of optical node device 4 at light path.

In addition, optical node device 5 is the 3R source node on up light path, but does not set optical node device 14 as 3R source node, optical node device 5 is interval as the 3R of 3R destination node.In this case; Optical node device 14 according to " oneself do not belonging to via any 3R on the oneself light path when interval with 3R source node; be judged as be will with own as the 3R source node, with oneself the optical node device of next jumping as the optical node device of 3R destination node, oneself enforcement 3R relaying " this judgement policy, need become the 3R source node.Therefore, be that the UETR=5 of 3R destination node carries in the light path request with expression optical node device 5.

Accepted to ask from the light path setting of optical node device 5 whether the light path configuration part 22 of the optical node device 14 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 14.The 3R relay implementation judging part 21 of optical node device 14 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Optical node device 14 is destination nodes; On descending light path, need not to implement the 3R relaying so be judged as; But on up light path, sent UETR=5 from optical node device 5, being judged as need be with optical node device 14 as the 3R source node, implements the 3R relaying with optical node device 5 as the 3R destination node.

The light path configuration part 22 of optical node device 14 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying, and is shown in figure 16, sees light path off to optical node device 5 and sets completion notice (Resv).

optical node device

Another example of work of the optical node device of the 3rd embodiment then, is described.Here, shown in figure 18, the example of setting from the bi-directional light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of optical node device 1 is in order to know that optical node device 1 is which part of the topology of light net, with reference to 3R block information maintaining part 20.Consequently, identify optical node device 1 and be the source node in the bi-directional light path that will set, and be the 3R source node of descending light path, be judged as optical node device 1 and will on descending light path, implement the 3R relaying.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of descending light path setting and 3R relaying; Shown in figure 19; When seeing light path setting request (Path) off to optical node device 10, be to carry in light path setting request in this message of the DITR=1 of the optical node device of implementing the 3R relaying on the descending light path with expression optical node device 1.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that up light path is set; Shown in figure 19; When seeing light path to optical node device 10 off and set request (Path), be that this message of UETR=1 of the 3R destination node on the up light path is carried at light path and set in the request with expression optical node device 1.

Accepted to ask from the light path setting of optical node device 1 whether the light path configuration part 22 of the optical node device 10 of (Path) is the optical node devices that will on the upstream or downstream light path, implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 10.The 3R relay implementation judging part 21 of optical node device 10 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 10 is not the 3R source node on the upstream or downstream light path; And sent DITR=1 from optical node device 1; If optical node device 1 is the 3R source node on descending light path, be that 3R is interval then to optical node device 11, do not implement the 3R relaying so be judged as optical node device 10.In addition; Sent UETR=1 from optical node device 1; Optical node device 1 is the 3R destination node on up light path; According to the 3R block information, know that optical node device 12 is with the 3R source node of optical node device 1 as the 3R destination node, does not implement the 3R relaying so be judged as optical node device 10 yet on up light path.

The light path configuration part 22 of optical node device 10 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that descending and up light path is set; Shown in figure 19; When seeing light path setting request (Path) off to optical node device 11; Because optical node device 10 is not implemented the 3R relaying, set in the request so will intactly carry from DITR=1, the UETR=1 of optical node device 1 at light path.

Accepted to ask from the light path setting of optical node device 10 whether the light path configuration part 22 of the optical node device 11 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 11.The 3R relay implementation judging part 21 of optical node device 11 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Optical node device 11 will be implemented the 3R relaying being the 3R source node from the 3R interval of optical node device 11 to 13 on the descending light path so be judged as.

Moreover; Know that optical node device 11 is not the 3R source node on up light path; And sent UETR=1 from optical node device 10; If as the 3R destination node, then optical node device 12 is 3R source nodes with

optical node device

1,, 3R relay implementation judging part 21 on up light path, do not implement the 3R relaying so being judged as.

The light path configuration part 22 of optical node device 11 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 19; When seeing light path setting request (Path) off to optical node device 12, be to carry in light path setting request in this message of the DITR=11 of the optical node device of implementing the 3R relaying on the descending light path with expression optical node device 11.In addition, optical node device 11 is not implemented the 3R relaying on up light path, sets in the request so will intactly carry from the UETR=1 that optical node device 10 is sent at light path.

Accepted to ask from the light path setting of optical node device 11 whether the light path configuration part 22 of the optical node device 12 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 12.The 3R relay implementation judging part 21 of optical node device 12 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 12 is the 3R destination node on descending light path; And sent DITR=11 from optical node device 11; If optical node device 11 is the 3R source nodes on the descending light path, be that 3R is interval then to optical node device 13, need not to implement the 3R relaying so be judged as optical node device 12.

Moreover; 3R relay implementation judging part 21 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; And according to having sent UETR=1 from optical node device 11; Know that optical node device 12 is with the 3R source node of optical node device 1 as the 3R destination node, will implement the 3R relaying so be judged as on up light path on up light path.

The light path configuration part 22 of optical node device 12 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 19; When seeing light path setting request (Path) off to optical node device 13; Because optical node device 12 is not implemented the 3R relaying on descending light path, set in the request so will intactly carry from the DITR=11 of optical node device 11 at light path.

In addition, optical node device 12 is the 3R source node on up light path, and also is as the 3R destination node under the situation of the 3R source node of up light path with optical node device 14.Therefore, be that the UETR=12 of 3R destination node carries at light path and sets in the request with expression optical node device 12.

Accepted to ask from the light path setting of optical node device 12 whether the light path configuration part 22 of the optical node device 13 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 13.The 3R relay implementation judging part 21 of optical node device 13 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 13 is not the 3R source node of descending light path; And sent DITR=11 from optical node device 12; If optical node device 11 is 3R source nodes, then optical node device 13 is 3R destination nodes.

Here according to " oneself be on the descending light path the 3R destination node, oneself be not destination node, when oneself not being the 3R source node on this descending light path; being judged as is the optical node device of implementing the 3R relaying as the 3R destination node as the 3R source node, with the optical node device of next jumping on the descending light path with own " this judgement policy judges, is judged as optical node device 13 and will implements the 3R relaying.

In addition, on up light path, sent UETR=12, thus, known between optical node device 14 and the optical node device 12 it is that 3R is interval, do not implemented the 3R relaying so be judged as optical node device 13.

The light path configuration part 22 of optical node device 13 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 19; When seeing light path setting request (Path) off to optical node device 14; Because optical node device 13 will be implemented the 3R relaying on descending light path, so DITR=13 is carried in light path setting request.In addition, optical node device 13 is not implemented the 3R relaying on up light path, sets in the request so will intactly carry from the UETR=12 of optical node device 12 at light path.

Accepted to ask from the light path setting of optical node device 13 whether the light path configuration part 22 of the optical node device 14 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 14.The 3R relay implementation judging part 21 of optical node device 14 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Optical node device 14 is destination nodes; On descending light path, need not to implement the 3R relaying so be judged as; But on up light path, sent UETR=12 from optical node device 13, being judged as need be with optical node device 14 as the 3R source node, implements the 3R relaying with optical node device 12 as the 3R destination node.

The light path configuration part 22 of optical node device 14 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying, and is shown in figure 19, sees light path off to optical node device 13 and sets completion notice (Resv).

optical node device

(the 4th embodiment)

The optical node device of the 4th embodiment is described with reference to Figure 11, Figure 14, Figure 15, Figure 17, Figure 18, Figure 20.Figure 14 is the figure of the 3R block information of the 4th embodiment, and is public with the 3rd embodiment.Figure 15, Figure 18 are light path and the interval figure of 3R that sets in the light net, and be public with the 3rd embodiment.The figure of the signaling procedure when Figure 17, Figure 20 are the setting light paths of the 4th embodiment.

The 4th embodiment explanation is set the example of the optical node device that will implement the 3R relaying among both during all in signaling at the up light path in bi-directional light path and descending light path.The optical node device of the 4th embodiment is described with structure shown in Figure 11.In structure shown in Figure 11, the optical node device suitable with source node is specific to the optical node device that will implement the 3R relaying on the light path of destination node, asks this optical node device to implement the 3R relaying.In 3R block information maintaining part 20, keeping 3R block information shown in Figure 14.

In the 4th embodiment; Same with the 2nd embodiment; The optical node device specific 3R relay implementation node suitable with source node; So the optical node device suitable with source node keeps the 3R block information to get final product, need not as the 3rd embodiment, all optical node devices or a plurality of optical node devices relevant with the light path setting keep the 3R block informations.Therefore, if make to have only the optical node device suitable to keep the 3R block information, then can effectively utilize the information stores resource with source node.

The work of the optical node device of the 4th embodiment then, is described.Here, shown in figure 15, the example of setting from the bi-directional light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation node particular portion 25 of the optical node device 1 suitable with source node is in order to know that optical node device 1 is which part of the topology of light net, with reference to 3R block information maintaining part 20.Consequently, identify optical node device 1 and be the source node in the bi-directional light path that will set, and be the 3R source node of descending light path, be judged as optical node device 1 and will on descending light path, implement the 3R relaying.

Moreover 3R relay implementation node particular portion 25 is with reference to 3R block information maintaining part 20, identifies optical node device 1 and be the 3R destination node of the up light path that will set, is judged as optical node device 1 and on up light path, do not implement the 3R relaying.

In addition, 3R relay implementation node particular portion 25 judges whether optical node device 2 is the optical node devices that will on the upstream or downstream light path, implement the 3R relaying.3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 2 is not the 3R source node on the upstream or downstream light path; If optical node device 1 is the 3R source node on descending light path; Be that 3R is interval then, do not implement the 3R relaying so be judged as optical node device 2 to optical node device 4.In addition; Optical node device 1 is the 3R destination node on up light path; According to the 3R block information, know that optical node device 4 is with the 3R source node of optical node device 1 as the 3R destination node, does not implement the 3R relaying so be judged as optical node device 2 yet on up light path.

In addition, 3R relay implementation node particular portion 25 judges whether optical node device 3 is the optical node devices that will implement the 3R relaying.3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Identify optical node device 3 owing to be so that 3R source node from the 3R interval of optical node device 3 to 14 can be implemented the 3R relaying on the descending light path, so perhaps owing on 4 3R interval, be not that the 3R source node also can not implemented to make light signal intactly be transmitted to the 3R destination node the 3R then on the descending light path from optical node device 1 to optical node device--optical node device 4.

In this case; 3R relay implementation node particular portion 25 usefulness 3R implement simulation part 23 and comparison portion 24; To light path from optical node device 3 to 14, relatively optical node device 3 play the situation of 3R source node with the situation both of these case that does not play the 3R source node under 3R enforcement number of times.Below explanation is identical with the 1st embodiment.

The analog result that this 3R implements simulation part 23 is imported into comparison portion 24.Comparison portion 24 knows that optical node device 3 implements the 3R relaying and compare with the situation of not implementing the 3R relaying and can reduce 3R and implement number of times on descending light path, exports as comparative result so should look like.It is that 3R implements the few side of number of times that 3R relay implementation node particular portion 25 is selected comparative result.Therefore, be judged as optical node device 3 and will on descending light path, implement the 3R relaying.

Moreover; 3R relay implementation node particular portion 25 knows that optical node device 3 is not the 3R source node on up light path; And if with optical node device 1 as the 3R destination node, then optical node device 4 is 3R source nodes, on up light path, does not implement the 3R relaying so be judged as.

In addition, 3R relay implementation node particular portion 25 judges whether optical node device 4 is the optical node devices that will implement the 3R relaying.3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 4 is the 3R destination node on descending light path; And if optical node device 3 is the 3R source nodes on the descending light path; Be that 3R is interval then, need not to implement the 3R relaying so be judged as optical node device 4 to optical node device 14.

Moreover; 3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 4 is with the 3R source node of optical node device 1 as the 3R destination node, will implement the 3R relaying so be judged as on up light path on up light path.

In addition, 3R relay implementation node particular portion 25 judges whether optical node device 5 is the optical node devices that will implement the 3R relaying.3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 5 is not the 3R source node of descending light path; And if optical node device 3 is 3R source nodes; Be that 3R is interval then, do not implement the 3R relaying so be judged as optical node device 5 to optical node device 14.In addition, identifying optical node device 5 is 3R source nodes of up light path, is judged as on up light path, to implement the 3R relaying.

In addition, 3R relay implementation node particular portion 25 judges whether optical node device 14 is the optical node devices that will implement the 3R relaying.3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Optical node device 14 is destination nodes; On descending light path, need not to implement the 3R relaying so be judged as, but on up light path, need implement the 3R relaying as the 3R source node.

Its reason is that optical node device 5 is the 3R source node on up light path, but does not set optical node device 14 as 3R source node, optical node device 5 is interval as the 3R of 3R destination node.In this case; Optical node device 14 according to " oneself do not belonging to via any 3R on the oneself light path when interval with 3R source node; be judged as be will with own as the 3R source node, with oneself the optical node device of next jumping as the optical node device of 3R destination node, oneself enforcement 3R relaying " this judgement policy, need become the 3R source node.

Like this, the specific optical node device that will implement the 3R relaying from the light path of optical node device 1 to 14 of source node--optical node device 1.And then; Optical node device 1 is exported DE * TR (Downstream Explicit Three R from 3R relay implementation request section 26 respectively to the own specific optical node device that will implement the 3R relaying 3 that goes out; Descending explicit 3R)=3 UE * TR (Upstream Explicit Three R; Up explicit 3R)=4,5,14 as the 3R relay implementation request of descending and up light path.

Be able to specific go out will implement the optical node device of 3R relaying after, shown in figure 17, the light path configuration part of optical node device 1 22 is carried out and is used for the signaling procedure that light path is set.That is, optical node device 1 is preserved for the resource of light path setting and 3R relaying, sees light path off to optical node device 2 and sets request (Path).At this moment, in light path setting request, carry DE * TR=3, UE * TR=4 respectively, 5,14.

The optical node device of having accepted to set request (Path) from the light path of optical node device 12 is with reference to DE * TR=3, UE * TR=4; 5; 14; Identifying oneself is not the optical node device that will implement the 3R relaying, is preserved for the resource that light path is set, and sees light path off to optical node device 3 and sets request (Path).At this moment, intactly carry the DE * TR=3, the UE * TR=4 that send from

optical node device

1,5,14.

The optical node device of having accepted to set request (Path) from the light path of optical node device 23 is with reference to DE * TR=3, UE * TR=4; 5; 14; Identifying oneself is the optical node device that will on descending light path, implement the 3R relaying, is preserved for the resource of light path setting and 3R relaying, sees light path off to optical node device 4 and sets request (Path).At this moment, to implement to delete DE * TR=3 behind the 3R relaying identifying optical node device 3, carry UE * TR=4,5,14 so set in the request at light path.

The optical node device of having accepted to set request (Path) from the light path of optical node device 34 is with reference to UE * TR=4; 5; 14; Identifying oneself is the optical node device that will on up light path, implement the 3R relaying, is preserved for the resource of light path setting and 3R relaying, sees light path off to optical node device 5 and sets request (Path).At this moment, to implement to delete UE * TR=4 behind the 3R relaying identifying optical node device 4, carry UE * TR=5,14 so set in the request at light path.

The optical node device of having accepted to set request (Path) from the light path of optical node device 45 is with reference to UE * TR=5; 14; Identifying oneself is the optical node device that will on up light path, implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 14 and set request (Path).At this moment, to implement to delete UE * TR=5 behind the 3R relaying identifying optical node device 5, carry UE * TR=14 so set in the request at light path.

The optical node device of having accepted to set request (Path) from the light path of optical node device 5 14 is with reference to UE * TR=14; Identifying oneself is the optical node device that will on up light path, implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 5 and set completion notice (Resv).Light path is set to accomplish and is notified (Resv) to transmit by optical node device 5 → 4 → 3 → 2 → 1, accomplishes light path and sets.

Like this; As the optical node device of source node at the specific optical node device that will implement the 3R relaying to the bi-directional light path of destination node; So the indication that other optical node devices on this bi-directional light path are only deferred to from source node gets final product, and can alleviate computation burden.In addition, the 3R block information can be do not kept, the information stores resource can be effectively utilized as the optical node device beyond the optical node device of source node.

Another example of work of the optical node device of the 4th embodiment then, is described.Here, shown in figure 18, the example of setting from the bi-directional light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation node particular portion 25 of the optical node device 1 suitable with source node is in order to know that optical node device 1 is which part of the topology of light net, with reference to 3R block information maintaining part 20.Consequently, identify optical node device 1 and be the source node in the bi-directional light path that will set, and be the 3R source node of descending light path, be judged as optical node device 1 and will on descending light path, implement the 3R relaying.

In addition, 3R relay implementation node particular portion 25 judges whether optical node device 10 is the optical node devices that will on the upstream or downstream light path, implement the 3R relaying.3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Know that optical node device 10 is not the 3R source node on the upstream or downstream light path; If optical node device 1 is the 3R source node on descending light path; Be that 3R is interval then, do not implement the 3R relaying so be judged as optical node device 10 to optical node device 11.In addition; Optical node device 1 is the 3R destination node on up light path; According to the 3R block information, know that optical node device 12 is with the 3R source node of optical node device 1 as the 3R destination node, does not implement the 3R relaying so be judged as optical node device 10 yet on up light path.

In addition, 3R relay implementation node particular portion 25 judges whether optical node device 11 is the optical node devices that will implement the 3R relaying.3R relay implementation node particular portion 25 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20, and optical node device 11 will be implemented the 3R relaying being the 3R source node from the 3R interval of optical node device 11 to 13 on the descending light path so be judged as.Moreover, know that optical node device 11 is not the 3R source node on up light path, and if with optical node device 1 as the 3R destination node, then optical node device 12 is 3R source nodes, on up light path, does not implement the 3R relaying so be judged as.

In addition; 3R relay implementation node particular portion 25 know optical node device 12 on descending light path neither the 3R source node neither the 3R destination node; And if optical node device 11 is the 3R source nodes on the descending light path; Be that 3R is interval then, need not to implement the 3R relaying so be judged as optical node device 12 to optical node device 13.Moreover, know that optical node device 12 is with the 3R source node of optical node device 1 as the 3R destination node, will implement the 3R relaying so be judged as on up light path on up light path.

In addition, 3R relay implementation node particular portion 25 knows that optical node device 13 is not the 3R source node of descending light path, and if optical node device 11 are 3R source nodes, then optical node device 13 is 3R destination nodes.Here according to " be the optical node device suitable at an optical node device with the 3R destination node, when being not destination node; determine for be will an above-mentioned optical node device as the 3R source node, with the optical node device of next jumping optical node device as 3R destination node, above-mentioned optical node device enforcement 3R relaying " this judgement policy judges, is judged as optical node device 13 and will implements the 3R relaying.Moreover, know between optical node device 14 on the up light path and optical node device 12 it is that 3R is interval, do not implement the 3R relaying so be judged as optical node device 13.

In addition; Optical node device 14 is destination nodes; So 3R relay implementation node particular portion 25 is judged as and on descending light path, need not to implement the 3R relaying, but need be on up light path with optical node device 14 as the 3R source node, optical node device 12 is implemented the 3R relaying as the 3R destination node.

Like this, the specific optical node device that will implement the 3R relaying from the light path of optical node device 1 to 14 of source node--optical node device 1.And then optical node device 1 is exported DE * TR=11 from 3R relay implementation request section 26 respectively to the own specific optical node device that will implement the 3R relaying 3 that goes out, 13, UE * TR=12, and 14 3R relay implementation requests as descending and up light path.

Be able to specific go out will implement the optical node device of 3R relaying after, shown in figure 20, the light path configuration part of optical node device 1 22 is carried out and is used for the signaling procedure that light path is set.That is, optical node device 1 is preserved for the resource of light path setting and 3R relaying, sees light path off to optical node device 10 and sets request (Path).At this moment, set in the request at light path and to carry DE * TR=11 respectively, 13, UE * TR=12,14.

The optical node device of having accepted to set request (Path) from the light path of optical node device 1 10 is with reference to DE * TR=11; 13, UE * TR=12; 14; Identifying oneself is not the optical node device that will implement the 3R relaying, is preserved for the resource that light path is set, and sees light path off to optical node device 11 and sets request (Path).At this moment, intactly carry the DE * TR=11 that sends from

optical node device

1,13, UE * TR=12,14.

The optical node device of having accepted to set request (Path) from the light path of optical node device 10 11 is with reference to DE * TR=11; 13, UE * TR=12; 14; Identifying oneself is the optical node device that will on descending light path, implement the 3R relaying, is preserved for the resource of light path setting and 3R relaying, sees light path off to optical node device 12 and sets request (Path).At this moment, to implement to delete DE * TR=11 behind the 3R relaying identifying optical node device 3, carry DE * TR=13 and UE * TR=12,14 so set in the request at light path.

The optical node device of having accepted to set request (Path) from the light path of optical node device 11 12 is with reference to DE * TR=13 and UE * TR=12; 14; Identifying oneself is the optical node device that will on up light path, implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 13 and set request (Path).At this moment, to implement to delete UE * TR=12 behind the 3R relaying identifying optical node device 12, carry DE * TR=13 and UE * TR=14 so set in the request at light path.

The optical node device of having accepted to set request (Path) from the light path of optical node device 12 13 is with reference to DE * TR=13 and UE * TR=14; Identifying oneself is the optical node device that will on descending light path, implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 14 and set request (Path).At this moment, to implement to delete DE * TR=13 behind the 3R relaying identifying optical node device 13, carry UE * TR=14 so set in the request at light path.

The optical node device of having accepted to set request (Path) from the light path of optical node device 13 14 is with reference to UE * TR=14; Identifying oneself is the optical node device that will on up light path, implement the 3R relaying; Be preserved for the resource of light path setting and 3R relaying, see light path off to optical node device 13 and set completion notice (Resv).Light path is set to accomplish and is notified (Resv) to transmit by optical node device 13 → 12 → 11 → 10 → 1, accomplishes light path and sets.

(the 5th embodiment)

The optical node device of the 5th embodiment is described with reference to Fig. 3, Fig. 4, Fig. 5, Fig. 9, Figure 21～Figure 26.Figure 21, Figure 22, Figure 24, Figure 25 are the figure of the 3R block information in the optical node device of the 5th embodiment.The figure of the signaling procedure when Figure 23, Figure 26 are the setting light paths of the 5th embodiment.

The optical node device of the 5th embodiment is characterised in that as shown in Figure 4, comprising: 3R block information maintaining part 20 keeps own 3R block information as the 3R source node; With 3R relay implementation judging part 21; The expression of accepting to comprise in the light path setting request oneself is the message of 3R destination node; When oneself being not destination node; With reference to 3R block information maintaining part 20, when oneself being the 3R source node on this light path, being judged as is the optical node device that will implement the 3R relaying.In addition, light path configuration part 22 to own seeing off as the interval suitable optical node device of 3R destination node of the 3R on the light path of 3R source node is used to transmit the message that this optical node device is the 3R destination node.

Wherein, The expression oneself that 3R relay implementation judging part 21 is accepted to comprise in the light path setting request is the message of 3R destination node; When oneself being not destination node; With reference to 3R block information maintaining part 20, when oneself not being the 3R source node on this light path, being judged as is the optical node device of implementing the 3R relaying as the 3R destination node as the 3R source node, with the optical node device of next jumping with own.In addition, light path configuration part 22 is seen off to the optical node device of this next jumping and is used to transmit the message that this optical node device is the 3R destination node.

In the 5th embodiment, the optical node device suitable with the 3R source node keeps the 3R block information relevant with this 3R source node.Do not keep other 3R block informations, so can effectively utilize the information stores resource.

The work of the optical node device of the 5th embodiment then, is described.Here, as shown in Figure 5, the example of setting from the light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of the optical node device 1 suitable with the 3R source node identifies to have sent sets request with optical node device 1 as the light path of source node, is judged as optical node device 1 and will on light path, implements the 3R relaying.In addition, in 3R block information maintaining part 20, keeping 3R block information shown in Figure 21, identifying optical node device 1 thus is optical node device 4 as the 3R destination node under the situation of 3R source node.

Notified the light path configuration part 22 of recognition result of 3R relay implementation judging part 21 shown in figure 23; Generating DITR=1 is the message of 3R source node as expression optical node device 1, and generates DETR=4 as representing that optical node device 4 is the message of 3R destination node.Light path configuration part 22 is preserved for the resource of light path setting and 3R relaying, when seeing light path setting request (Path) off to optical node device 2, carries DITR=1, DETR=4.

The 3R relay implementation judging part of having accepted to set the optical node device 2 of asking (Path) from the light path of optical node device 1 21 is with reference to DITR=1, DETR=4, and identifying oneself is not the optical node device that will implement the 3R relaying.The light path configuration part 22 of optical node device 2 is preserved for the resource that light path is set, and when seeing light path setting request (Path) off to optical node device 3, intactly carries DITR=1, DETR=4 from optical node device 1.

The 3R relay implementation judging part of having accepted to set the optical node device 3 of asking (Path) from the light path of optical node device 2 21 is with reference to DITR=1, DETR=4; Moreover; Optical node device 3 is 3R source nodes; So in 3R block information maintaining part 20, keeping 3R block information shown in Figure 22, with reference to this 3R block information.Set DETR=4 in the message that comprises in the request at light path, optical node device 4 is designated as the 3R destination node, and 3R relay implementation judging part 21 judges whether optical node device 3 is the optical node devices that will implement the 3R relaying.

3R relay implementation judging part 21 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; Identify optical node device 3 owing to be so that 3R source node from the 3R interval of optical node device 3 to 14 can be implemented the 3R relaying, so perhaps owing on 4 3R interval, be not that the 3R source node also can not implemented to make light signal intactly be transmitted to the 3R destination node the 3R then from optical node device 1 to optical node device--optical node device 4.

In this case; 3R relay implementation judging part 21 usefulness 3R implement simulation part 23 and comparison portion 24; To light path from optical node device 3 to 14, relatively optical node device 3 play the situation of 3R source node with the situation both of these case that does not play the 3R source node under 3R enforcement number of times.Below explanation is identical with the 1st embodiment.

Light path configuration part 22 is accepted this judgement and is preserved for the resource of light path setting and 3R relaying; When seeing light path setting request (Path) off to optical node device 4; Shown in figure 23, carry DITR=3, DETR=14 as representing that optical node device 3 is that 3R source node, optical node device 14 are the message of 3R destination node.

The 3R relay implementation judging part of having accepted to set the optical node device 4 of asking (Path) from the light path of optical node device 3 21 is with reference to DITR=3, DETR=14, and identifying oneself is not the optical node device that will implement the 3R relaying.The light path configuration part 22 of optical node device 4 is preserved for the resource that light path is set, and when seeing light path setting request (Path) off to optical node device 5, intactly carries DITR=3, DETR=14 from optical node device 3.

The 3R relay implementation judging part of having accepted to set the optical node device 5 of asking (Path) from the light path of optical node device 4 21 is with reference to DITR=3, DETR=14, and identifying oneself is not the optical node device that will implement the 3R relaying.The light path configuration part 22 of optical node device 5 is preserved for the resource that light path is set, and when seeing light path setting request (Path) off to optical node device 14, intactly carries DITR=3, DETR=14 from optical node device 4.

The 3R relay implementation judging part of having accepted to set the optical node device 14 of asking (Path) from the light path of optical node device 5 21 is with reference to DITR=3, DETR=14, and identifying oneself is the 3R destination node.And then according to " oneself be with light path on the suitable optical node device of 3R destination node, when being not destination node; with own as the 3R source node, ask the optical node device of this next jumping to implement the 3R relaying as the 3R destination node optical node device of next jumping " this judges that policy judges whether oneself will implement the 3R relaying; But set request with reference to light path, identify and oneself be destination node and be judged as and need not to implement the 3R relaying.

The light path configuration part 22 of optical node device 14 is preserved for the resource that light path is set, and sees light path off to optical node device 5 and sets completion notice (Resv).Light path is set to accomplish and is notified (Resv) to transmit by optical node device 5 → 4 → 3 → 2 → 1, accomplishes the setting of light path.

The work of the optical node device of the 5th embodiment then, is described with another example.Here, as shown in Figure 9, the example of setting from the light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of the optical node device 1 suitable with the 3R source node identifies to have sent sets request with optical node device 1 as the light path of source node, is judged as optical node device 1 and will on light path, implements the 3R relaying.In addition, in 3R block information maintaining part 20, keeping 3R block information shown in Figure 21, identifying optical node device 1 thus is optical node device 11 as the 3R destination node under the situation of 3R source node.

Having been notified the light path configuration part 22 generation DITR=1 of the recognition result of 3R relay implementation judging part 21 is the message of 3R source node as expression optical node device 1, and generates DETR=11 as representing that optical node device 11 is the message of 3R destination node.Light path configuration part 22 is preserved for the resource of light path setting and 3R relaying, and is shown in figure 26 when seeing light path setting request (Path) off to optical node device 10, carries DITR=1, DETR=11.

The optical node device of having accepted to set request (Path) from the light path of optical node device 1 10 is with reference to DITR=1, DETR=11, and identifying oneself is not the optical node device that will implement the 3R relaying.The light path configuration part 22 of optical node device 10 is preserved for the resource that light path is set, and when seeing light path setting request (Path) off to optical node device 11, intactly carries DITR=1, DETR=11 from optical node device 1.

The 3R relay implementation judging part of having accepted to set the optical node device 11 of asking (Path) from the light path of optical node device 10 21 is with reference to DITR=1, DETR=11; Moreover; Optical node device 11 is 3R source nodes; So in 3R block information maintaining part 20, keeping 3R block information shown in Figure 24, with reference to this 3R block information.Thus, identify and oneself be the 3R destination node and be as the interval 3R source node of the 3R of 3R destination node with optical node device 13.

The light path configuration part 22 generation DITR=11 that accepted this recognition result oneself are the message of 3R source node as expression, and generating DETR=13 is the message of 3R destination node as expression optical node device 13.

The light path configuration part 22 of optical node device 11 is preserved for the resource of light path setting and 3R relaying, when seeing light path setting request (Path) off to optical node device 12, carries DITR=11, DETR=13.

The 3R relay implementation judging part of having accepted to set the optical node device 12 of asking (Path) from the light path of optical node device 11 21 is with reference to DITR=11, DETR=13, and identifying oneself is not the optical node device that will implement the 3R relaying.The light path configuration part 22 of optical node device 12 is preserved for the resource that light path is set, and when seeing light path setting request (Path) off to optical node device 13, intactly carries DITR=11, DETR=13 from optical node device 11.

The 3R relay implementation judging part of having accepted to set the optical node device 13 of asking (Path) from the light path of optical node device 12 21 is with reference to DITR=11, DETR=13; Moreover; Optical node device 13 is 3R source nodes; So in 3R block information maintaining part 20, keeping 3R block information shown in Figure 25, with reference to this 3R block information.Thus, identify and oneself be the 3R destination node and be as the interval 3R source node of the 3R of 3R destination node with optical node device 14.

The light path configuration part 22 generation DITR=13 that accepted this recognition result oneself are the message of 3R source node as expression, and generating DETR=14 is the message of 3R destination node as expression optical node device 14.

The light path configuration part 22 of optical node device 13 is preserved for the resource of light path setting and 3R relaying, when seeing light path setting request (Path) off to optical node device 14, carries DITR=13, DETR=14.

The 3R relay implementation judging part of having accepted to set the optical node device 14 of asking (Path) from the light path of optical node device 13 21 is with reference to DITR=13, DETR=14, and identifying oneself is the 3R destination node.And then according to " oneself be with light path on the suitable optical node device of 3R destination node, when being not destination node; with own as the 3R source node, ask the optical node device of this next jumping to implement the 3R relaying as the 3R destination node optical node device of next jumping " this judgement policy judges; According to oneself being destination node, being judged as and need not to implement the 3R relaying.

The light path configuration part 22 of optical node device 14 is preserved for the resource that light path is set, and sees light path off to optical node device 13 and sets completion notice (Resv).Light path is set to accomplish and is notified (Resv) to transmit by optical node device 13 → 12 → 11 → 10 → 1, accomplishes the setting of light path.

(the 6th embodiment)

The optical node device of the 6th embodiment is described with reference to Fig. 4, Figure 14, Figure 15, Figure 27～Figure 36.Figure 27～Figure 30, Figure 32～Figure 35 are the figure of the 3R block information in the optical node device of the 6th embodiment.The figure of the signaling procedure when Figure 31, Figure 36 are the setting light paths of the 6th embodiment.

The optical node device of the 6th embodiment is as shown in Figure 4, comprising: 3R block information maintaining part 20 keeps own 3R block information as 3R source node and 3R destination node; With light path configuration part 22; The expression of accepting to comprise in the light path setting request oneself is the message of the 3R destination node on the descending light path; When oneself being not destination node; With reference to 3R block information maintaining part 20; When oneself being the 3R source node on this descending light path, being judged as is the optical node device that will implement the 3R relaying, and to own seeing off as the interval suitable optical node device of 3R destination node of the 3R on the descending light path of 3R source node is used to transmit the message that this optical node device is the 3R destination node.

In addition; The expression oneself that light path configuration part 22 is accepted to comprise in the light path setting request is the message of the 3R source node on the up light path; Being judged as oneself is the optical node device that will on up light path, implement the 3R relaying; And when oneself being not destination node; With reference to 3R block information maintaining part 20, when oneself being the 3R destination node on this up light path, to own seeing off as the suitable optical node device of 3R source node on the up light path of 3R destination node is used to transmit the message that this optical node device is the 3R source node.

Moreover; The expression oneself that light path configuration part 22 is accepted to comprise in the light path setting request is the message of the 3R destination node on the descending light path; When oneself being not destination node; With reference to 3R block information maintaining part 20; When oneself not being the 3R source node on this descending light path, be judged as be with own as the 3R source node, the optical node device of next jumping on the descending light path is implemented the optical node device of 3R relaying as the 3R destination node, and to generate this optical node device of optical node device transmission that is used for to this next jumping be the message of the 3R destination node of oneself.

In addition; The expression oneself that light path configuration part 22 is accepted to comprise in the light path setting request is the message of the 3R source node on the up light path; Being judged as oneself is the optical node device that will on up light path, implement the 3R relaying; And when oneself being not destination node; With reference to 3R block information maintaining part 20, when oneself not being the 3R destination node on this up light path, generating the optical node device that is used for the previous dive on the up light path is the optical node device that passes to this previous dive as the 3R source node of 3R destination node with own.

In the 6th embodiment, keep and own relevant 3R block information with 3R source node or the suitable optical node device of 3R destination node.Do not keep other 3R block informations, so can effectively utilize the information stores resource.

The work of the optical node device of the 6th embodiment then, is described.Here, shown in figure 15, the example of setting from the bi-directional light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of optical node device 1 identifies and has sent the bi-directional light path setting request of optical node device 1 as source node, is judged as optical node device 1 and will on descending light path, implements the 3R relaying.In addition, in 3R block information maintaining part 20, keeping 3R block information shown in Figure 27, identifying thus is being optical node device 4 with optical node device 1 as the 3R destination node under the situation of 3R source node on the descending light path.In addition, identify on the up light path with optical node device 4 as the situation of 3R source node under optical node device 1 be the 3R destination node.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that descending light path is set; Shown in figure 31; When seeing light path to optical node device 2 off and set request (Path), be that the interval 3R destination node of 3R source node and this 3R is that DITR=1, this message of DETR=4 of optical node device 4 is carried at light path and set in the request (Path) on the descending light path with expression optical node device 1.

Moreover 3R relay implementation judging part 21 is with reference to 3R block information maintaining part 20, identifies optical node device 1 and be the 3R destination node of the up light path that will set, is judged as optical node device 1 and on up light path, do not implement the 3R relaying.The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that up light path is set; Shown in figure 31; When seeing light path to optical node device 2 off and set request (Path), be that UETR=1, this message of UITR=4 that 3R destination node and the interval 3R source node of this 3R on the up light path are optical node device 4 is carried at light path and set in the request (Path) with expression optical node device 1.

Accepted to ask from the light path setting of optical node device 1 whether the light path configuration part 22 of the optical node device 2 of (Path) is the optical node devices that will on the upstream or downstream light path, implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 2.Optical node device 2 is not 3R source node or 3R destination node, so 3R block information maintaining part 20 does not keep the 3R block information.Therefore, be judged as optical node device 2 and do not implement the 3R relaying.

The light path configuration part 22 of optical node device 2 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that the downlink or uplink light path is set; Shown in figure 31; When seeing light path setting request (Path) off to optical node device 3; Because optical node device 2 is not implemented the 3R relaying, set in the request so will intactly carry from DITR=1, DETR=4, UETR=1, the UITR=4 of optical node device 1 at light path.

Accepted to ask from the light path setting of optical node device 2 whether the light path configuration part 22 of the optical node device 3 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 3.The 3R relay implementation judging part 21 of optical node device 3 is with reference to the 3R block information shown in Figure 28 that keeps in the 3R block information maintaining part 20; So identify optical node device 3 owing to be that 3R source node from the 3R interval of optical node device 3 to 14 can be implemented the 3R relaying on the descending light path; But according to DITR=1, DETR=4; On descending light path, exist from optical node device 1 to optical node device 4 3R interval; Optical node device 3 is not the 3R source node on this 3R interval, so also can not implement to make light signal intactly be transmitted to the 3R destination node among the 3R then--and optical node device 4.

In this case; The 3R relay implementation judging part 21 usefulness 3R of optical node device 3 implement simulation part 23 and comparison portion 24; To descending light path from optical node device 3 to 14, relatively optical node device 3 play the situation of 3R source node with the situation both of these case that does not play the 3R source node under 3R enforcement number of times.Below explanation is identical with the 1st embodiment.

Moreover; 3R relay implementation judging part 21 knows that optical node device 3 is not the 3R source node on up light path; And UETR=1, UITR=4 have been sent from optical node device 2; Existence as 3R destination node, optical node device 4 is interval as the 3R of 3R source node, on up light path is not implemented 3R relaying so be judged as with optical node device 1.

The light path configuration part 22 of optical node device 3 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 31; When seeing light path to optical node device 4 off and set request (Path), be that the interval 3R destination node of 3R source node and this 3R is that DITR=3, this message of DETR=14 of optical node device 14 is carried at light path and set in the request on the descending light path with expression optical node device 3.In addition, optical node device 3 is not implemented the 3R relaying on up light path, sets in the request so will intactly carry from UETR=1, the UITR=4 that optical node device 2 is sent at light path.

Accepted to ask from the light path setting of optical node device 3 whether the light path configuration part 22 of the optical node device 4 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 4.The 3R relay implementation judging part 21 of optical node device 4 is with reference to the 3R block information shown in Figure 29 that keeps in the 3R block information maintaining part 20; Know that optical node device 4 is the 3R destination node on descending light path; And DITR=3, DETR=14 have been sent from optical node device 3; If optical node device 3 is the 3R source nodes on the descending light path, be that 3R is interval then to optical node device 14, need not to implement the 3R relaying so be judged as optical node device 4.

Moreover; 3R relay implementation judging part 21 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; And according to having sent UETR=1, UITR=4 from optical node device 3; Know that optical node device 4 is with the 3R source node of optical node device 1 as the 3R destination node, will implement the 3R relaying so be judged as on up light path on up light path.

The light path configuration part 22 of optical node device 4 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 31; When seeing light path setting request (Path) off to optical node device 5; Optical node device 4 is not implemented the 3R relaying on descending light path, set in the request so will intactly carry from DITR=3, the DETR=14 of optical node device 3 at light path.

In addition, identifying optical node device 4 is the 3R source node on up light path, but passes through with reference to 3R block information maintaining part 20, and identifying oneself is not the 3R destination node on this up light path yet.At this moment, the optical node device 5 of the previous dive on the up light path need become own 3R source node as the 3R destination node.Therefore, in order this to be passed to optical node device 5, UETR=4, UITR=5 are carried in light path setting request.

Accepted to ask from the light path setting of optical node device 4 whether the light path configuration part 22 of the optical node device 5 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 5.The 3R relay implementation judging part 21 of optical node device 5 is with reference to the 3R block information shown in Figure 30 that keeps in the 3R block information maintaining part 20; Know that optical node device 5 is not the 3R source node of descending light path; And DITR=3, DETR=14 have been sent from optical node device 4; If optical node device 3 is 3R source nodes, be that 3R is interval then to optical node device 14, do not implement the 3R relaying so be judged as optical node device 5.In addition; 3R relay implementation judging part 21 has been sent UETR=4, UITR=5 from optical node device 4; And with reference to 3R block information maintaining part 20, identifying optical node device 5 is 3R source nodes of up light path, is judged as and will on up light path, implements the 3R relaying.

The light path configuration part 22 of optical node device 5 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 31; When seeing light path setting request (Path) off to optical node device 14; Optical node device 5 is not implemented the 3R relaying on descending light path, set in the request so will intactly carry from DITR=3, the DETR=14 of optical node device 4 at light path.

In addition, optical node device 5 is the 3R source node on up light path, but does not set optical node device 14 as 3R source node, optical node device 5 is interval as the 3R of 3R destination node.In this case; Optical node device 14 according to " oneself do not belonging to via any 3R on the oneself light path when interval with 3R source node; be judged as be will with own as the 3R source node, with oneself the optical node device of next jumping as the optical node device of 3R destination node, oneself enforcement 3R relaying " this judgement policy, need become the 3R source node.Therefore, be that 3R destination node, the interval 3R source node of this 3R are that UETR=5, the UITR=14 of optical node device 14 carries in the light path request with expression optical node device 5.

Accepted to ask from the light path setting of optical node device 5 whether the light path configuration part 22 of the optical node device 14 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 14.The 3R relay implementation judging part 21 of optical node device 14 is with reference to the 3R block information shown in Figure 35 that keeps in the 3R block information maintaining part 20; Optical node device 14 is destination nodes; On descending light path, need not to implement the 3R relaying so be judged as; But on up light path, sent UETR=5, UITR=14 from optical node device 5, need be with optical node device 14 as the 3R source node, optical node device 5 be implemented the 3R relaying as the 3R destination node.

The light path configuration part 22 of optical node device 14 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying, and is shown in figure 31, sees light path off to optical node device 5 and sets completion notice (Resv).

optical node device

Another example of work of the optical node device of the 6th embodiment then, is described.Here, shown in figure 18, the example of setting from the bi-directional light path (two-wire part) of optical node device 1 to 14 is described.The 3R relay implementation judging part 21 of optical node device 1 identifies and has sent the bi-directional light path setting request of optical node device 1 as source node, is judged as optical node device 1 and will on descending light path, implements the 3R relaying.In addition, in 3R block information maintaining part 20, keeping 3R block information shown in Figure 27, identifying thus is being optical node device 11 with optical node device 1 as the 3R destination node under the situation of 3R source node on the descending light path.In addition, identify on the up light path with optical node device 12 as the situation of 3R source node under optical node device 1 be the 3R destination node.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that descending light path is set; Shown in figure 36; When seeing light path setting request (Path) off to optical node device 10, be that the DITR=1 of optical node device 11, DETR=11 this message carry on light path setting request in the 3R destination node that is 3R source node, this 3R interval on the descending light path with expression optical node device 1.

The light path configuration part 22 of optical node device 1 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of up light path setting and 3R relaying; Shown in figure 36; When seeing light path setting request (Path) off to optical node device 10, be that the 3R destination node on the up light path, UETR=1, this message of UITR=12 that the interval 3R source node of this 3R is optical node device 12 are carried in light path setting request with expression optical node device 1.

Accepted to ask from the light path setting of optical node device 1 whether the light path configuration part 22 of the optical node device 10 of (Path) is the optical node devices that will on the upstream or downstream light path, implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 10.Optical node device 10 does not keep the 3R block information neither the 3R source node neither the 3R destination node in 3R block information maintaining part 20.Therefore, be judged as on which light path of optical node device 10 in upstream and downstream and do not implement the 3R relaying.

The light path configuration part 22 of optical node device 10 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource that descending and up light path is set; Shown in figure 36; When seeing light path setting request (Path) off to optical node device 11; Because optical node device 10 is not implemented the 3R relaying, set in the request so will intactly carry from DITR=1, DETR=11, UETR=1, the UITR=12 of optical node device 1 at light path.

Accepted to ask from the light path setting of optical node device 10 whether the light path configuration part 22 of the optical node device 11 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 11.The 3R relay implementation judging part 21 of optical node device 11 is with reference to the 3R block information shown in Figure 32 that keeps in the 3R block information maintaining part 20; Optical node device 11 will be implemented the 3R relaying being the 3R source node from the 3R interval of optical node device 11 to 13 on the descending light path so be judged as.

Moreover; 3R relay implementation judging part 21 knows that optical node device 11 is not the 3R source node on up light path; And UETR=1, UITR=12 have been sent from optical node device 10; If as the 3R destination node, then optical node device 12 is 3R source nodes with optical node device 1, on up light path, do not implement the 3R relaying so be judged as.

The light path configuration part 22 of optical node device 11 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 36; When seeing light path setting request (Path) off to optical node device 12, be that the DITR=11 of optical node device 13, DETR=13 this message carry on light path setting request in the 3R destination node that is 3R source node, this 3R interval on the descending light path with expression optical node device 11.In addition, optical node device 11 is not implemented the 3R relaying on up light path, sets in the request so will intactly carry from UETR=1, the UITR=12 that optical node device 10 is sent at light path.

Accepted to ask from the light path setting of optical node device 11 whether the light path configuration part 22 of the optical node device 12 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 12.The 3R relay implementation judging part 21 of optical node device 12 is with reference to the 3R block information shown in Figure 33 that keeps in the 3R block information maintaining part 20; Be judged as optical node device 12 on descending light path neither the 3R source node neither the 3R destination node, need not to implement the 3R relaying.

Moreover; 3R relay implementation judging part 21 is with reference to the 3R block information that keeps in the 3R block information maintaining part 20; And according to having sent UETR=1, UITR=12 from optical node device 11; Know that optical node device 12 is with the 3R source node of optical node device 1 as the 3R destination node, will implement the 3R relaying so be judged as on up light path on up light path.

The light path configuration part 22 of optical node device 12 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 36; When seeing light path setting request (Path) off to optical node device 13; Optical node device 12 is not implemented the 3R relaying on descending light path, set in the request so will intactly carry from DITR=11, the DETR=13 of optical node device 11 at light path.

In addition, optical node device 12 is the 3R source node on up light path, and also is as the 3R destination node under the situation of the 3R source node of up light path with optical node device 14.Therefore, UETR=12, UITR=14 are carried in light path setting request.

Accepted to ask from the light path setting of optical node device 12 whether the light path configuration part 22 of the optical node device 13 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 13.The 3R relay implementation judging part 21 of optical node device 13 is with reference to the 3R block information shown in Figure 34 that keeps in the 3R block information maintaining part 20; And sent DITR=11, DETR=13 from optical node device 12, known that optical node device 13 is 3R destination nodes of descending light path.

Here judge, be judged as optical node device 13 and will implement the 3R relaying according to " expression of accepting to comprise in the light path setting request oneself is the message of the 3R destination node on the descending light path; when oneself being not destination node; with reference to 3R block information maintaining part 20; when oneself not being the 3R source node on this descending light path; being judged as is the optical node device of implementing the 3R relaying as the 3R destination node as the 3R source node, with the optical node device of next jumping on the descending light path with own " this judgement policy.In addition, in the case, light path configuration part 22 generates DETR=14 as the message that is used for optical node device 14 to next jumping 3R destination node that to transmit these optical node devices 14 are optical node devices 13.In addition, optical node device 13 on up light path is judged as and does not implement the 3R relaying neither the 3R source node neither the 3R destination node.

The light path configuration part 22 of optical node device 13 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying; Shown in figure 36; When seeing light path setting request (Path) off to optical node device 14, be that the DITR=13 of optical node device 14, DETR=14 carry on light path setting request in the 3R destination node that is 3R source node, this 3R interval on the descending light path with expression optical node device 13.In addition, optical node device 13 is not implemented the 3R relaying on up light path, sets in the request so will intactly carry from UETR=12, the UITR=14 of optical node device 12 at light path.

Accepted to ask from the light path setting of optical node device 13 whether the light path configuration part 22 of the optical node device 14 of (Path) is the optical node devices that will implement the 3R relaying to 3R relay implementation judging part 21 inquiry optical node devices 14.The 3R relay implementation judging part 21 of optical node device 14 is with reference to the 3R block information shown in Figure 35 that keeps in the 3R block information maintaining part 20; Optical node device 14 is destination nodes; On descending light path, need not to implement the 3R relaying so be judged as; But on up light path, sent UETR=12, DITR=14 from optical node device 13, need be with optical node device 14 as the 3R source node, optical node device 12 be implemented the 3R relaying as the 3R destination node.

The light path configuration part 22 of optical node device 14 is accepted the judgement of 3R relay implementation judging part 21 and is preserved for the resource of light path setting and 3R relaying, and is shown in figure 36, sees light path off to optical node device 13 and sets completion notice (Resv).

optical node device

(the 7th embodiment)

Net control device and the optical node device of the 7th embodiment are described with reference to Figure 37 to Figure 40.Figure 37 is the net control device of the 7th embodiment and the schematic diagram of the relation between the optical node device.Figure 38 is the frame assumption diagram of the net control device of the 7th embodiment.Figure 39 be the 7th embodiment optical node device want portion's frame assumption diagram.Figure 40 is the sequence chart of the work of the 7th embodiment.

The net control device 40 of the 7th embodiment is shown in figure 37, have with each optical node device 1～14 in any function that all communicates each other, managing light net 50 concentratedly.Here, the management function relevant with the 3R block information in the management function that net control device 40 has is described.

That is, the net control device 40 of the 7th embodiment is characterised in that shown in figure 38, comprising: 3R block information database 41 keeps the 3R block information corresponding with the topology information of light net 50; With the 3R block information portion 43 is provided, the 3R block information that keeps in this 3R block information database 41 is offered this optical node device according to request from optical node device.

In addition; The 3R block information that is keeping in the 3R block information database 41 is the 3R block information that 3R block information collection portion 42 collects; When the 3R of light net 50 block information was updated, 3R block information collection portion 42 just upgraded the 3R block information that keeps in the 3R block information database 41.

The optical node device of the 7th embodiment is characterised in that; Shown in figure 39; Comprise: the net control device 40 of the light net 50 under the 3R block information request section 27, request management oneself provides the 3R block information corresponding with the topology information of this light net 50 and obtains this 3R block information.

The work of the 7th embodiment then, is described with reference to Figure 40.The 3R block information request section 27 of optical node device provides portion's 43 these optical node devices of request required 3R block information (step 1) to the 3R of net control device 40 block information.Here; The required 3R block information of so-called this optical node device; It is various: the 3R block information that is overall optical net 50; Or with via the relevant 3R block information of the light path of this optical node device; Or become the relevant 3R block information of light path of source node with this optical node device, or become the interval relevant 3R block information of 3R of 3R source node, or become the interval relevant 3R block information of 3R of 3R source node or 3R destination node with this optical node device with this optical node device; And the required 3R block information of 3R block information request section 27 these optical node devices of identification provides portion 43 these 3R block informations of request to the 3R of net control device 40 block information.The 3R block information of net control device 40 provides the information needed (step 2) of portion's 43 searching request.

The 3R block information provides portion 43 extracts the 3R block information from 3R block information database 41 information needed, and (step 3) sends it to the 3R block information request section 27 (step 4) of optical node device.27 inspections of 3R block information request section if be the information needed of request really, then hold it in (step 5) in the 3R block information maintaining part 20 from the 3R block information that net control device 40 transmits.

In the processing of the 7th embodiment, the 3R block information of net control device 40 provides portion's 43 search and extracts the processing burden maximum that information needed needs.

(the 8th embodiment)

Net control device and the optical node device of the 8th embodiment are described with reference to Figure 37, Figure 38, Figure 41, Figure 42.Figure 37 is the net control device of the 8th embodiment and the schematic diagram of the relation between the optical node device, and is public with the 7th embodiment.Figure 38 is the frame assumption diagram of the net control device of the 8th embodiment, and is public with the 7th embodiment.Figure 41 be the 8th embodiment optical node device want portion's frame assumption diagram.Figure 42 is the sequence chart of the work of the 8th embodiment.

The net control device 40 of the 8th embodiment is shown in figure 37, have with each optical node device 1～14 in any function that all communicates each other, managing light net 50 concentratedly.Here, the management function relevant with the 3R block information in the management function that net control device 40 has is described.

That is, the net control device 40 of the 8th embodiment is characterised in that shown in figure 38, comprising: 3R block information database 41 keeps the 3R block information corresponding with the topology information of light net 50; With the 3R block information portion 43 is provided, the 3R block information that keeps in this 3R block information database 41 is offered this optical node device according to request from optical node device.

The optical node device of the 8th embodiment is characterised in that; Shown in figure 41; Comprise: the net control device 40 of the light net 50 under the 3R block information request section 27, request management oneself provides the 3R block information corresponding with the topology information of this light net 50 and obtains this 3R block information; Comprise: Information Selection portion 30 is used for selecting and own relevant at least a portion information and maintenance from the 3R block information of obtaining.

The work of the 8th embodiment then, is described with reference to Figure 42.The 3R block information request section 27 of optical node device provides portion 43 request 3R block information (step 11) to the 3R of net control device 40 block information.At this moment, in the 8th embodiment, do not specify the information needed of this optical node device.

The 3R block information of net control device 40 provides portion 43 should ask intactly to be sent to 3R block information database 41 (step 12).The 3R block information provides portion 43 from 3R block information database 41, to extract the 3R block information, and (step 13) sends it to the Information Selection portion 30 (step 14) of optical node device.The required information of this optical node device is selected by Information Selection portion 30 from the 3R block information that net control device 40 transmits, abandon unwanted information (step 15).The information needed that generates is like this remained in the 3R block information maintaining part 20 (step 16).

The 8th embodiment compares with the 7th embodiment; In the frame structure of optical node device, added Information Selection portion 30; But need not provides portion 43 to select information needed with the 3R block information request section 27 of optical node device and the 3R block information of net control device 40, compares the processing burden that can reduce them with the 7th embodiment.

(the 9th embodiment)

The optical node device of the 9th embodiment is described with reference to Figure 43.Figure 43 be the 9th embodiment optical node device want portion's frame assumption diagram.The optical node device of the 9th embodiment is characterised in that; Shown in figure 43; Comprise: 3R block information request section 27, the corresponding 3R block information of topology information of the light net 50 under the net control device 40 of the light net 50 under the management oneself is asked and obtained with oneself; 3R block information maintaining part 20, the 3R block information that keeps this 3R block information request section 27 to obtain; And advertising department 28, give other optical node devices with the 3R block information advertisement that keeps in this 3R block information maintaining part 20.

For example; Under the situation of the public 3R block information of all optical node devices maintenances; Some 3R block informations of from net control device 40, obtaining in the optical node device 1～14; Give other optical node devices with it with advertising department's 28 advertisements, thereby can alleviate the processing burden of net control device 40.Perhaps; Optical node device more than 2 is obtained the 3R block information respectively from net control device 40; Give other optical node devices with its advertisement; Even thereby have under the situation of gaps and omissions at the 3R block information that some optical node devices are obtained, also can carry out replenishing each other to it, can keep the high 3R block information of reliability.

(the 10th embodiment)

The optical node device of the 10th embodiment is described with reference to Figure 44.Figure 44 be the 10th embodiment optical node device want portion's frame assumption diagram.The optical node device of the 10th embodiment is characterised in that; Shown in figure 44; Comprise: 3R block information request section 27, the corresponding 3R block information of topology information of the light net 50 when oneself is source node under the net control device 40 of the light net 50 under the management oneself is asked and obtained with oneself; 3R block information maintaining part 20, the 3R block information that keeps this 3R block information request section 27 to obtain; And transfer part 29, the 3R block information that keeps in this 3R block information maintaining part 20 is passed to own other optical node devices that comprise to the light path of destination node during as source node.

For example, be used for following situation: as the optical node device of the source node of light path to transmitting the 3R block information to other optical node devices that the path as the light path of the optical node device of destination node comprises from this optical node device.The 9th embodiment is to nonspecific target advertisement 3R block information, and the 10th embodiment transmits the 3R block information to specific objective.

(the 11st embodiment)

The optical node device of the 11st embodiment is described with reference to Figure 45.Figure 45 be the 11st embodiment optical node device want portion's frame assumption diagram.The optical node device of the 11st embodiment is characterised in that; Shown in figure 45; Comprise: 3R block information request section 27, the corresponding 3R block information of topology information of the light net 50 when oneself is source node under the net control device 40 of the light net 50 under the management oneself is asked and obtained with oneself; 3R block information maintaining part 20, the 3R block information that keeps this 3R block information request section 27 to obtain; And advertising department 28, give other optical node devices with the 3R block information advertisement that this 3R block information maintaining part 20 keeps; Be provided with the advertisement of judging advertising department 28 and whether be and the Information Selection portion 30 of the related advertisement of light path via oneself; This Information Selection portion 30 is to abandon advertisement with via oneself the irrespective advertisement of light path the time in advertisement, is ad content to be remained in the 3R block information maintaining part 20 with via oneself the related advertisement of light path the time in advertisement.

In the 10th embodiment, transfer part 29 need be transmitted the 3R block information to specific objective, and in the 11st embodiment, advertising department 30 gets final product to nonspecific target advertisement 3R block information, so can save the processing burden of objective management.Moreover the enough Information Selection of ability portion 30 abandons and the irrespective 3R block information of this optical node device, so can effectively utilize the information stores resource of 3R block information maintaining part 20.

(the 12nd embodiment)

The optical node device of the 12nd embodiment is described with reference to Fig. 4 and Figure 46.Fig. 4 be the 12nd embodiment optical node device want portion's frame assumption diagram, public with the 1st embodiment.Figure 46 is the key diagram of the 3R relay implementation node determination methods of the 12nd embodiment.The optical node device of the 12nd embodiment is characterised in that, and is as shown in Figure 4, comprising: 3R block information maintaining part 20 keeps the information of the jumping figure H between the own and 3R destination node on the 3R interval under own; With 3R relay implementation judging part 21, judge independently whether oneself will implement the 3R relaying to the light signal that the 3R source node on the 3R interval under oneself is seen off; Establish the 3R trunk line number that oneself comprises be the threshold value of T, idle 3R trunk line number be TH_T, when the threshold value of the jumping figure of 3R destination node is TH_H, if

T＞TH_T and H＜TH_H

Then this 3R relay implementation judging part 21 is judged as and will implements the 3R relaying.

Shown in figure 46; With optical node device 1 as the 3R source node, with optical node device 3 as the 3R destination node, when supposing that optical node device 2 is between

optical node device

1 and 3; Optical node device 2 is the optical node devices of " to interval via a plurality of different 3R that comprises repeating part on the light path of an optical node device; this optical node device is the 3R source node on some 3R interval, on other 3R intervals, does not serve as 3R source node or 3R destination node ".

In this case; Among the embodiment before the 12nd embodiment; Explained 3R relay implementation judging part 21 usefulness 3R implement simulation part 23 and comparison portion 24 " the 3R enforcement number of times under the situation both of these case of reference and the situation of the effect that comes a more above-mentioned optical node device 3R source node from an above-mentioned optical node device to the related 3R block information of the light path of destination node and the function of 3R source node not; the situation 3R enforcement number of times that the situation that plays the 3R source node according to its comparative result at an above-mentioned optical node device does not play the 3R source node than an above-mentioned optical node device after a little while, determine for an above-mentioned optical node device be the optical node device that will implement the 3R relaying ".

And in the 12nd embodiment, use than the simpler method of simulation to judge whether to implement the 3R relaying.That is, if

T＞TH_T and H＜TH_H

Then be judged as and implement the 3R relaying.

Promptly; In the optical node device on the path of certain light path; This optical node device be on some 3R interval the 3R source node, when having the 3R trunk line; The 3R trunk line number of this optical node device enough allowances are arranged and to the 3R destination node of this light path, be under the few situation of the jumping figure of the interval 3R source node of next 3R, being judged as this optical node device, to implement the 3R relaying better.Thus, can alleviate the 3R relaying burden of the interval 3R source node of next 3R.

Optical node device before such 3R destination node has been implemented under the situation of 3R relaying for the 3R destination node, and the message of representing this meaning is passed to the 3R destination node.Thus, original 3R destination node identifies own optical node device with skip before for oneself having implemented the 3R relaying, and the light signal of the arrival that should implement the 3R relaying is not originally carried out intactly exchanging then among the 3R connection.Wherein, in the case, change to application reality have been implemented the optical node device of 3R relaying interval as the 3R of 3R source node from the 3R interval of predetermined application originally.

Then, explain the threshold value TH_T that sets idle 3R trunk line number, to the policy of the threshold value TH_H of the jumping figure of 3R destination node.The 3R trunk line number of the 3R source node that next 3R is interval is compared few more with the 3R trunk line number of this optical node device; Then the necessity of the 3R relaying of the 3R source node in next 3R interval of this optical node device assistance is big more; So preferably set TH_T little; If in the 3R of this optical node device trunk line, produce the free time a little, then this optical node device is just implemented the 3R relaying that the 3R relaying is helped the interval 3R source node of next 3R.But; Even if under the big situation of the jumping figure of the interval 3R source node of next 3R; The 3R trunk line number of this optical node device has allowance, and this optical node device is also implemented the 3R relaying for the interval 3R source node of next 3R, and then the 3R enforcement number of times to destination node might increase.Therefore, TH_H is preferably little.

(the 13rd embodiment)

The Fig. 4 that explained among reference the 1st embodiment and Figure 47 and Figure 48 explain the optical node device of the 13rd embodiment.The optical node device of present embodiment want portion's frame assumption diagram and the 1st embodiment same, as shown in Figure 4.But the function of each one of formation optical node device is different with the 1st embodiment.Figure 47 is the key diagram of the 3R relay implementation node determination methods of present embodiment.Figure 48 is the key diagram of work of the optical node device of the 13rd and the 14th embodiment.

Set in the request at light path, be included in the label of specifying the wavelength that uses successively from source node when exchange from the source node to the destination node connects, wavelength of every use is just deleted this label.

Exchange connection according on the light path from the source node to the destination node, exchanging this policy of connection with few number of wavelengths of trying one's best.That is, from the source node to the destination node, link preferably, only on the way do not exist under the situation of idle wavelength and just carry out wavelength conversion, use other wavelength with wavelength.The wavelength conversion trunk line is used for the wavelength conversion that this exchange connects, and through wavelength conversion light signal temporarily is transformed to the signal of telecommunication, is transformed to light signal once more, so the 3R relaying also carries out simultaneously.In addition, need implement at the position that need not wavelength conversion under the situation of 3R relaying, use the wavelength conversion trunk line to carry out the wavelength conversion that input and output are same wavelength.

In addition; Method as the wavelength that uses between decision is from the source node to the destination node; Topology information according to the light net; The wavelength behaviour in service of the light net that reference changes is at any time set up the wavelength conversion scheme from the source node to the destination node, and the label lift-launch of the wavelength of representing to use is set in the request at the light path from source node.

Optical node device in the way judges with reference to this label whether this optical node device will implement wavelength conversion, implements at needs to keep the wavelength conversion resource of this optical node device under the situation of wavelength conversion.Wherein, will carry out under the situation of wavelength conversion at this optical node device, the deletion light path is set request and is gone up the suitable label of the wavelength with wanting conversion that carries and see light path off to the adjacent light node device of next jumping and set and ask.

In the present embodiment; Explanation is keeping required information in 3R block information maintaining part 20; But also can adopt following structure: the outer net control device of figure is keeping required information; When source node will send light path setting request, from net control device, obtain required information, set up the wavelength conversion scheme.

That is, the optical node device of present embodiment is characterised in that, and is as shown in Figure 4, comprising: 3R block information maintaining part 20 keeps the information of the jumping figure H between the own and 3R destination node on the 3R interval under own; With 3R relay implementation judging part 21, judge independently whether oneself will implement the 3R relaying to the light signal that the 3R source node on the 3R interval under oneself is seen off; Establishing the wavelength conversion trunk line number that oneself comprises is that the threshold value of T, idle 3R trunk line number is TH_T, is that TH_H, remaining number of tags are the threshold value of L, remaining number of tags when being TH_L to the threshold value of the jumping figure of 3R destination node, if

T＞TH_T and (H＜TH_H and L＜TH_L)

Then this 3R relay implementation judging part 21 is judged as and will implements the 3R relaying.Wherein, oneself belonging to destination node as the 3R of 3R destination node when interval, 3R relay implementation judging part 21 is judged as oneself and does not implement the 3R relaying.

The work of the optical node device of the 13rd embodiment then, is described with reference to Figure 47 and Figure 48.Shown in figure 47, each optical node device comprises exchange portion 130 and a plurality of wavelength conversion trunk line 140 that is used to exchange the connection light signal.In the example of Figure 48, from source node--optical node device #1 is to destination node--set light path the optical node device #10.

The 3R interval of setting on this light path is: with optical node device #1 as the 3R source node, with the interval of optical node device #5 as the 3R destination node; With optical node device #2 as the 3R source node, with the interval of optical node device #5 as the 3R destination node; With optical node device #4 as the 3R source node, with the interval of optical node device #7 as the 3R destination node; With optical node device #5 as the 3R source node, with the interval of optical node device #8 as the 3R destination node; With optical node device #7 as 3R source node, optical node device #10 is interval as the 3R of 3R destination node; With optical node device #8 as 3R source node, optical node device #10 is interval as the 3R of 3R destination node, with optical node device #9 as 3R source node, optical node device #10 is interval as the 3R of 3R destination node.

In addition, the wavelength conversion trunk line number that each optical node device has is: optical node device #1, #2, #3, #4, #5, #6, #7, #9 are respectively 5, and optical node device #8, #10 are respectively 10.

Here; Source node is made as optical node device #1, destination node is made as under the situation of light path of optical node device #10 setting; In order to make 3R implement least number of times, it is interval that the 3R destination node when the 3R destination node when preferably relaying is the 3R source node with optical node device #1 is made as that optical node device #5, the 3R destination node when optical node device #5 is the 3R source node are made as optical node device #8 and optical node device #8 is the 3R source node is made as the 3R of optical node device #10.

See light path from optical node device #1 off to optical node device #2 and set request.Set in the request at this light path, carrying a plurality of labels (set of tags) of representing wavelength conversion required in the path way.In the example of Figure 48, use wavelength X 1 between optical node device #1 and the optical node device #3, use label L1.Use wavelength X 2 between optical node device #3 and the optical node device #5, use label L2.Use wavelength X 3 between optical node device #5 and the optical node device #7, use label L3.Use wavelength X 4 between optical node device #7 and the optical node device #10, use label L4.

Optical node device #1 is a source node, is the 3R source node, will implement the 3R relaying from the beginning so be judged as.

Accepted to identify oneself and can enough wavelength X 1 set light path, be judged as and will use label L1 (λ 1) to set light path from the optical node device #2 that the light path setting of optical node device #1 is asked, and according to

T＞TH_T and (H＜TH_H and L＜TH_L)

Judge whether to implement the 3R relaying.Here, establish TH_T=4, TH_H=2, TH_L=1.

The wavelength conversion trunk line number of optical node device 2 is 5, so satisfy

T＞TH_T。

Then, from optical node device #2 to the 3R destination node--optical node device #5 3 jumps, so do not satisfy

H＜TH_H。

Therefore, be judged as optical node device #2 and do not implement the 3R relaying.

Accepted to identify oneself and can not set light path, be judged as and use label L2 (λ 2) to set light path with wavelength X 1 from the optical node device #3 that the light path setting of optical node device #2 is asked.In addition, oneself is not the 3R source node, does not implement the 3R relaying from the beginning so be judged as.

Accepted to identify oneself and can enough wavelength X 2 set light path, be judged as and will use label L2 (λ 2) to set light path from the optical node device #4 that the light path setting of optical node device #3 is asked, and according to

T＞TH_T and (H＜TH_H and L＜TH_L)

Judge whether to implement the 3R relaying.The wavelength conversion trunk line number of optical node device #4 is 5, so satisfy

T＞TH_T。

Then, from optical node device #4 to the 3R destination node--optical node device #5 1 jumps, so satisfy

H＜TH_H。

Then, optical node device #4 uses label L2, so remaining number of tags is these 2 pieces of L3 and L4, does not satisfy

L＜TH_L。

Therefore, be judged as optical node device #4 and do not implement the 3R relaying.

Accepted to identify oneself and can not set light path, be judged as and use label L3 (λ 3) to set light path with wavelength X 2 from the optical node device #5 that the light path setting of optical node device #4 is asked.In addition; Optical node device #5 is the 3R destination node during as the 3R source node with optical node device #1; So be the interval 3R source node of next 3R; Moreover the optical node device #2 with skip before, #3, the #4 that identify oneself do not take over the 3R relaying, are judged as optical node device #5 and will implement the 3R relaying from the beginning.

Accepted to identify oneself and can enough wavelength X 3 set light path, be judged as and use label L3 (λ 3) to set light path from the optical node device #6 that the light path setting of optical node device #5 is asked.In addition, oneself is not the 3R source node, does not implement the 3R relaying from the beginning so be judged as.

Accepted to identify oneself and can not set light path, be judged as and will use label L4 (λ 4) to set light path with wavelength X 3 from the optical node device #7 that the light path setting of optical node device #6 is asked, and according to

T＞TH_T and (H＜TH_H and L＜TH_L)

Judge whether to implement the 3R relaying.The wavelength conversion trunk line number of optical node device #7 is 5, so satisfy

T＞TH_T。

Then, from optical node device #7 to the 3R destination node--optical node device #8 1 jumps, so satisfy

H＜TH_H。

Then, optical node device #7 uses label L4, so remaining number of tags is 0 piece, satisfies

L＜TH_L。

Therefore, be judged as optical node device #7 and will implement the 3R relaying.In addition, expression optical node device #7 to be passed to other optical node devices for the message of optical node device #8 enforcement 3R relaying.

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and use label L4 (λ 4) to set light path from the optical node device #8 that the light path setting of optical node device #7 is asked.In addition; Optical node device #8 is the 3R destination node during as the 3R source node with optical node device #5; Originally to implement the 3R relaying, but accept to represent from optical node device #7 that optical node device #7 will implement the message of 3R relaying for oneself, and be judged as and do not implement the 3R relaying.

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and use label L4 (λ 4) to set light path from the optical node device #9 that the light path setting of optical node device #8 is asked.In addition, optical node device #9 is the 3R source node, but next jumping is a destination node, destination node, is judged as oneself and does not implement the 3R relaying when interval as the 3R of 3R destination node oneself belonging to, and does not implement the 3R relaying so be judged as optical node device #9.

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and use label L4 (λ 4) to set light path from the optical node device #10 that the light path setting of optical node device #9 is asked.In addition, optical node device #10 is a destination node, does not implement the 3R relaying so be judged as.

Thus, implemented the 3R relaying with optical node device #1, #5, #7.Optical node device #7 has taken over the 3R relaying of optical node device #8.

(the 14th embodiment)

The work of the optical node device of explanation the 14th embodiment below.Wherein, the optical node device of the 14th embodiment wants portion's frame assumption diagram and the 13rd embodiment shown in Figure 4 public.In addition, the key diagram of the work of the optical node device of the 14th embodiment and the 13rd embodiment shown in Figure 48 are public.

In the example of Figure 48, from source node--optical node device #1 is to destination node--set light path the optical node device #10.The 3R interval of setting on this light path is: with optical node device #1 as the 3R source node, with the interval of optical node device #5 as the 3R destination node; With optical node device #2 as the 3R source node, with the interval of optical node device #5 as the 3R destination node; With optical node device #4 as the 3R source node, with the interval of optical node device #7 as the 3R destination node; With optical node device #5 as the 3R source node, with the interval of optical node device #8 as the 3R destination node; With optical node device #7 as 3R source node, optical node device #10 is interval as the 3R of 3R destination node; With optical node device #8 as 3R source node, optical node device #10 is interval as the 3R of 3R destination node, with optical node device #9 as 3R source node, optical node device #10 is interval as the 3R of 3R destination node.

Optical node device #1 is a source node, is the 3R source node, will implement the 3R relaying so be judged as.

T＞TH_T and (H＜TH_H or L＜TH_L)

The wavelength conversion trunk line number of optical node device #2 is 5, so satisfy

T＞TH_T。

Then, to the 3R destination node--optical node device #5 is 3 jumpings, so do not satisfy

H＜TH_H。

Then, remaining number of tags is these 3 pieces of L2, L 3, L4, so do not satisfy

L＜TH_L。

T＞TH_T and (H＜TH_H or L＜TH_L)

T＞TH_T。

H＜TH_H。

Therefore, be judged as optical node device #4 and will implement the 3R relaying.In addition, optical node device #4 will indicate to pass to other optical node devices for the message of optical node device #5 enforcement 3R relaying.

Accepted to identify oneself and can enough wavelength X 3 set light path, be judged as and use label L3 (λ 3) to set light path from the optical node device #5 that the light path setting of optical node device #4 is asked.In addition; Optical node device #5 is the 3R destination node during as the 3R source node with optical node device #1; Originally to implement the 3R relaying, but accept to represent from optical node device #4 that optical node device #4 will implement the message of 3R relaying for oneself, and be judged as and do not implement the 3R relaying.

Accepted to identify oneself and can not set light path with wavelength X 3 from the optical node device #7 that the light path setting of optical node device #6 is asked; Be judged as and use label L4 (λ 4) to set light path; And having accepted expression optical node device #4 replaces optical node device #5 to implement the message of 3 relayings; Know if optical node device #4 is the 3R source node; Then optical node device #7 is the 3R destination node, and is the interval 3R source node of next 3R, will implement the 3R relaying so be judged as optical node device #7.In addition, optical node device #7 will represent that the message that oneself will implement the 3R relaying passes to other optical node devices.

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and use label L4 (λ 4) to set light path from the optical node device #8 that the light path setting of optical node device #7 is asked.In addition; Accepted to represent that from optical node device #7 optical node device #7 will implement the message of 3R relaying; Identify and belong to optical node device #7, be judged as and do not implement the 3R relaying from the beginning as the 3R source node, with in the 3R interval of optical node device #10 as the 3R destination node.

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and use label L4 (λ 4) to set light path from the optical node device #9 that the light path setting of optical node device #8 is asked.In addition; Accepted to represent that from optical node device #7 optical node device #7 will implement the message of 3R relaying; Identify and belong to optical node device #7, be judged as and do not implement the 3R relaying from the beginning as the 3R source node, with in the 3R interval of optical node device #10 as the 3R destination node.

Thus, implemented the 3R relaying with optical node device #1, #4, #7.Optical node device #4 has taken over optical node device #5.

(the 15th embodiment)

The work of the optical node device of the 15th embodiment is described with reference to Figure 49.Figure 49 is the key diagram of work of the optical node device of the 15th and the 16th embodiment.The 15th embodiment is the embodiment in bi-directional light path.This viewpoint from the bi-directional light path in the 13rd embodiment, has been explained the embodiment of descending light path.Therefore, in the 15th embodiment, the embodiment of up light path is described.Therefore, when actual set bi-directional light path, the process that will explain among process of roughly explaining among while executed in parallel the 13rd embodiment and the 15th embodiment.

The 3R interval of setting on the up light path shown in Figure 49 is: with optical node device #10 as the 3R source node, with the interval of optical node device #6 as the 3R destination node; With optical node device #9 as the 3R source node, with the interval of optical node device #6 as the 3R destination node; With optical node device #7 as the 3R source node, with the interval of optical node device #4 as the 3R destination node; With optical node device #6 as the 3R source node, with the interval of optical node device #3 as the 3R destination node; With optical node device #4 as 3R source node, optical node device #1 is interval as the 3R of 3R destination node; With optical node device #3 as 3R source node, optical node device #1 is interval as the 3R of 3R destination node, with optical node device #2 as 3R source node, optical node device #1 is interval as the 3R of 3R destination node.

Here; Source node is made as optical node device #1, destination node is made as under the situation of up light path of optical node device #10 setting; In order to make 3R implement least number of times, it is interval that the 3R destination node when the 3R destination node when preferably relaying is the 3R source node with optical node device #10 is made as that optical node device #6, the 3R destination node when optical node device #6 is the 3R source node are made as optical node device #3 and optical node device #3 is the 3R source node is made as the 3R of optical node device #1.

See light path from optical node device #1 off to optical node device #2 and set request.Set in the request at this light path, carrying a plurality of labels (set of tags) of representing wavelength conversion required in the path way.In the example of Figure 49, use wavelength X 1 between optical node device #1 and the optical node device #3, use label L1.Use wavelength X 2 between optical node device #3 and the optical node device #5, use label L2.Use wavelength X 3 between optical node device #5 and the optical node device #7, use label L3.Use wavelength X 4 between optical node device #7 and the optical node device #10, use label L4.

Optical node device #1 is a source node, is the 3R destination node on the up light path, does not implement the 3R relaying so be judged as.

Accepted to identify oneself and can enough wavelength X 1 set light path, be judged as and use label L1 (λ 1) to set light path from the optical node device #2 that the light path setting of optical node device #1 is asked.In addition, on up light path, oneself belonging to optical node device #3 is that 3R source node, optical node device #1 are the 3R intervals of 3R destination node, does not implement the 3R relaying so be judged as optical node device #2.

Accepted to identify oneself and can not set light path, be judged as and use label L2 (λ 2) to set light path with wavelength X 1 from the optical node device #3 that the light path setting of optical node device #2 is asked.In addition, oneself be the 3R source node on the up light path of being scheduled to, to implement the 3R relaying so be judged as.

Accepted to identify oneself and can enough wavelength X 2 set light path, be judged as and will use label L2 (λ 2) to set light path, and be the 3R source node from the optical node device #4 that the light path setting of optical node device #3 is asked, so according to

T＞TH_T and (H＜TH_H and L＞TH_L)

Judge whether to implement the 3R relaying.Wherein, TH_T=4, TH_H=2, TH_L=1.The wavelength conversion trunk line number of optical node device #4 is 5, so satisfy

T＞TH_T。

Then, the 3R destination node on from optical node device #4 to up light path--optical node device #3 1 jumps, so satisfy

H＜TH_H。

Then, optical node device #4 uses label L2, so remaining number of tags is these 2 pieces of L3 and L4, satisfies

L＞TH_L。

Therefore, be judged as optical node device #4 and will implement the 3R relaying.This judged result is delivered to optical node device #3.

After optical node device #3 had accepted this transmission from optical node device #4, that recalls previous decision oneself will implement this judgement of 3R relaying.

Accepted to identify oneself and can not set light path, be judged as and use label L3 (λ 3) to set light path with wavelength X 2 from the optical node device #5 that the light path setting of optical node device #4 is asked.In addition, optical node device #5 is not the 3R source node, does not implement the 3R relaying from the beginning so be judged as.

Accepted to identify oneself and can enough wavelength X 3 set light path, be judged as and use label L3 (λ 3) to set light path from the optical node device #6 that the light path setting of optical node device #5 is asked.In addition, oneself be the 3R source node on the up light path of being scheduled to, will implement the 3R relaying so be judged as from the beginning.

T＞TH_T and (H＜TH_H and L＞TH_L)

T＞TH_T。

Then, from optical node device #7 to the 3R destination node--optical node device #6 1 jumps, so satisfy

H＜TH_H。

Then, optical node device #7 uses label L4, so remaining number of tags is 0 piece, does not satisfy

L＞TH_L。

Therefore, be judged as optical node device #7 and do not implement the 3R relaying.

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and use label L4 (λ 4) to set light path from the optical node device #8 that the light path setting of optical node device #7 is asked.In addition, optical node device #8 is not the 3R source node, does not implement the 3R relaying from the beginning so be judged as.

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and will use label L4 (λ 4) to set light path from the optical node device #9 that the light path setting of optical node device #8 is asked, and according to

T＞TH_T and (H＜TH_H and L＞TH_L)

Judge whether to implement the 3R relaying.The wavelength conversion trunk line number of optical node device #9 is 5, so satisfy

T＞TH_T。

Then, from optical node device #9 to the 3R destination node--optical node device #6 3 jumps, so do not satisfy

H＜TH_H。

Accepted to identify oneself and can enough wavelength X 4 set light path, be judged as and use label L4 (λ 4) to set light path from the optical node device #10 that the light path setting of optical node device #9 is asked.In addition, optical node device #10 is a destination node, on up light path, is the 3R source node, will implement the 3R relaying so be judged as.

Thus, implemented the 3R relaying with optical node device #4, #6, #10.Optical node device #4 has taken over the 3R relaying of optical node device #3.

(the 16th embodiment)

The work of the optical node device of the 16th embodiment is described with reference to Figure 49.The 16th embodiment is the embodiment in bi-directional light path.This viewpoint from the bi-directional light path in the 14th embodiment, has been explained the embodiment of descending light path.Therefore, in the 16th embodiment, the embodiment of up light path is described.Therefore, when actual set bi-directional light path, the process that will explain among process of roughly explaining among while executed in parallel the 14th embodiment and the 16th embodiment.

T＞TH_T and (H＜TH_H or L＞TH_L)

T＞TH_T。

H＜TH_H。

T＞TH_T and (H＜TH_H or L＞TH_L)

T＞TH_T。

H＜TH_H。

Therefore, be judged as optical node device #7 and will implement the 3R relaying.This judged result is delivered to optical node device #6.

After optical node device #6 had accepted this transmission from optical node device #7, that recalls previous decision oneself will implement this judgement of 3R relaying.

T＞TH_T and (H＜TH_H or L＞TH_L)

T＞TH_T。

H＜TH_H。

Then, remaining number of tags is 0, so do not satisfy

L＞TH_L。

Therefore, be judged as optical node device #9 and do not implement the 3R relaying.

Thus, implemented the 3R relaying with optical node device #4, #7, #10.Optical node device #4 has taken over optical node device #3 and has implemented the 3R relaying, and optical node device #7 takes over the 3R relaying of optical node device #6.

(the 17th embodiment)

The optical node device of the 17th embodiment is described with reference to Figure 50 to Figure 52.Figure 50 and Figure 52 are the key diagrams of wanting portion's frame structure and work of the optical node device of the 17th embodiment.Figure 51 is the frame assumption diagram of actual measurement portion.The optical node device of the 17th embodiment is characterised in that, and is shown in figure 50, comprising: actual measurement portion 218, detect the degradation mode of the light signal that arrives oneself; Control system 217 is when detecting signal degradation in the testing result of this actual measurement portion 218, and the 3R relay request is notified to the adjacent light node device suitable with the previous dive of oneself; And 3R relay 224, when the above-mentioned 3R relay request of oneself having accepted from the control system 217 of the adjacent light node device of next jumping, the light signal that arrives oneself is implemented the 3R relaying.

Wherein, actual measurement portion 218 comes the optical noise and the luminous intensity of measured light signal respectively with optical noise observation portion 225 and luminous intensity observation portion 226 shown in Figure 51.This measured result is gathered by measured data generation portion 231.Wherein, the actual measurement portion 218 of other embodiment also is same structure.

The work of the optical node device of the 17th embodiment then, is described.The optical node device of the 17th embodiment is input to actual measurement portion 218 with the light signal branch of transmitting on this light path when having set via oneself light path, observe its signal degradation state.Now, suppose to detect with optical node device #4 the deterioration of light signal, then optical node device #4 is to optical node device #3 request 3R relaying.The optical node device #3 that has accepted this request will implement the 3R relaying via the light path guiding 3R relay 224 of oneself.

So far the explanation of the 17th embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of up light path with reference to Figure 52.The optical node device of the 17th embodiment is characterised in that, shown in Figure 52, comprising: actual measurement portion 218, the degradation mode of the light signal of the up light path of detection arrival oneself; Control system 217 is when detecting signal degradation in the testing result of this actual measurement portion 218, sees the request of 3R relay implementation off to jumping suitable adjacent light node device with oneself next; And 3R relay 224, when the 3R relay implementation request of oneself having accepted from the control system 217 of the adjacent light node device of previous dive, the light signal that arrives oneself is implemented the 3R relaying.

The work of the optical node device of the 17th embodiment then, is described.The optical node device of the 17th embodiment is input to actual measurement portion 218 with the light signal branch of transmitting on this up light path when having set via oneself up light path, observe its signal degradation state.Now, suppose to detect with optical node device #1 the deterioration of light signal, then optical node device #1 sees the request of 3R relay implementation off to optical node device #2.The optical node device #2 that has accepted this 3R relay implementation request will implement the 3R relaying via the up light path guiding 3R relay 224 of oneself.

The situation that predefined like this 3R interval changes is described below.For example, in an optical node device, set under the situation of many new light paths, the light path of having established sometimes receives that the influence of the light path of newly establishing causes crosstalks or noise that nonlinear effect etc. causes, and in this case, the 3R interval changes.In the 17th embodiment, can tackle the interval variation of this 3R flexibly.

Wherein, If each optical node device has 3R relay 224 respectively, then can worry and compared whether can effectively utilize Internet resources in the past, but be that all optical node devices carry out the 3R relaying comparably in the past; And in the 17th embodiment; The optical node device of only selecting carries out the 3R relaying, and 3R relaying burden is dispersed to a plurality of optical node devices, so can effectively utilize Internet resources.

That is, the 3R relay 224 of each optical node device gets final product carrying out the 3R relaying via the part of light path of oneself following of nearly all situation.And the 3R relay 224 of each optical node device need be carried out the 3R relaying to the whole light paths via oneself in the past.Therefore, 3R relay 224 can the in the past little scale of enough ratios be dealt with, so can effectively utilize Internet resources and reduce cost.

(the 18th embodiment)

The optical node device of the 18th embodiment is described with reference to Figure 53 to Figure 55.Figure 53 is the frame assumption diagram that the output of the 18th embodiment comprises the optical node device of optical switch portion.Figure 54 is the frame assumption diagram that the input of the 18th embodiment comprises the optical node device of optical switch portion.Figure 55 is the frame assumption diagram of the optical node device that comprises relaying line style 3R relay of the 18th embodiment.

The optical node device of the 18th embodiment comprises: actual measurement portion 218, and detection arrives the degradation mode of the light signal of oneself; With 3R relay 224, be when detecting signal degradation the light signal that arrives oneself to be implemented the 3R relaying in the testing result of this actual measurement portion 218.

The work of the optical node device of the 18th embodiment then, is described.Optical node device shown in Figure 53 passes to control system 217 with its testing result detect the deterioration of light signal of input in actual measurement portion 218 after.Control system 217 is sent indication to selector 227, and the light signal of importing is connected to 3R relay 224.Thus, implemented the light signal of 3R relaying to 228 inputs of optical switch portion via 3R relay 224.

Optical node device shown in Figure 54 passes to control system 217 with its testing result after detecting the deterioration of the light signal of exporting from optical switch portion 228 in actual measurement portion 218.Control system 217 is sent indication to selector 227, and the light signal of importing is connected to 3R relay 224.Thus, implemented the light signal of 3R relaying via 224 outputs of 3R relay.

Optical node device shown in Figure 55 passes to control system 217 with its testing result detect the deterioration of light signal of input in actual measurement portion 218 after.Control system 217 is sent indication to optical switch portion 228, and the light signal of importing is connected to 3R relay 224.Thus, the light signal of the 3R relaying being crossed via 3R relay 224 from the light signal of optical switch portion 228 temporary transient outputs is input to optical switch portion 228 once more.The light signal that the 3R relaying is crossed by optical switch portion 228 exchanges to the purpose direction.

So far the explanation of the 18th embodiment is the explanation of having imagined the descending light path in unidirectional light path or bi-directional light path; But a type release easily also can the same process of enough and descending light path generate the 3R block information to up light path, so detailed.

That is, the optical node device of the 18th embodiment is characterised in that, comprising: actual measurement portion 218, and detection arrives the degradation mode of the uplink optical signal of oneself; With 3R relay 224, be when detecting signal degradation the uplink optical signal that arrives oneself to be implemented the 3R relaying in the testing result of this actual measurement portion 218.

(the 19th embodiment)

The optical node device of the 19th embodiment is described with reference to Figure 56 to Figure 59.Figure 56 and Figure 58 are the schematic diagrams that the 3R block information in the optical node device of the 19th embodiment is collected.Figure 57 and Figure 59 are the figure of the 3R block information collection process in the optical node device of the 19th embodiment.

The optical node device exchange of the 19th embodiment connects light signal; Successively other optical node devices that the path from own to destination node comprises are set light path from the adjacent light node device hop-by-hop of next jumping; It is characterized in that; Shown in Figure 56; In 3R relay implementation judging part 229, comprise: see parts off, when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths, see test off and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And request parts; When accepting above-mentioned above-mentioned test of reporting the result that parts the receive impaired condition with light signal based on this and satisfy the impaired condition of regulation, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end are implemented the 3R relaying; Above-mentioned other optical node devices of being implemented this 3R relaying by request comprise in 3R relay implementation judging part 229: see parts off, see test off when other optical node devices that successively path to the above-mentioned purpose node comprised whenever the adjacent light node device hop-by-hop from next jumping are set light paths and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And request parts; When accepting above-mentioned above-mentioned test of reporting the result that parts the receive impaired condition with light signal based on this and satisfy the impaired condition of regulation, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end are implemented the 3R relaying.In fact, in each optical node device, comprise 3R relay implementation judging part 229, when oneself becoming source node or 3R source node, start above-mentioned each functions of components.

The work of the optical node device of the 19th embodiment then, is described.3R relay implementation request process shown in Figure 57 is carried out by 3R relay implementation judging part 229.Here, while with optical node device #1 be the 3R source node, setting light path, to ask to implement the process of 3R relaying be that example describes.Shown in Figure 57, the optical node device #2 that jump the own back 1 of 3R relay implementation judging part 229 contrasts of optical node device #1 sets light path (step 101, step 102).In Figure 56, optical node device #1 sets request (PATH) with light path and passes out to optical node device #2.After optical node device #2 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1.Between optical node device #1 and #2, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 103) to the light path of setting, reception from the test of optical node device #2 with optical signal deterioration status report (RESULT) (step 104).From the test of optical node device #2 with the optical signal deterioration status report in, do not detect deterioration (step 105), so the optical node device #3 that jump the own back 2 of optical node device #1 contrast sets light path (step 106, step 102).In Figure 56, optical node device #1 sets request (PATH) with light path and passes out to optical node device #3 via optical node device #2.After optical node device #3 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #2.Between optical node device #1 and #3, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 103) to the light path of setting, reception from the test of optical node device #3 with optical signal deterioration status report (RESULT) (step 104).From the test of optical node device #3 with the optical signal deterioration status report in, do not detect deterioration (step 105), so the optical node device #4 that jump the own back 3 of optical node device #1 contrast sets light path (step 106, step 102).In Figure 56, optical node device #1 sets request (PATH) with light path and passes out to optical node device #4 via optical node device #2 and #3.After optical node device #4 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #3 and #2.Between optical node device #1 and #4, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 103) to the light path of setting, reception from the test of optical node device #4 with optical signal deterioration status report (RESULT) (step 104).From the test of optical node device #4 with the optical signal deterioration status report in, do not detect deterioration (step 105), so the optical node device #5 that jump the own back 4 of optical node device #1 contrast sets light path (step 106, step 102).In Figure 56, optical node device #1 sets request (PATH) with light path and passes out to optical node device #5 via optical node device #2, #3, #4.After optical node device #5 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #4, #3, #2.Between optical node device #1 and #5, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 103) to the light path of setting, reception from the test of optical node device #5 with optical signal deterioration status report (RESULT) (step 104).From the test of optical node device #5 with the optical signal deterioration status report in, do not detect deterioration (step 105), so the optical node device #6 that jump the own back 5 of optical node device #1 contrast sets light path (step 106, step 102).In Figure 56, optical node device #1 sets request (PATH) with light path and passes out to optical node device #6 via optical node device #2, #3, #4, #5.After optical node device #6 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #5, #4, #3, #2.Between optical node device #1 and #6, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 103) to the light path of setting, reception from the test of optical node device #6 with optical signal deterioration status report (RESULT) (step 104).From the test of optical node device #6 with the optical signal deterioration status report in, detect deterioration (step 105), so the optical node device #5 that request is jumped than own back 4 implements 3R relaying (step 107).After optical node device #5 has accepted the 3R relay implementation request from optical node device #1, promise to undertake to optical node device #1 acknowledges requests.

In addition, optical node device #5 has accepted the 3R relay implementation request (step 108) from optical node device #1, and identifying oneself is the 3R source node, the process that execution in step 101 is later.In addition, optical node device #1 request optical node device #5 implements the 3R relaying, owing to do not receive 3R relay implementation request from other optical node devices, so end process.

Like this, in the 19th embodiment, in the process of setting light path, can determine to implement the optical node device of 3R relaying.In the example of Figure 56, in each optical node device #1～#7, all comprise 3R relay implementation judging part 229 respectively, but for example also can whenever comprise a 3R relay implementation judging part 229 at a distance from an optical node device.In addition, in the present embodiment, understand easily in order to make explanation, the optical node device #2 from the 3R relaying to expectations or the #3 that need not have also seen test off and use light signal, still also can omit to these optical node devices #2, #3 and see the process of testing with light signal off.Perhaps, also can only need optical node device #5, the #6 of 3R relaying to see test off and use light signal to expectation.

So far the explanation of the 19th embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of up light path with reference to Figure 58 and Figure 59.The optical node device of the 19th embodiment adjacent light node device hop-by-hop from next jumping when oneself is source node is set light path to other optical node devices that the path to destination node comprises successively.It is characterized in that 3R relay implementation judging part 229 comprises: see parts off, see test off to up light path after when oneself being not source node, oneself having been set light path to use light signal; In addition, this 3R relay implementation judging part 229 comprises: the notice parts receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal when oneself is source node; Moreover, see above-mentioned test off and when satisfying the impaired condition of regulation with the impaired condition of light signal, be judged as and will implement the 3R relaying the light signal that arrives from up light path based on the above-mentioned test of this notice with the 3R relay implementation judging part 229 of the optical node device of light signal.Moreover; 3R relay implementation judging part 229 comprises: the notice parts; Oneself be that the adjacent light node device hop-by-hop from next jumping is set light paths to other optical node devices that the path from own to the above-mentioned purpose node comprises successively in the time of will on up light path, implementing the optical node device of 3R relaying, receiving above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the end of seeing off of this test with light signal.In fact, in each optical node device, comprise 3R relay implementation judging part 229, when oneself becoming source node, 3R source node or 3R destination node, start above-mentioned each functions of components.

The work of the optical node device of the 19th embodiment then, is described.3R relay implementation request process shown in Figure 59 is carried out by 3R relay implementation judging part 229.Here, while with optical node device #1 be on the up light path the 3R destination node, setting light path, to ask to implement the process of 3R relaying be that example describes.Shown in Figure 57, the optical node device #2 that jump the own back 1 of 3R relay implementation judging part 229 contrasts of optical node device #1 sets light path (step 111, step 112).In Figure 58, optical node device #1 sets request (PATH) with light path and passes out to optical node device #2.After optical node device #2 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1.Between optical node device #1 and #2, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 113), and the test of surveying from optical node device #2 reports to optical node device #2 (step 114) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #2 with light signal in, do not detect deterioration (step 115), so the optical node device #3 that jump the own back 2 of optical node device #1 contrast sets light path (step 116, step 112).In Figure 58, optical node device #1 sets request (PATH) with light path and passes out to optical node device #3 via optical node device #2.After optical node device #3 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #2.Between optical node device #1 and #3, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 113), and the test of surveying from optical node device #3 reports to optical node device #3 (step 114) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #3 with light signal in, do not detect deterioration (step 115), so the optical node device #4 that jump the own back 3 of optical node device #1 contrast sets light path (step 116, step 112).In Figure 58, optical node device #1 sets request (PATH) with light path and passes out to optical node device #4 via optical node device #2 and #3.After optical node device #4 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #3 and #2.Between optical node device #1 and #4, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 113), and the test of surveying from optical node device #4 reports to optical node device #4 (step 114) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #4 with light signal in, do not detect deterioration (step 115), so the optical node device #5 that jump the own back 4 of optical node device #1 contrast sets light path (step 116, step 112).In Figure 58, optical node device #1 sets request (PATH) with light path and passes out to optical node device #5 via optical node device #2, #3, #4.After optical node device #5 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #4, #3, #2.Between optical node device #1 and #5, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 113), and the test of surveying from optical node device #5 reports to optical node device #5 (step 114) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #5 with light signal in, do not detect deterioration (step 115), so the optical node device #6 that jump the own back 5 of optical node device #1 contrast sets light path (step 116, step 112).In Figure 58, optical node device #1 sets request (PATH) with light path and passes out to optical node device #6 via optical node device #2, #3, #4, #5.After optical node device #6 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #5, #4, #3, #2.Between optical node device #1 and #6, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 113), and the test of surveying from optical node device #6 reports to optical node device #6 (step 114) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #6 with light signal in, detect deterioration (step 115), so the optical node device #5 that request is jumped than own back 4 implements 3R relaying (step 117).After optical node device #5 has accepted the 3R relay implementation request from optical node device #1, promise to undertake to optical node device #1 acknowledges requests.

In addition, optical node device #5 is according to from the notice (step 118) of optical node device #1, and identifying oneself is the 3R source node, the process that execution in step 111 is later.In addition, optical node device #1 request optical node device #5 implements the 3R relaying, owing to do not receive 3R relay implementation request from other optical node devices, so end process.

Like this, in the 19th embodiment, in the process of setting light path, can determine to implement the optical node device of 3R relaying.In the example of Figure 58, in each optical node device #1～#7, all comprise 3R relay implementation judging part 229 respectively, but for example also can whenever comprise a 3R relay implementation judging part 229 at a distance from an optical node device.In addition, in the present embodiment, understand easily in order to make explanation, the optical node device #2 from the 3R relaying to expectations or the #3 that need not have also seen test off and use light signal, still also can omit to these optical node devices #2, #3 and see the process of testing with light signal off.Perhaps, also can only need optical node device #5, the #6 of 3R relaying to see test off and use light signal to expectation.

(the 20th embodiment)

The optical node device of the 20th embodiment is described with reference to Figure 60 to Figure 63.Figure 60 and Figure 62 are the schematic diagrams that the 3R block information in the optical node device of the 20th embodiment is collected.Figure 61 and Figure 63 are the frame assumption diagrams of the optical node device of the 20th embodiment.

The optical node device of the 20th embodiment is characterised in that, shown in Figure 61, comprising: Q value maintaining part 234 keeps the value Q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; P value unloading part 232 under the situation that oneself is source node, transmits by the initial value P of depreciation to the adjacent light node device of next jumping; Subtract Q value portion 235, own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q); And comparison portion 236; Relatively this subtracts the result of calculation and the threshold value of Q value portion 235, under the situation greater than threshold value, this result of calculation is passed to the adjacent light node device of next jumping; And under the situation below the threshold value, indication is implemented the 3R relaying to the light signal that arrives oneself; P value unloading part 232 is not when oneself having been transmitted this by the destination node of the light path of depreciation, with the own adjacent light node device that also will be passed to next jumping as the 3R source node by the initial value P of depreciation.

The work of the optical node device of the 20th embodiment then, is described.Q value generation portion 233 generates the Q value according to the result of the optical signal deterioration degree of the link of reference from parameter list 240 and deterioration degree table 250 oneself connection.The Q value is to be directly proportional with deterioration degree and definite constant, for each link is provided with the Q value.In addition, the Q value is set with respect to initial value P.For example; Under the situation of the deterioration degree of considering the light signal in this optical node device with light signal strength and optical noise; Make the attenuated optical signal seen off from the 3R source node to half the intensity and the error rate of the light signal of seeing off from the 3R source node is increased under 2 times the situation; If initial value P is 100, then the Q value is set to 50.Whenever via optical node device the time, deduct this Q value, the optical node device of subtraction result below threshold value known oneself will implement the 3R relaying.Moreover, when oneself is not the destination node of tested light path, think it oneself is the 3R source node, see initial value P again off.

Like this, can in the light path assignment procedure, judge the 3R relay implementation.That is,, can judge that oneself whether will implement the 3R relaying carries out the light path assignment procedure while then accepted each optical node device of light path setting request if in light path setting request, carried initial value P.

So far the explanation of the 20th embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of up light path with reference to Figure 62 and Figure 63.The optical node device of the 20th embodiment is characterised in that, shown in Figure 63, comprising: q value maintaining part 334 keeps the value q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; P value unloading part 332 under the situation that oneself is source node, transmits by value added initial value p to the adjacent light node device of next jumping; Add q value portion 335, own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q); And comparison portion 336; Relatively this adds the result of calculation and the threshold value of q value portion 335, under the situation less than threshold value, this result of calculation is passed to the adjacent light node device of next jumping; And under the situation more than the threshold value, indication is implemented the 3R relaying to the light signal that arrives oneself from up light path; P value unloading part 332 is not when oneself having been transmitted this by the destination node of value added light path, with the own adjacent light node device that also will be passed to next jumping as the 3R destination node on the up light path by value added initial value p.

The work of the optical node device of the 20th embodiment then, is described.Q value generation portion 333 generates the q value according to the result of the optical signal deterioration degree of the link of reference from parameter list 240 and deterioration degree table 250 oneself connection.The q value is to be directly proportional with deterioration degree and definite constant, for each link is provided with the q value.In addition, the Q value under the situation of q value and aforementioned descending light path is set equally.

Whenever via optical node device the time, add this q value, addition results is known at the optical node device more than the threshold value oneself will implement the 3R relaying on up light path.Moreover, when oneself is not the destination node of tested light path, think it oneself is the 3R destination node on the up light path, see initial value p again off.

Wherein, the p value is made as " 0 " in the 20th embodiment, but can consider to set the p value at condition.For example, can in the scope of the interval maximum length of 3R, add and subtract the 3R length of an interval degree of setting with the p value.That is, if threshold value is fixed, if then the p value is made as negative integer, then compare with the situation that the p value is set at " 0 ", the numerical value that can carry out addition is big, so can set the 3R interval long.On the contrary, if the p value is made as positive integer, then compare with the situation that the p value is set at " 0 ", the numerical value that can carry out addition is little, so can set the 3R interval short.

Wherein, In the 17th～the 20th embodiment, understand easily in order to make explanation, the situation of having imagined descending light path has been described respectively and has been imagined the situation of up light path; But in fact, can set the 3R interval simultaneously to upstream and downstream bi-directional light path through carrying out them simultaneously.

(the 21st embodiment)

With reference to Figure 64 to Figure 66 the present invention the 21st embodiment is described.Figure 64 is the net control device of the 21st embodiment and the graph of a relation between the light net.Figure 65 is the frame assumption diagram of the net control device of the 21st embodiment.Figure 66 is the frame assumption diagram of the service equipment of the 21st embodiment.

The 21st embodiment is that management comprises that exchange connects a plurality of optical node devices 1～8 of light signal and the net control device 410 of the light net of the optical transmission line that is connected 1～8 of these a plurality of optical node device shown in Figure 64.Here, the 21st embodiment is characterised in that, shown in Figure 65, comprising: topology information maintaining part 411, the topology information of maintenance light net; 3R block information establishment portion 412 is created on above topology information the optical node device of the appointment estimated information as the 3R interval of 3R source node according to the jumping figure information of input; 3R block information change portion 413 changes the part of the interval estimated information of 3R on the above topology information that this 3R block information establishment portion 412 creates or all according to the indication of input; And 3R block information notice portion 414, the interval information of the 3R on the above topology information that this 3R block information change portion 413 was changed is notified to above-mentioned optical node device.

The work of the net control device 410 of the 21st embodiment then, is described.Shown in Figure 64, the light net that net control device 410 centralized control are made up of optical node device 1～8.That is, each optical node device 1～8 is discerned the role that this optical node device is assigned with at light on the net through communicating with net control device 410, starts the function suitable with this role.In addition, net control device 410 gathers and keeps the various information from each optical node device 1～8, carries out required various calculating and the processing of operation light net according to this information that has gathered.

Here, explain that net control device 410 generates the embodiment of 3R block information.In topology information maintaining part 411, keeping the topology information of the light net shown in Figure 64.This information is by regular update.Perhaps, when change takes place topology, be updated.Then, on this topology information, create the optical node device of appointment as the interval estimated information of the 3R of 3R source node according to the jumping figure information of input.In the example of Figure 65, jumping figure information is " 2 ", and the 3R source node is an optical node device 1.

Thus, on the topology information of 3R block information establishment portion 412, created the estimated information in 1 → 2 → 3,1 → 4 → 6,1 → 5 → 7 these 3 intervals.Then, the modification information of the estimated information in the 3R interval of 3R block information change portion 413 input hope changes.In the example of Figure 64, imported and 3R interval 1 → 5 → 7 changed to 1 → 5 → 7 → 8 indication.For example utilize interval 1 → 5 → 7 → 8 user to confirm interval the 1 → 5 → 7 → 8th, send this change indication under the situation in 3R interval through actual measurement frequent.

The 3R block information that changed is like this given each optical node device 1～8 by 3R block information notice portion 414 notices.This notice can be carried out when change takes place the 3R block information, perhaps also can ask net control device 410 notices where necessary by each optical node device 1～8.

The determining method of the jumping figure information that is input to 3R block information establishment portion 412 is described here.This jumping figure information is estimated that 3R is interval, is decided with its jumping figure, but in the 21st embodiment, the service equipment with function of calculating this jumping figure information automatically is described.

The service equipment of the 21st embodiment comprises shown in Figure 66: jumping figure information generation portion 445, the information of generation jumping figure; Parameter list 440, the optical fiber kind of using with the light net and the information of wave band come together to keep the topology information of this light net; And deterioration degree table 450, write down the relation between the deterioration degree of the average light signal in optical fiber kind and wave band and unit interval; The deterioration degree of the light signal that optical fiber kind that writes down in the optical fiber kind on the topology information that 445 contrasts of jumping figure information generation portion obtain with reference to parameter list 440 and the information of wave band and the deterioration degree table 450 and wave band and unit interval are average generates the information of above-mentioned jumping figure.

The work of the service equipment of the 21st embodiment then, is described.Jumping figure information generation portion 445 for example estimates optical node device 1 interval as the 3R under the situation of 3R source node with reference to topology information.In this is estimated, operation parameter table 440 and deterioration degree table 450.

Here, explain optical node device 1 as the jumping figure estimation procedure under the situation of 3R source node.Set from optical node device 1 to the for example light path of optical node device 4, then according to parameter list 440, the optical fiber kind of setting this light path is D, and wave band is L.Then, investigate the deterioration degree of the combination of optical fiber kind D and wave band L with reference to deterioration degree table 450.Consequently " 1 ".

Then, set from optical node device 4 to optical node device 6 light path, then according to parameter list 440, the optical fiber kind of setting this light path is B, and wave band is L.Then, investigate the deterioration degree of the combination of optical fiber kind B and wave band L with reference to deterioration degree table 450.Consequently " 4 ".According to result so far, 6 deterioration degree is " 5 " from optical node device 1 to optical node device.

Then, set from optical node device 6 to optical node device 8 light path, then according to parameter list 440, the optical fiber kind of setting this light path is C, and wave band is L.Then, investigate the deterioration degree of the combination of optical fiber kind C and wave band L with reference to deterioration degree table 450.Consequently " 2 ".According to result so far, 8 deterioration degree is " 7 " from optical node device 1 to optical node device.

Here, if for example know at deterioration degree and before " 5 ", need not the 3R relaying, need not the 3R relayings before then knowing optical node device 1 → 4 → 6.Estimate the jumping figure that 3R is interval according to the result who obtains like this, it is offered the 3R block information establishment portion 412 of net control device 410.

So far the explanation of the 21st embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path; But a type release easily also can the same process of enough and descending light path generate the 3R block information to up light path, so detailed.

(the 22nd embodiment)

With reference to reference to Figure 51 and Figure 67 to Figure 70 of crossing the 22nd embodiment being described among the 17th embodiment.Figure 67 and Figure 69 are the frame assumption diagrams of the net control device of the 22nd embodiment.Figure 68 and Figure 70 are the key diagrams of the basis of the 22nd embodiment optical node device of surveying from the indication of net control device.The frame assumption diagram of the actual measurement portion of present embodiment is identical with Figure 51.

The net control device 410 of the 22nd embodiment is characterised in that, shown in Figure 67, comprising: topology information maintaining part 411, the topology information of maintenance light net; 3R block information establishment portion 412 is created on above topology information the optical node device 1 of the appointment estimated information as the 3R interval of 3R source node according to the jumping figure information of input; Test is with light path setting portion 415, pilot light node device 1～8 with above topology information that this 3R block information establishment portion 412 is created on the online interval of the corresponding above-mentioned light of the interval estimated information of 3R on setting test and use light path; This test makes the optical signal deterioration degree that above-mentioned test that optical node device 1～8 sets causes with light path with light path setting portion 415 measured result is collected by measured data collection portion 416; 3R block information change portion 413, the measured result of the above-mentioned optical signal deterioration degree of collecting according to this measured data collection portion 416 changes the part of the interval estimated information of 3R on the above topology information that 3R block information establishment portion 412 creates or all; And 3R block information notice portion 414, the interval information of the 3R on the above topology information that this 3R block information change portion 413 was changed is notified to optical node device 1～8.

The work of the net control device 410 of the 22nd embodiment then, is described.Shown in Figure 64, the light net that net control device 410 centralized control are made up of optical node device 1～8.That is, each optical node device 1～8 is discerned the role that this optical node device is assigned with at light on the net through communicating with net control device 410, starts the function suitable with this role.In addition, net control device 410 gathers and keeps the various information from each optical node device 1～8, carries out required various calculating and the processing of operation light net according to this information that has gathered.

Here, explain that net control device 410 generates the embodiment of 3R block information.In topology information maintaining part 411, keeping the topology information of the light net shown in Figure 64.This information is by regular update.Perhaps, when change takes place topology, be updated.Then, on this topology information, create the optical node device of appointment as the interval estimated information of the 3R of 3R source node according to the jumping figure information of input.In the example of Figure 67, jumping figure information is " 3 ", and the 3R source node is an optical node device 1.

Thus, on the topology information of 3R block information establishment portion 412, created the estimated information in 1 → 2 → 3,1 → 4 → 6 → 8,1 → 5 → 7 → 8 these 3 intervals.Then, test is surveyed with light path with the actual set test on the 3R interval that 3R block information establishment portion 412 is created of light path setting portion 415 pilot light node devices 1～8.

The interval actual measurement process of 3R with reference to Figure 68 in Mingguang City's node device 1,4,6,8.After coming the control system 417 of self-test with each optical node device 1,4,6,8 of indication arrival of light path setting portion 415, the role of each optical node device 1,4,6,8 identification oneself comes start-up function.That is, it oneself is that light path is used in 3R source node, the test that will be set to optical node device 8 that optical node device 1 identifies, and the test that reservation is set to adjacent light node device 4 is sent test with the request of light path setting with the required resource of light path to optical node device 4.Optical node device 4 is accepted test from optical node device 1 with the request of light path setting, keep be set to optical node device 6 test with the required resource of light path, send to optical node device 6 and to test with the request of light path setting.Optical node device 6 is accepted test from optical node device 4 with the request of light path setting, keep be set to optical node device 8 test with the required resource of light path, send to optical node device 8 and to test with the request of light path setting.Optical node device 8 is accepted use the light path request from the test of optical node device 6, and optical node device 6 between set test and use light path, will notify the completed test of this setting to notify and issue optical node device 6 with the completion of light path setting.Optical node device 6 is accepted to accomplish notice from the test of optical node device 8 with the light path setting, and optical node device 4 between set test and use light path, will notify the completed test of this setting to notify and issue optical node device 4 with the completion of light path setting.Optical node device 4 is accepted to accomplish notice from the test of optical node device 6 with the light path setting, and optical node device 1 between set test and use light path, will notify the completed test of this setting to notify and issue optical node device 1 with the completion of light path setting.These tests are undertaken by light path configuration part 419 with the light path setting.

Optical node device 1 is accepted to accomplish notice from the test of optical node device 4 with the light path setting, and the test that identifies optical node device 8 is set with light path, sees test to this test with light path from the transmitter (TX) of actual measurement portion 418 and uses light signal.This test receives with the receiver (RX) of the actual measurement portion 418 of each

optical node device

4,6,8 of optical signals.Receive test and judge the deterioration degree of this test with light signal, the control system 417 of its result notification being given optical node device 1 with the actual measurement portion 418 of each

optical node device

4,6,8 of light signal.The control system 417 of having accepted the optical node device 1 of this notice identifies

optical node device

4,6 and need not the 3R relaying in the past, gives net control device 410 with its actual measurement result notification.Optical node device 1 is also surveyed interval 1 → 2 → 3, interval 1 → 5 → 7 → 8 equally.

Actual measurement portion 418 comes the optical noise and the luminous intensity of measured light signal respectively with optical noise observation portion 225 and luminous intensity observation portion 226 as explaining with reference to Figure 51.Its measured result is gathered by measured data generation portion 231.Wherein, the actual measurement portion 418 of other embodiment also is same structure.

The measured data collection portion 416 of net control device 410 collects from the measured result of optical node device 1 notice, passes to 3R block information change portion 413.The interval estimated information of 3R that 3R block information change portion 413 is created 3R block information establishment portion 412 according to the measured result that transmits from measured data collection portion 416 changes.Consequently, 3R interval 1 → 4 → 6 → 8 is changed to 1 → 4 → 6.The 3R block information that 3R block information change portion 413 changed is given optical node device 1～8 by 3R block information notice portion 414 notices.This notice can be carried out when change takes place the 3R block information, perhaps also can ask net control device 410 notices where necessary by each optical node device 1～8.

So far the explanation of the 22nd embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of up light path with reference to Figure 69 and Figure 70.Shown in Figure 64, the light net that net control device 410 centralized control are made up of optical node device 1～8.That is, each optical node device 1～8 is discerned the role that this optical node device is assigned with at light on the net through communicating with net control device 410, starts the function suitable with this role.In addition, net control device 410 gathers and keeps the various information from each optical node device 1～8, carries out required various calculating and the processing of operation light net according to this information that has gathered.

Here, explain that net control device 410 generates the embodiment of 3R block information.In topology information maintaining part 411, keeping the topology information of the light net shown in Figure 64.This information is by regular update.Perhaps, when change takes place topology, be updated.Then, on this topology information, create the optical node device of appointment as the interval estimated information of the 3R of 3R source node according to the jumping figure information of input.In the example of Figure 69, jumping figure information is " 3 ", and the 3R source node is

optical node device

3 and 8.

Thus, on the topology information of 3R block information establishment portion 412, created the estimated information in 3 → 2 → 1,8 → 6 → 4 → 1,8 → 7 → 5 → 1 these 3 intervals.Then, test is surveyed with light path with the actual set test on the 3R interval that 3R block information establishment portion 412 is created of light path setting portion 415 pilot light node devices 1～8.

The interval actual measurement process of 3R with reference to Figure 70 in Mingguang City's node device 1,4,6,8.After coming the control system 417 of self-test with each optical node device 1,4,6,8 of indication arrival of light path setting portion 415, the role of each optical node device 1,4,6,8 identification oneself comes start-up function.Promptly; It oneself is that light path is used in the 3R destination node of up light path, the test that will be set to optical node device 8 that optical node device 1 identifies; The test that reservation is set to adjacent light node device 4 is sent test with the request of light path setting with the required resource of light path to optical node device 4.Optical node device 4 is accepted test from optical node device 1 with the request of light path setting, keep be set to optical node device 6 test with the required resource of light path, send to optical node device 6 and to test with the request of light path setting.Optical node device 6 is accepted test from optical node device 4 with the request of light path setting, keep be set to optical node device 8 test with the required resource of light path, send to optical node device 8 and to test with the request of light path setting.Optical node device 8 is accepted use the light path request from the test of optical node device 6, and optical node device 6 between set test and use light path, will notify the completed test of this setting to notify and issue optical node device 6 with the completion of light path setting.Optical node device 6 is accepted to accomplish notice from the test of optical node device 8 with the light path setting, and optical node device 4 between set test and use light path, will notify the completed test of this setting to notify and issue optical node device 4 with the completion of light path setting.Optical node device 4 is accepted to accomplish notice from the test of optical node device 6 with the light path setting, and optical node device 1 between set test and use light path, will notify the completed test of this setting to notify and issue optical node device 1 with the completion of light path setting.These tests are undertaken by light path configuration part 419 with the light path setting.

Optical node device 1 is accepted to accomplish notice from the test of optical node device 4 with the light path setting, and the test that identifies optical node device 8 is set with light path.Then, optical node device 1 request optical node device 8 is seen test off and is used light signal.The optical node device 8 of having accepted this request is seen off to test with up light path to test from the transmitter (TX) of actual measurement portion 418 and is used light signal.This test receives with the receiver (RX) of the actual measurement portion 418 of each optical node device 6,4,1 of optical signals.Receive test and judge the deterioration degree of this test with light signal, the control system 417 of its result notification being given optical node device 1 with the actual measurement portion 418 of each optical node device 6,4 of light signal.The control system 417 of having accepted the optical node device 1 of this notice identifies optical node device 4,6 and need not the 3R relaying; But the test that oneself receives at (optical node device 1) is many with optical signal deterioration; Need the 3R relaying, give net control device 410 its actual measurement result notification.Optical node device 1 is also surveyed interval 3 → 2 → 1, interval 8 → 7 → 5 → 1 equally.

The measured data collection portion 416 of net control device 410 collects from the measured result of optical node device 1 notice, passes to 3R block information change portion 413.The interval estimated information of 3R that 3R block information change portion 413 is created 3R block information establishment portion 412 according to the measured result that transmits from measured data collection portion 416 changes.Consequently, 3R interval 8 → 6 → 4 → 1 is changed to 6 → 4 → 1.The 3R block information that 3R block information change portion 413 changed is given optical node device 1～8 by 3R block information notice portion 414 notices.This notice can be carried out when change takes place the 3R block information, perhaps also can ask net control device 410 notices where necessary by each optical node device 1～8.

Like this, the net control device 410 of the 22nd embodiment is surveyed through the estimated value to the jumping figure that offers 3R block information establishment portion 412 at first, changes, and can finally obtain correct 3R block information.Therefore, as the estimated value of the jumping figure that offers 3R block information establishment portion 412, preferably provide the estimation can be as the interval maximum of 3R.Perhaps, also can provide to surpass this peaked jumping figure slightly, expectation is revised through surveying.Thus, can be interval at the big as far as possible 3R of the online setting of light, the 3R repeater of enough required minimum numbers of ability or required minimum ability effectively utilizes Internet resources, constitutes economic light net.

(the 23rd embodiment)

With reference to Figure 71 and Figure 72 the 23rd embodiment is described.Figure 71 be the 23rd embodiment net control device want portion's frame assumption diagram.Figure 72 is the key diagram of the traffic demand information gathering in the net control device of the 23rd embodiment.

The net control device 410 of the 23rd embodiment is characterised in that, shown in Figure 71, comprising: topology information maintaining part 411, the topology information of maintenance light net; 3R block information maintaining part 420, the corresponding online 3R that sets of light that keeps with this topology information is interval; Traffic demand information collection component 421 is collected the traffic demand information in the light net; And the 3R block information adds request section 422; Traffic demand information according to these traffic demand information collection component 421 collections; In the interval that traffic demand has increased,, the interval that does not generate the 3R block information is as yet notified to the guardian with reference to the information of 3R block information maintaining part 420.

The work of the net control device 410 of the 23rd embodiment then, is described.The net control device 410 of the 23rd embodiment is keeping the online 3R block information of light that obtained in 3R block information maintaining part 420.Each optical node device 1～8 is measured oneself and is gone up the traffic on the link that connects, the traffic demand information on the link that each optical node device 1～8 that 421 collections of traffic demand information collection component are notified from optical node device 1～8 connects.Wherein, the traffic of measuring in each optical node device 1～8 is a known technology, so detailed.This traffic demand information is delivered to the 3R block information and adds request section 422.

Now; The 3R block information adds request section 422 shown in Figure 72; Discovering under the situation that traffic demand on interval 1 → 4 → 5 increased; With reference to 3R block information maintaining part 420, when distinguishing the 3R block information that does not have interval 1 → 4 → 5, ask the 3R block information on this interval 1 → 4 → 5 to the guardian.The guardian who has accepted this request for example utilizes the function of the net control device of explaining among the 21st or the 22nd embodiment to generate the 3R block information.

So far the explanation of the 23rd embodiment is the explanation of having imagined the descending light path in unidirectional light path or bi-directional light path; But a type release easily also can the same process of enough and descending light path generate the 3R block information to up light path, so detailed.

(the 24th embodiment)

The net control device of the 24th embodiment is described with reference to Figure 72 and Figure 73.Figure 72 is the key diagram of the traffic demand information gathering in the net control device of the 24th embodiment, and is public with the 23rd embodiment.Figure 73 be the 24th embodiment net control device want the bilge construction block diagram.

The net control device 410 of the 24th embodiment is characterised in that, shown in Figure 73, comprising: topology information maintaining part 411, the topology information of maintenance light net; 3R block information maintaining part 420, the corresponding online 3R that sets of light that keeps with this topology information is interval; Traffic demand information collection component 421 is collected the traffic demand information in the light net; And test is with light path setting portion 415, measured

data collection portion

416,3R block information change portion 413; Traffic demand information according to these traffic demand information collection component 421 collections; In the interval that traffic demand has increased; With reference to 3R block information maintaining part 420, the newly-generated 3R block information that does not generate the interval of 3R block information as yet.

The work of the net control device 410 of the 24th embodiment then, is described.The net control device 410 of the 24th embodiment is keeping the online 3R block information of light that obtained in 3R block information maintaining part 420.Each optical node device 1～8 is measured oneself and is gone up the traffic on the link that connects, the traffic demand information on the link that each optical node device 1～8 that 421 collections of traffic demand information collection component are notified from optical node device 1～8 connects.Wherein, the traffic of measuring in each optical node device 1～8 is a known technology, so detailed.This traffic demand information is delivered to test with light path setting portion 415.

Now; Test with light path setting portion 415 shown in Figure 72; Discovering under the situation that traffic demand on interval 1 → 4 → 5 increased; With reference to 3R block information maintaining part 420, when distinguishing the 3R block information that does not have interval 1 → 4 → 5, pilot

light node device

1,4,5 is set test with light path and actual measurement 3R block information.Measured data collection portion 416 collects from the measured result of the 3R block information of

optical node device

1,4,5.When this measured result demonstration can be made as the 3R interval with interval 1 → 4 → 5, indication 3R block information change portion 413 was made as new 3R interval with interval 1 → 4 → 5.3R block information change portion 413 has accepted this indication back change 3R block information, indication 3R block information maintaining part 420 change 3R block informations, and to 3R block information notice portion 414 these changed contents of transmission.3R block information notice portion 414 notifies this changed content to each optical node device 1～8.

So far the explanation of the 24th embodiment is the explanation of having imagined the descending light path in unidirectional light path or bi-directional light path; But a type release easily also can the same process of enough and descending light path generate the 3R block information to up light path, so detailed.

(the 25th embodiment)

The optical node device of the 25th embodiment is described with reference to Figure 74 and Figure 75.Figure 74 and Figure 75 are the key diagrams of wanting portion's frame structure and work of the optical node device of the 25th embodiment.The optical node device of the 25th embodiment is characterised in that, shown in Figure 74, comprising: actual measurement portion 418, and detection arrives the degradation mode of the light signal of oneself; Control system 417 is when detecting signal degradation in the testing result of this actual measurement portion 418, and to notify this optical node device be the 3R destination node and be the interval 3R source node of next 3R to the adjacent light node device suitable with the previous dive of oneself; 3R relay 424 when the notice of oneself having accepted from the control system 417 of the adjacent light node device of next jumping, identifies and oneself is the 3R destination node and is the interval 3R source node of next 3R; And 3R block information maintaining part 423, upgrade the 3R block information that oneself keeps according to this recognition result.

The work of the optical node device of the 25th embodiment then, is described.The optical node device of the 25th embodiment is keeping the 3R block information of overall optical net in 3R block information maintaining part 423 through the mutual advertisement of optical node device.In addition, when having set, the light signal branch of transmitting on this light path is input to actual measurement portion 418, observes its signal degradation state via oneself light path.Now, suppose that optical node device #4 detects the deterioration of light signal, then optical node device #4 is the 3R destination node and is the interval 3R source node of next 3R to optical node device #3 notice optical node device #3.The optical node device #3 that has accepted this notice will implement the 3R relaying via the light path guiding 3R relay 424 of oneself.And then the control system 417 of optical node device #3 is with oneself being the 3R destination node and being that other optical node devices are given in the interval 3R source node advertisement of next 3R.Accept the 3R block information maintaining part 423 of the optical node device of this advertisement and upgraded the 3R block information that oneself is keeping.

So far the explanation of the 25th embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of up light path with reference to Figure 75.The optical node device of the 25th embodiment is characterised in that, shown in Figure 75, comprising: actual measurement portion 418, the degradation mode of the light signal of the up light path of detection arrival oneself; Control system 417; Testing result in this actual measurement portion 418 is when detecting signal degradation, to jumping suitable adjacent light node device to notify this optical node device be the 3R destination node on the up light path with oneself next and being the interval 3R source node of next 3R; 3R relay 424 when the notice of oneself having accepted from the control system 417 of the adjacent light node device of previous dive, identifies and oneself is the 3R destination node on the up light path and is the interval 3R source node of next 3R; And 3R block information maintaining part 423, upgrade the 3R block information that oneself keeps according to this recognition result.

The work of the optical node device of the 25th embodiment then, is described.The optical node device of the 25th embodiment is keeping the 3R block information of overall optical net in 3R block information maintaining part 423 through the mutual advertisement of optical node device.In addition, when having set, the light signal branch of transmitting on this up light path is input to actual measurement portion 418, observes its signal degradation state via oneself up light path.Now, suppose that optical node device #1 detects the deterioration of light signal, then optical node device #1 is the 3R destination node on the up light path and is the interval 3R source node of next 3R to optical node device #2 notice optical node device #2.The optical node device #2 that has accepted this notice will implement the 3R relaying via the up light path guiding 3R relay 424 of oneself.And then the control system 417 of optical node device #2 is with oneself being the 3R destination node and being that other optical node devices are given in the interval 3R source node advertisement of next 3R.Accept the 3R block information maintaining part 423 of the optical node device of this advertisement and upgraded the 3R block information that oneself is keeping.

The situation that predefined like this 3R interval changes is described below.For example, in an optical node device, set under the situation of many new light paths, the light path of having established sometimes receives that the influence of the light path of newly establishing causes crosstalks or noise that nonlinear effect etc. causes, and in this case, the 3R interval changes.In the 25th embodiment, can tackle the interval variation of this 3R flexibly.

Wherein, If each optical node device has 3R relay 424 respectively, then can worry and compared whether can effectively utilize Internet resources in the past, but be that all optical node devices carry out the 3R relaying comparably in the past; And in the 25th embodiment; The optical node device of only selecting carries out the 3R relaying, and 3R relaying burden is dispersed to a plurality of optical node devices, so can effectively utilize Internet resources.

That is, the 3R relay 424 of each optical node device gets final product carrying out the 3R relaying via the part of light path of oneself following of nearly all situation.And the 3R relay 424 of each optical node device need be carried out the 3R relaying to the whole light paths via oneself in the past.Therefore, 3R relay 424 can the in the past little scale of enough ratios be dealt with, so can effectively utilize Internet resources and reduce cost.

(the 26th embodiment)

The optical node device of the 26th embodiment is described with reference to Figure 76 to Figure 78.Figure 76 is the frame assumption diagram that the output of the 26th embodiment comprises the optical node device of optical switch portion.Figure 77 is the frame assumption diagram that the input of the 26th embodiment comprises the optical node device of optical switch portion.Figure 78 is the frame assumption diagram of the optical node device that comprises relaying line style 3R relay of the 26th embodiment.

The optical node device of the 26th embodiment is characterised in that, comprising: actual measurement portion 418, and detection arrives the degradation mode of the light signal of oneself; 3R relay 424 is when detecting signal degradation in the testing result of this actual measurement portion 418, identifies oneself to be the 3R destination node and to be the interval 3R source node of next 3R; And 3R block information maintaining part 423, upgrade the 3R block information that oneself keeps according to this recognition result.

In the 25th embodiment; To notify this optical node device be the 3R destination node and be the interval 3R source node of next 3R to the optical node device of the previous dive of oneself to detect the optical node device of deterioration of light signal; And in the 26th embodiment; The optical node device self that detects the deterioration of light signal identifies self to be the 3R destination node and to be the interval 3R source node of next 3R, so the deterioration degree of detected light signal is the little deterioration degree of deterioration degree than detected light signal among the 25th embodiment among the 26th embodiment.That is, even the remarkable deterioration of the degree that the deterioration degree of the light signal of the 25th embodiment can not be regenerated through the 3R relaying, the optical node device of its previous dive also carries out the 3R relaying, so no problem.And the deterioration degree of the light signal of the 26th embodiment must be the degree that can regenerate through the 3R relaying of self.

The work of the optical node device of the 26th embodiment then, is described.Optical node device shown in Figure 76 passes to control system 417 with its testing result detect the deterioration of light signal of input in actual measurement portion 418 after.Control system 417 is sent indication to selector 427, and the light signal of importing is connected to 3R relay 424.Thus, imported the light signal of having implemented the 3R relaying via 3R relay 424 to optical switch portion 428.In addition, 3R block information maintaining part 423 identifies oneself to be the 3R destination node and to be the interval 3R source node of next 3R, upgrades the 3R block information that is so far keeping.Wherein, also can be as explaining among the 25th embodiment, the structure of other optical node devices is given in the 3R block information advertisement that employing will be upgraded.

Optical node device shown in Figure 77 passes to control system 417 with its testing result after detecting the deterioration of the light signal of exporting from optical switch portion 428 in actual measurement portion 418.Control system 417 is sent indication to selector 427, and the light signal of importing is connected to 3R relay 424.Thus, exported the light signal of having implemented the 3R relaying via 3R relay 424.In addition, 3R block information maintaining part 423 identifies oneself for carrying out the optical node device of 3R relaying, upgrades the 3R block information that is so far keeping.Wherein, also can be as explaining among the 25th embodiment, the structure of other optical node devices is given in the 3R block information advertisement that employing will be upgraded.

Optical node device shown in Figure 78 passes to control system 417 with its testing result detect the deterioration of light signal of input in actual measurement portion 418 after.Control system 417 is sent indication to optical switch portion 428, and the light signal of importing is connected to 3R relay 424.Thus, the light signal of having implemented the 3R relaying from the light signal of optical switch portion 428 temporary transient outputs via 3R relay 424 is imported into optical switch portion 428 once more.The light signal that the 3R relaying is crossed by optical switch portion 428 exchanges to the purpose direction.In addition, 3R block information maintaining part 423 identifies oneself for carrying out the optical node device of 3R relaying, upgrades the 3R block information that is so far keeping.Wherein, also can be as explaining among the 25th embodiment, the structure of other optical node devices is given in the 3R block information advertisement that employing will be upgraded.

So far the explanation of the 26th embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path; But a type release easily also can the same process of enough and descending light path generate the 3R block information to up light path, so detailed.

That is, it is characterized in that, comprising: actual measurement portion 418, the degradation mode of the light signal of the up light path of detection arrival oneself; Control system 417 is when detecting signal degradation in the testing result of this actual measurement portion 418, identifies oneself to be the 3R destination node on the up light path and to be the interval 3R source node of next 3R; And 3R block information maintaining part 423, upgrade the 3R block information that oneself keeps according to this recognition result.

(the 27th embodiment)

The optical node device of the 27th embodiment is described with reference to Figure 79 to Figure 82.Figure 79 and Figure 81 are the schematic diagrams that the 3R block information in the optical node device of the 27th embodiment is collected.Figure 80 and Figure 82 are the figure of the 3R block information collection process in the optical node device of the 27th embodiment.

The optical node device exchange of the 27th embodiment connects light signal; Generation is from own 3R block information to the path of destination node; It is characterized in that; Shown in Figure 79, in 3R block information collection portion 429, comprise: see parts off, when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths, see test off and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And notice parts; When accepting above-mentioned above-mentioned test of reporting the result that parts receive impaired condition based on this and satisfy the impaired condition of regulation, to notify these other optical node devices are 3R destination nodes and be the interval 3R source node of next 3R with other suitable optical node devices of previous dive of other optical node devices of above-mentioned distal-most end with light signal; Above-mentioned other optical node devices of having accepted this notice comprise in 3R block information collection portion 429: see parts off, when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths, see test off and use light signal; Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And notice parts; When accepting above-mentioned above-mentioned test of reporting the result that parts receive impaired condition based on this and satisfy the impaired condition of regulation, to notify these other optical node devices are 3R destination nodes and be the interval 3R source node of next 3R with other suitable optical node devices of previous dive of other optical node devices of above-mentioned distal-most end with light signal.In fact, in each optical node device, comprise 3R block information collection portion 429, when oneself becoming source node or 3R source node, start above-mentioned each functions of components.

The work of the optical node device of the 27th embodiment then, is described.3R block information collection process shown in Figure 80 is carried out by 3R block information collection portion 429.Here, while with optical node device #1 be the 3R source node, to set the process that light path generates the 3R block information be that example describes.Shown in Figure 80, the optical node device #2 that jump the own back 1 of 3R block information collection portion 429 contrasts of optical node device #1 sets light path (step 201, step 202).In Figure 79, optical node device #1 sets request (PATH) with light path and passes out to optical node device #2.After optical node device #2 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1.Between optical node device #1 and #2, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 203) to the light path of setting, reception from the test of optical node device #2 with optical signal deterioration status report (RESULT) (step 204).From the test of optical node device #2 with the optical signal deterioration status report in, do not detect deterioration (step 205), so the optical node device #3 that jump the own back 2 of optical node device #1 contrast sets light path (step 206, step 202).In Figure 79, optical node device #1 sets request (PATH) with light path and passes out to optical node device #3 via optical node device #2.After optical node device #3 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #2.Between optical node device #1 and #3, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 203) to the light path of setting, reception from the test of optical node device #3 with optical signal deterioration status report (RESULT) (step 204).From the test of optical node device #3 with the optical signal deterioration status report in, do not detect deterioration (step 205), so the optical node device #4 that jump the own back 3 of optical node device #1 contrast sets light path (step 206, step 202).In Figure 79, optical node device #1 sets request (PATH) with light path and passes out to optical node device #4 via optical node device #2 and #3.After optical node device #4 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #3 and #2.Between optical node device #1 and #4, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 203) to the light path of setting, reception from the test of optical node device #4 with optical signal deterioration status report (RESULT) (step 204).From the test of optical node device #4 with the optical signal deterioration status report in, do not detect deterioration (step 205), so the optical node device #5 that jump the own back 4 of optical node device #1 contrast sets light path (step 206, step 202).In Figure 79, optical node device #1 sets request (PATH) with light path and passes out to optical node device #5 via optical node device #2, #3, #4.After optical node device #5 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #4, #3, #2.Between optical node device #1 and #5, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 203) to the light path of setting, reception from the test of optical node device #5 with optical signal deterioration status report (RESULT) (step 204).From the test of optical node device #5 with the optical signal deterioration status report in, do not detect deterioration (step 205), so the optical node device #6 that jump the own back 5 of optical node device #1 contrast sets light path (step 206, step 202).In Figure 79, optical node device #1 sets request (PATH) with light path and passes out to optical node device #6 via optical node device #2, #3, #4, #5.After optical node device #6 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #5, #4, #3, #2.Between optical node device #1 and #6, set light path thus.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 203) to the light path of setting, reception from the test of optical node device #6 with optical signal deterioration status report (RESULT) (step 204).From the test of optical node device #6 with the optical signal deterioration status report in; Detect deterioration (step 205), so be the 3R destination node and be the interval 3R source node (state notifying) (step 207) of next 3R to the optical node device #5 notice optical node device #5 that jumps than own back 4.After optical node device #5 has accepted the notice from optical node device #1, reply to optical node device #1 and oneself to be the 3R destination node and to be the promise of the interval 3R source node of next 3R.

In addition, optical node device #5 is according to from the notice (step 208) of optical node device #1, and identifying oneself is the 3R source node, the process that execution in step 201 is later.In addition; Optical node device #1 is the 3R destination node and is the interval 3R source node of next 3R to optical node device #5 notice optical node device #5; Because to receive optical node device #1 be not the 3R destination node and be interval this notice of 3R source node of next 3R from other optical node devices, so end process.

Like this, in the 27th embodiment, in the process of setting light path, while can determine the optical node device that to implement the 3R relaying to collect the 3R block information.In the example of Figure 79, in each optical node device #1～#7, all comprise 3R block information collection portion 429 respectively, but for example also can whenever comprise a 3R block information collection portion 429 at a distance from an optical node device.In addition, in the present embodiment, understand easily in order to make explanation, the optical node device #2 from the 3R relaying to expectations or the #3 that need not have also seen test off and use light signal, still also can omit to these optical node devices #2, #3 and see the process of testing with light signal off.Perhaps, also can only need optical node device #5, the #6 of 3R relaying to see test off and use light signal to expectation.

So far the explanation of the 27th embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of up light path with reference to Figure 81 and Figure 82.The optical node device of the 27th embodiment generates the 3R block information on the path from the source node to the destination node; It is characterized in that; Comprise: 3R block information collection portion 429, the adjacent light node device hop-by-hop from next jumping when oneself is source node is set light path to other optical node devices that the path to destination node comprises successively; This 3R block information collection portion 429 comprises: see parts off, see test off to up light path after when oneself being not source node, oneself having been set light path to use light signal; In addition, this 3R block information collection portion 429 comprises: the notice parts receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal when oneself is source node; Moreover; Seeing above-mentioned test off comprises with the 3R block information collection portion 429 of the optical node device of light signal: identification component, identify when satisfying the impaired condition of regulation based on the above-mentioned test of this notice with the impaired condition of light signal and oneself be the 3R source node on the up light path and be the interval 3R destination node of last 3R; Moreover; Identify and oneself be the 3R source node on the up light path and be that the 3R block information collection portion 429 of the optical node device of the interval 3R destination node of last 3R comprises: the notice parts; Successively other optical node devices that the path from own to the above-mentioned purpose node comprises are set light paths from the adjacent light node device hop-by-hop of next jumping, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the end of seeing off of this test with light signal.In fact, in each optical node device, comprise 3R block information collection portion 429, when oneself becoming source node, 3R source node or 3R destination node, start above-mentioned each functions of components.

The work of the optical node device of the 27th embodiment then, is described.3R block information collection process shown in Figure 82 is carried out by 3R block information collection portion 429.Here, while with optical node device #1 be on the up light path the 3R destination node, to set the process that light path generates the 3R block information be that example describes.Shown in Figure 82, the optical node device #2 that jump the own back 1 of 3R block information collection portion 429 contrasts of optical node device #1 sets light path (step 211, step 212).In Figure 81, optical node device #1 sets request (PATH) with light path and passes out to optical node device #2.After optical node device #2 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1.Between optical node device #1 and #2, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 213), and the test of surveying from optical node device #2 reports to optical node device #2 (step 214) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #2 with light signal in, do not detect deterioration (step 215), so the optical node device #3 that jump the own back 2 of optical node device #1 contrast sets light path (step 216, step 212).In Figure 81, optical node device #1 sets request (PATH) with light path and passes out to optical node device #3 via optical node device #2.After optical node device #3 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #2.Between optical node device #1 and #3, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 213), and the test of surveying from optical node device #3 reports to optical node device #3 (step 214) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #3 with light signal in, do not detect deterioration (step 215), so the optical node device #4 that jump the own back 3 of optical node device #1 contrast sets light path (step 216, step 212).In Figure 81, optical node device #1 sets request (PATH) with light path and passes out to optical node device #4 via optical node device #2 and #3.After optical node device #4 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #3 and #2.Between optical node device #1 and #4, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 213), and the test of surveying from optical node device #4 reports to optical node device #4 (step 214) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #4 with light signal in, do not detect deterioration (step 215), so the optical node device #5 that jump the own back 4 of optical node device #1 contrast sets light path (step 216, step 212).In Figure 81, optical node device #1 sets request (PATH) with light path and passes out to optical node device #5 via optical node device #2, #3, #4.After optical node device #5 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #4, #3, #2.Between optical node device #1 and #5, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 213), and the test of surveying from optical node device #5 reports to optical node device #5 (step 214) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #5 with light signal in, do not detect deterioration (step 215), so the optical node device #6 that jump the own back 5 of optical node device #1 contrast sets light path (step 216, step 212).In Figure 81, optical node device #1 sets request (PATH) with light path and passes out to optical node device #6 via optical node device #2, #3, #4, #5.After optical node device #6 has accepted light path setting request (PATH), keep the required resource of this light path of setting and also see light path setting completion notice (RESV) off to optical node device #1 via optical node device #5, #4, #3, #2.Between optical node device #1 and #6, set light path thus.

Then; Optical node device #1 receives test from the up light path of setting with light signal (LIGHT) (step 213), and the test of surveying from optical node device #6 reports to optical node device #6 (step 214) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #6 with light signal in; Detect deterioration (step 215), so be the 3R source node on the up light path and be the interval 3R destination node (state notifying) (step 217) of last 3R to the optical node device #5 notice optical node device #5 that jumps than own back 4.After optical node device #5 has accepted the notice from optical node device #1, reply to optical node device #1 and oneself to be the 3R source node on the up light path and to be the promise of the interval 3R destination node of last 3R.

In addition, optical node device #5 is according to from the notice (step 218) of optical node device #1, and identifying oneself is the 3R source node, the process that execution in step 211 is later.In addition; Optical node device #1 is the 3R source node and is the interval 3R destination node of last 3R to optical node device #5 notice optical node device #5; Because to receive optical node device #1 be not the 3R source node and be interval this notice of 3R destination node of last 3R from other optical node devices, so end process.

Like this; In the example of Figure 81; When light signal is used in the test that receives the optical node device #2～#5 that arrives from up light path at optical node device #1; Even also do not report (RESULT) under the situation of deterioration detecting, but, this report confirms to receive the effect of test, so also can omit this report process with light signal because only having.

Like this, in the 27th embodiment, in the process of setting light path, while can determine the optical node device that to implement the 3R relaying to collect the 3R block information.In the example of Figure 81, in each optical node device #1～#7, all comprise 3R block information collection portion 429 respectively, but for example also can whenever comprise a 3R block information collection portion 429 at a distance from an optical node device.In addition, in the present embodiment, understand easily in order to make explanation, the optical node device #2 from the 3R relaying to expectations or the #3 that need not have also seen test off and use light signal, still also can omit to these optical node devices #2, #3 and see the process of testing with light signal off.Perhaps, also can only need optical node device #5, the #6 of 3R relaying to see test off and use light signal to expectation.

(the 28th embodiment)

The optical node device of the 28th embodiment is described with reference to Figure 83 to Figure 86.Figure 83 and Figure 85 are the schematic diagrams that the 3R block information in the optical node device of the 28th embodiment is collected.Figure 84 and Figure 86 are the figure of the 3R block information collection process in the optical node device of the 28th embodiment.

The optical node device of the 28th embodiment is characterised in that, comprising: set parts, and other optical node devices that successively the tested link that will measure the 3R block information comprised from oneself the adjacent light node device hop-by-hop of next jumping are set test and are used light path; See parts off, see off to test when other optical node devices that successively above-mentioned tested link comprised from the adjacent light node device hop-by-hop of next jumping whenever this set parts are set test with light path and use light signal; Accept parts, acceptance is from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal when this is seen other optical node devices that parts comprise to above-mentioned tested link from the adjacent light node device hop-by-hop of next jumping successively off and sees test with light signal off; And identification component; When accepting above-mentioned above-mentioned test of reporting the result that parts receive impaired condition based on this and satisfy the impaired condition of regulation, will be identified as with other suitable optical node devices of previous dive of other optical node devices of above-mentioned distal-most end and be the 3R destination node and be the interval 3R source node of next 3R with light signal.In fact, in each optical node device, comprise 3R block information collection portion 430, the needs of collecting the 3R block information according to oneself start above-mentioned each functions of components.

The work of the optical node device of the 28th embodiment then, is described.3R block information collection process shown in Figure 84 is carried out by 3R block information collection portion 430.Here, be example describes with the process of having imagined the collection 3R block information under the situation that optical node device #1 is the 3R source node.Shown in Figure 83, the optical node device #2 that jump the own back 1 of 3R block information collection portion 430 contrasts of optical node device #1 sets test with light path (step 221, step 222).In Figure 83, optical node device #1 will test with test and pass out to optical node device #2 with light path setting request (PATH).Optical node device #2 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting with the required resource of light path and to optical node device #1 and notify (RESV).Between optical node device #1 and #2, set test thus and used light path.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 223) to the test of setting with light path, reception from the test of optical node device #2 with optical signal deterioration status report (RESULT) (step 224).From the test of optical node device #2 with the optical signal deterioration status report in, do not detect deterioration (step 225), so the optical node device #3 that jump the own back 2 of optical node device #1 contrast sets test with light path (step 226, step 222).In Figure 83, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #3 via optical node device #2.Optical node device #3 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #2 and notify (RESV).Between optical node device #1 and #3, set test thus and used light path.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 223) to the test of setting with light path, reception from the test of optical node device #3 with optical signal deterioration status report (RESULT) (step 224).From the test of optical node device #3 with the optical signal deterioration status report in, do not detect deterioration (step 225), so the optical node device #4 that jump the own back 3 of optical node device #1 contrast sets test with light path (step 226, step 222).In Figure 83, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #4 via optical node device #2 and #3.Optical node device #4 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #3 and #2 and notify (RESV).Between optical node device #1 and #4, set test thus and used light path.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 223) to the test of setting with light path, reception from the test of optical node device #4 with optical signal deterioration status report (RESULT) (step 224).From the test of optical node device #4 with the optical signal deterioration status report in, do not detect deterioration (step 225), so the optical node device #5 that jump the own back 4 of optical node device #1 contrast sets test with light path (step 226, step 222).In Figure 83, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #5 via optical node device #2, #3, #4.Optical node device #5 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #4, #3, #2 and notify (RESV).Between optical node device #1 and #5, set test thus and used light path.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 223) to the test of setting with light path, reception from the test of optical node device #5 with optical signal deterioration status report (RESULT) (step 224).From the test of optical node device #5 with the optical signal deterioration status report in, do not detect deterioration (step 225), so the optical node device #6 that jump the own back 5 of optical node device #1 contrast sets test with light path (step 226, step 222).In Figure 83, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #6 via optical node device #2, #3, #4, #5.Optical node device #6 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #5, #4, #3, #2 and notify (RESV).Between optical node device #1 and #6, set test thus and used light path.

Then, optical node device #1 sees test off with light signal (LIGHT) (step 223) to the test of setting with light path, reception from the test of optical node device #6 with optical signal deterioration status report (RESULT) (step 224).From the test of optical node device #6 with the optical signal deterioration status report in, detect deterioration (step 225), be 3R interval (step 227) so identify the optical node device #5 that jumps than own back 4.

Like this, in the 28th embodiment, can set test and discern the 3R interval with light path.In the example of Figure 83, in each optical node device #1～#7, all comprise 3R block information collection portion 430 respectively, but for example also can whenever comprise a 3R block information collection portion 430 at a distance from an optical node device.In addition, in the present embodiment, understand easily in order to make explanation, the optical node device #2 from the 3R relaying to expectations or the #3 that need not have also seen test off and use light signal, still also can omit to these optical node devices #2, #3 and see the process of testing with light signal off.Perhaps, also can only need optical node device #5, the #6 of 3R relaying to see test off and use light signal to expectation.

In addition, the information of 3R block information collection portion 430 optical node device that will implement the 3R relaying that keeps identifying like this.Moreover; 3R block information collection portion 430 also can give other optical node devices with the informative advertising of the optical node device that will implement the 3R relaying that identifies like this, and receives from the above-mentioned advertisement of other optical node devices and the above-mentioned information that will implement the optical node device of 3R relaying that identifies with oneself and come together to keep the above-mentioned information that will implement the optical node device of 3R relaying that comprises in this advertisement.Thus, each optical node device can keep same 3R block information.

Perhaps, 3R block information collection portion 430 notifies the information of the optical node device that will implement the 3R relaying that oneself identifies to the net control device shown in Figure 64 410, thereby net control device 410 can keep the 3R block information of overall optical net.Each optical node device is through before setting light path, asks net control device 410 that the interval information of own required 3R is provided where necessary and obtains this information, thereby can reduce the 3R block information amount that each optical node device keeps.

This net control device 410 comprises the database that possesses following function: accept the information from the optical node device that will implement the 3R relaying of the optical node device that constitutes the light net, upgrade the interval information of 3R that is so far keeping; With the part of the interval information of the 3R that will keep or all offer this optical node device according to request from optical node device.

So far the explanation of the 28th embodiment is the explanation of having imagined the situation of the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of up light path with reference to Figure 85 and Figure 86.The optical node device of the 28th embodiment is characterised in that; Comprise: 3R block information collection portion 430, the adjacent light node device hop-by-hop from next jumping when oneself is source node is used up light path to other optical node devices setting tests that the tested link that will measure the 3R block information comprises successively; Having set this test comprises with the 3R block information collection portion 430 of the optical node device of up light path: see parts off, see test to this test off with up light path and use light signal; In addition, oneself be that the 3R block information collection portion 430 of the optical node device of source node comprises: the notice parts receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal; Moreover; Seeing above-mentioned test off comprises with the 3R block information collection portion 430 of the optical node device of light signal: identification component; When satisfying the impaired condition of regulation with the impaired condition of light signal, identify and oneself be the 3R source node on the up light path and be the interval 3R destination node of last 3R based on the above-mentioned test of this notice; Identify and oneself be the 3R source node on the up light path and be that the 3R block information collection portion 430 of the optical node device of the interval 3R destination node of last 3R comprises: the notice parts; Other optical node devices that successively the tested link that will test the 3R block information comprised from the adjacent light node device hop-by-hop of next jumping are set test and use light path, receive above-mentioned test and also will test with the report of the impaired condition of light signal with light signal and notify to the see end of this test with light signal.In fact, in each optical node device, comprise 3R block information collection portion 430, the needs of collecting the 3R block information according to oneself start above-mentioned each functions of components.

The work of the optical node device of the 28th embodiment then, is described.3R block information collection process shown in Figure 86 is carried out by 3R block information collection portion 430.Here, be example describes with the process of having imagined the collection 3R block information under the situation that optical node device #1 is the 3R destination node on the up light path.Shown in Figure 85, the optical node device #2 that jump the own back 1 of 3R block information collection portion 430 contrasts of optical node device #1 sets test with light path (step 21, step 232).In Figure 85, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #2.Optical node device #2 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting with the required resource of light path and to optical node device #1 and notify (RESV).Between optical node device #1 and #2, set test thus and used light path.

Then; Optical node device #1 receives from the test of setting with the test of up light path with light signal (LIGHT) (step 233), and the test of surveying from optical node device #2 reports to optical node device #2 (step 234) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #2 with light signal in, do not detect deterioration (step 235), so the optical node device #3 that jump the own back 2 of optical node device #1 contrast sets test with light path (step 236, step 232).In Figure 85, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #3 via optical node device #2.Optical node device #3 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #2 and notify (RESV).Between optical node device #1 and #3, set test thus and used light path.

Then; Optical node device #1 receives from the test of setting with the test of up light path with light signal (LIGHT) (step 233), and the test of surveying from optical node device #3 reports to optical node device #3 (step 234) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #3 with light signal in, do not detect deterioration (step 235), so the optical node device #4 that jump the own back 3 of optical node device #1 contrast sets test with light path (step 236, step 232).In Figure 85, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #4 via optical node device #2 and #3.Optical node device #4 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #3 and #2 and notify (RESV).Between optical node device #1 and #4, set test thus and used light path.

Then; Optical node device #1 receives from the test of setting with the test of up light path with light signal (LIGHT) (step 233), and the test of surveying from optical node device #4 reports to optical node device #4 (step 234) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #4 with light signal in, do not detect deterioration (step 235), so the optical node device #5 that jump the own back 4 of optical node device #1 contrast sets test with light path (step 236, step 232).In Figure 85, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #5 via optical node device #2, #3, #4.Optical node device #5 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #4, #3, #2 and notify (RESV).Between optical node device #1 and #5, set test thus and used light path.

Then; Optical node device #1 receives from the test of setting with the test of up light path with light signal (LIGHT) (step 233), and the test of surveying from optical node device #5 reports to optical node device #5 (step 234) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #5 with light signal in, do not detect deterioration (step 235), so the optical node device #6 that jump the own back 5 of optical node device #1 contrast sets test with light path (step 236, step 232).In Figure 85, optical node device #1 will test with light path setting request (PATH) and pass out to optical node device #6 via optical node device #2, #3, #4, #5.Optical node device #6 has accepted test with after the light path setting request (PATH), keep to set this test and sees off to test with the completion of light path setting to optical node device #1 with the required resource of light path and via optical node device #5, #4, #3, #2 and notify (RESV).Between optical node device #1 and #6, set test thus and used light path.

Then; Optical node device #1 receives from the test of setting with the test of up light path with light signal (LIGHT) (step 233), and the test of surveying from optical node device #6 reports to optical node device #6 (step 234) with optical signal deterioration and with its measured result (RESULT).From the test of optical node device #6 with light signal in, detect deterioration (step 235), be 3R interval (step 237) so identify the optical node device #5 that jumps than own back 4.

Wherein, In the example of Figure 85; When light signal is used in the test that receives the optical node device #2～#5 that arrives from up light path at optical node device #1; Even also do not report (RESULT) under the situation of deterioration detecting, but, this report confirms to receive the effect of test, so also can omit this report process with light signal because only having.

Like this, in the 28th embodiment, can set test and discern the 3R interval with light path.In the example of Figure 85, in each optical node device #1～#7, all comprise 3R block information collection portion 430 respectively, but for example also can whenever comprise a 3R block information collection portion 430 at a distance from an optical node device.In addition, in the present embodiment, understand easily in order to make explanation, the optical node device #2 from the 3R relaying to expectations or the #3 that need not have also seen test off and use light signal, still also can omit to these optical node devices #2, #3 and see the process of testing with light signal off.Perhaps, also can only need optical node device #5, the #6 of 3R relaying to see test off and use light signal to expectation.

(the 29th embodiment)

The basic principle of the 29th embodiment is identical with the 20th embodiment, so the optical node device of present embodiment is described with reference to used Figure 60 to Figure 63 among the 20th embodiment.But, being described below, the detailed operation of each one shown in Figure 60 to Figure 63 is different with the 20th embodiment.Figure 60 and Figure 62 are the schematic diagrams that the 3R block information in the optical node device of the 29th embodiment is collected.Figure 61 and Figure 63 are the frame assumption diagrams of the optical node device of the 29th embodiment.

The optical node device of the 29th embodiment is characterised in that, shown in Figure 61, comprising: Q value maintaining part 234 keeps the value Q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; P value unloading part 232 under the situation that oneself is source node, transmits by the initial value P of depreciation to the adjacent light node device of next jumping; Subtract Q value portion 235, own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q); And comparison portion 236; Relatively this subtracts the result of calculation and the threshold value of Q value portion 235; Under situation greater than threshold value; This result of calculation is passed to the adjacent light node device of next jumping, and under the situation below the threshold value, identify oneself be with see off this by the optical node device of the initial value P of depreciation as the 3R destination node under the situation of 3R source node; P value unloading part 232 to identify oneself be the 3R destination node, when not transmitted this by the destination node of the light path of depreciation, with own as the 3R source node and will be passed to the adjacent light node device of next jumping by the initial value P of depreciation.

The work of the optical node device of the 29th embodiment then, is described.Q value generation portion 233 generates the Q value according to the result of the optical signal deterioration degree of the link of reference from parameter list 240 and deterioration degree table 250 oneself connection.The Q value is to be directly proportional with deterioration degree and definite constant, for each link is provided with the Q value.In addition, the Q value is set with respect to initial value P.For example; Under the situation of the deterioration degree of considering the light signal in this optical node device with light signal strength and optical noise; Make the attenuated optical signal seen off from the 3R source node to half the intensity and the error rate of the light signal of seeing off from the 3R source node is increased under 2 times the situation; If initial value P is 100, then the Q value is set to 50.

Whenever via optical node device the time, deduct this Q value, the optical node device of subtraction result below threshold value knows it oneself is the 3R destination node.Like this, identifying at the optical node device that will see initial value P off oneself is the 3R destination node during as the 3R source node, and this recognition result is kept as the 3R block information.Perhaps, keep this recognition result and advertisement to give other optical node devices or net control device, thereby each optical node device can be shared same 3R block information.

Moreover, in that to identify oneself be the 3R destination node, when oneself is not the destination node of tested light path, think it oneself is the 3R source node, see initial value P again off.

Like this, can collect 3R block information from the source node to the destination node.In addition, this 3R block information is collected and can in the light path assignment procedure, be implemented.That is,, can judge whether oneself is that the 3R destination node is carried out the light path assignment procedure while then accepted each optical node device of light path setting request if in light path setting request, carried initial value P.

So far the explanation of the 29th embodiment is the explanation of having imagined the descending light path in unidirectional light path or bi-directional light path.Then, exposed installation has been thought the situation of the up light path in bi-directional light path with reference to Figure 62 and Figure 63.

The optical node device of the 29th embodiment is characterised in that, shown in Figure 63, comprising: q value maintaining part 334 keeps the value q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node; P value unloading part 332 under the situation that oneself is source node, transmits by value added initial value p to the adjacent light node device of next jumping; Add q value portion 335, own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q); And comparison portion 336; Relatively this adds the result of calculation and the threshold value of q value portion 335; Under situation less than threshold value; This result of calculation is passed to the adjacent light node device of next jumping, and under the situation more than the threshold value, identify oneself be with see off this by the optical node device of value added initial value p as the 3R source node under the situation of the 3R destination node on the up light path; P value unloading part 232 identify oneself be on the up light path the 3R source node, be not when having transmitted this by the destination node of value added light path, with own as the 3R destination node on the up light path and will be passed to the adjacent light node device of next jumping by value added initial value p.

The work of the optical node device of the 29th embodiment then, is described.Q value generation portion 333 generates the q value according to the result of the optical signal deterioration degree of the link of reference from parameter list 240 and deterioration degree table 250 oneself connection.The q value is to be directly proportional with deterioration degree and definite constant, for each link is provided with the q value.In addition, the Q value under the situation of q value and aforementioned descending light path is set equally.

Whenever via optical node device the time, add this q value, addition results knows it oneself is the 3R source node on the up light path at the optical node device more than the threshold value.Like this, identifying at the optical node device that will see initial value p off oneself is the 3R source node during as the 3R destination node on the up light path, and this recognition result is kept as the 3R block information.Perhaps, keep this recognition result and advertisement to give other optical node devices or net control device, thereby each optical node device can be shared same 3R block information.

Moreover, identify oneself be on the up light path the 3R source node, when oneself is not the destination node on the tested light path, think it oneself is the 3R destination node on the up light path, see initial value p again off.

Wherein, the p value is made as " 0 " in the 29th embodiment, but can consider to set the p value at condition.For example, can in the scope of the interval maximum length of 3R, add and subtract the 3R length of an interval degree of generation with the p value.That is, if threshold value is fixed, if then the p value is made as negative integer, then compare with the situation that the p value is set at " 0 ", the numerical value that can carry out addition is big, so can set the 3R interval long.On the contrary, if the p value is made as positive integer, then compare with the situation that the p value is set at " 0 ", the numerical value that can carry out addition is little, so can set the 3R interval short.

Like this, can collect 3R block information from the source node to the destination node.In addition, this 3R block information is collected and can in the light path assignment procedure, be implemented.That is, carried initial value p, set each optical node device of request and can judge it oneself whether is that 3R source node on the up light path is carried out the light path assignment procedure while then accepted light path if set in the request at light path.

Wherein, In the 21st～the 29th embodiment, understand easily in order to make explanation, the situation of having imagined descending light path has been described respectively and has been imagined the situation of up light path; But in fact, can generate the 3R block information simultaneously to upstream and downstream bi-directional light path through carrying out them simultaneously.

Utilizability on the industry

The present invention is used to exchange the light net that connects light signal.Be particularly related to the light net that comprises the optical node device that carries out the 3R relaying.According to the present invention, the 3R repeater of enough required minimum numbers of ability or required minimum ability effectively utilizes Internet resources, constitutes economic light net.

Claims

1. an optical node device exchanges the connection light signal, wherein,

To be that 3R is interval without the predefined section definition that the 3R relaying just can transmit data;

Comprise:

Detection part, detection arrives the degradation mode of the light signal of oneself;

Seeing parts off, is when detecting signal degradation in the testing result of this detection part, and the 3R relay request is passed out to and oneself the suitable adjacent light node device of previous dive; And

Implement parts, when oneself having accepted to see the above-mentioned 3R relay request of parts off, to arriving own light signal enforcement 3R relaying from the adjacent light node device of next jumping above-mentioned.

2. optical node device will be defined as destination node as the optical node device of the terminal point of light path;

Successively other optical node devices that the path from own to destination node comprises are set light path from the adjacent light node device hop-by-hop of next jumping, wherein, comprising:

See parts off, when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths, see test off and use light signal;

Accept parts; When this was seen other optical node devices that parts comprise to the path to the above-mentioned purpose node from the adjacent light node device hop-by-hop of next jumping successively off and sees test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And

The request parts; When accepting above-mentioned above-mentioned test of reporting the result that parts the receive impaired condition with light signal based on this and satisfy the impaired condition of regulation, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end are implemented the 3R relaying;

Above-mentioned other optical node devices of being implemented this 3R relaying by request comprise:

The request parts; When accepting above-mentioned above-mentioned test of reporting the result that parts the receive impaired condition with light signal based on this and satisfy the impaired condition of regulation, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end are implemented the 3R relaying.

3. an optical node device exchanges the connection light signal, wherein,

To be that 3R is interval without the predefined section definition that the 3R relaying just can transmit data; To be defined as the 3R source node as the optical node device of the interval starting point of this 3R; To be defined as the 3R destination node as the optical node device of the interval terminal point of this 3R; Set the optical node device of request and be defined as source node sending light path, will be defined as destination node as the optical node device of the terminal point of this light path;

Comprise:

Holding member keeps the value Q that confirms for each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node;

Transferring elements under the situation that oneself is source node, transmits by the initial value P of depreciation to the adjacent light node device of next jumping;

Calculating unit, own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q);

Implement parts, relatively the result of calculation of this calculating unit and threshold value under the situation greater than threshold value, pass to the adjacent light node device of next jumping with this result of calculation, and under the situation below the threshold value, the light signal that arrives oneself are implemented the 3R relaying; And

Transferring elements is not when oneself having been transmitted this by the destination node of the light path of depreciation, with the own adjacent light node device that also will be passed to next jumping as the 3R source node by the initial value P of depreciation.

4. an optical node device exchanges the connection light signal, wherein,

To be that 3R is interval without the predefined section definition that the 3R relaying just can transmit data; To be defined as the 3R source node as the optical node device of the interval starting point of 3R; To be defined as the 3R destination node as the optical node device of the interval terminal point of 3R; The optical node device that sends light path setting request is defined as source node; To be defined as destination node as the optical node device of the terminal point of this light path, will be defined as descending light path, will be defined as up light path from the light path that destination node is pointed to the direction of source node from the light path that source node points to the direction of destination node;

Comprise:

Detection part, detection arrives the degradation mode of the uplink optical signal of oneself;

Seeing parts off, is when detecting signal degradation in the testing result of this detection part, sees the 3R relay request off to jumping suitable adjacent light node device with oneself next; And

Implement parts, when the 3R relay request of oneself having accepted from the adjacent light node device of previous dive, the light signal that arrives from up light path is implemented the 3R relaying.

5. an optical node device exchanges the connection light signal, wherein,

To be that 3R is interval without the predefined section definition that the 3R relaying just can transmit data; To be defined as the 3R source node as the optical node device of the interval starting point of 3R; To be defined as the 3R destination node as the optical node device of the interval terminal point of 3R; Set the optical node device of request and be defined as source node sending light path, will be defined as destination node, will be defined as descending light path from the light path that source node points to the direction of destination node as the optical node device of the terminal point of this light path; To be defined as up light path from the light path that destination node is pointed to the direction of source node, comprise:

Set parts when oneself is source node, is set light path to other optical node devices that the path to destination node comprises from the adjacent light node device hop-by-hop of next jumping successively;

See parts off, when oneself being not source node, after having set light path on oneself, seeing test off to up light path and use light signal;

When oneself is source node, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the parts of seeing end off of this test with light signal;

Implement parts, oneself be above-mentioned test with light signal see the optical node device of end off the time, when satisfying the impaired condition of regulation with the impaired condition of light signal, to light signal enforcement 3R relaying from up light path arrival based on the above-mentioned test of this notice; And

Oneself be in the time of on up light path, to implement the optical node device of 3R relaying; Successively other optical node devices that the path from own to destination node comprises are set light paths from the adjacent light node device hop-by-hop of next jumping, receive above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the parts of seeing end off of this test with light signal.

6. an optical node device exchanges the connection light signal, wherein,

To be that 3R is interval without the predefined section definition that the 3R relaying just can transmit data; To be defined as the 3R source node as the optical node device of the interval starting point of this 3R; To be defined as the 3R destination node as the optical node device of the interval terminal point of this 3R; The optical node device that sends light path setting request is defined as source node; To be defined as destination node as the optical node device of the terminal point of this light path, will be defined as descending light path, will be defined as up light path from the light path that destination node is pointed to the direction of source node from the light path that source node points to the direction of destination node;

Comprise:

Transferring elements under the situation that oneself is source node, transmits by value added initial value p to the adjacent light node device of next jumping;

Calculating unit, own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q);

Implement parts, relatively the result of calculation of this calculating unit and threshold value under the situation less than threshold value, pass to the adjacent light node device of next jumping with this result of calculation, and under the situation more than the threshold value, the light signal that arrives oneself are implemented the 3R relaying; And

Transferring elements is not when oneself having been transmitted this by the destination node of value added light path, with the own adjacent light node device that also will be passed to next jumping as the 3R destination node on the up light path by value added initial value p.

7. light path establishing method; To be that 3R is interval without the predefined section definition that the 3R relaying just can transmit data; To be defined as the 3R source node as the optical node device of the interval starting point of this 3R; Set the optical node device of request and be defined as source node sending light path, will be defined as destination node as the optical node device of the terminal point of this light path;

Successively the optical node device that the path from the source node to the destination node comprises is set light path from adjacent light node device hop-by-hop, wherein, carries out as next jumping of the optical node device of source node:

First step; When the optical node device that successively path to the above-mentioned purpose node is comprised from the adjacent light node device hop-by-hop as next jumping of the optical node device of source node is set light path, use light signal from see test off as the optical node device of above-mentioned source node;

Second step; When the optical node device that comprises to the path to the above-mentioned purpose node successively from the adjacent light node device hop-by-hop as next jumping of the optical node device of above-mentioned source node whenever this first step is seen test off and use light signal, as the optical node device acceptance of above-mentioned source node from receiving this test with this test of the optical node device of the distal-most end of light signal report with the impaired condition of light signal; And

Third step; When the above-mentioned above-mentioned test of reporting the result that receives based on this second step is satisfied the impaired condition of regulation with the impaired condition of light signal, as the optical node device request of the above-mentioned source node optical node device enforcement 3R relaying suitable with the previous dive of the optical node device of above-mentioned distal-most end;

Implemented the above-mentioned optical node device of this 3R relaying carries out by request:

The 4th step is seen test off and is used light signal when other optical node devices that successively path to the above-mentioned purpose node comprised from the adjacent light node device hop-by-hop of next jumping are set light paths;

The 5th step; When other optical node devices that comprise to the path to the above-mentioned purpose node successively from the adjacent light node device hop-by-hop of next jumping whenever the 4th step were seen test off and use light signal, acceptance was from receiving this test with this tests of other optical node devices of the distal-most end of light signal report with the impaired condition of light signal; And

The 6th step; When the above-mentioned above-mentioned test of reporting the result that receives based on the 5th step was satisfied the impaired condition of regulation with the impaired condition of light signal, request other optical node devices suitable with the previous dive of other optical node devices of above-mentioned distal-most end were implemented the 3R relaying.

8. a 3R relay implementation node establishing method is used to exchange the optical node device that connects light signal, wherein,

Each optical node device keeps being the definite value Q of each link in advance according to the optical signal deterioration characteristic on the link between own and the adjacent node;

The optical node device that is source node transmits by the initial value P of depreciation to the adjacent light node device of next jumping;

Each optical node device own accepted this initial value P from the adjacent light node device of previous dive or from this initial value P, carried out subtraction by the situation of depreciation P ' under, calculate (P-Q) or (P '-Q);

Relatively this result of calculation and threshold value under the situation greater than threshold value, pass to the adjacent light node device of next jumping with this result of calculation, and under the situation below the threshold value, the light signal that arrives oneself are implemented the 3R relaying;

When oneself not transmitted this, with the own adjacent light node device that also will be passed to next jumping as the 3R source node by the initial value P of depreciation by the destination node of the light path of depreciation.

9. light path establishing method, wherein,

Carry out:

First step oneself is that the optical node device of source node is set light path to other optical node devices that the path to destination node comprises successively from the adjacent light node device hop-by-hop of next jumping;

Second step, the optical node device that is not source node is seen test off to up light path and is used light signal after having set light path on oneself;

Third step oneself is that the optical node device of source node receives above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal;

The 4th step, see off above-mentioned test with the optical node device of light signal when satisfying the impaired condition of regulation with the impaired condition of light signal based on the above-mentioned test of this notice, own the light signal that arrives from up light path is implemented the 3R relaying;

The 5th step; The optical node device that oneself will on up light path, implement the 3R relaying is set light paths to other optical node devices that the path from own to destination node comprises successively from the adjacent light node device hop-by-hop of next jumping, receives above-mentioned test with light signal and will test with the report of the impaired condition of light signal and notify to the see end of this test with light signal.

10. a 3R relay implementation node establishing method is used to exchange the optical node device that connects light signal, wherein,

The optical node device that is source node transmits by value added initial value p to the adjacent light node device of next jumping;

Each optical node device own accepted from the adjacent light node device of previous dive this initial value p or this initial value p carried out addition by the situation of value added p ' under, calculate (p+q) or (p '+q);

Relatively this result of calculation and threshold value under the situation less than threshold value, pass to the adjacent light node device of next jumping with this result of calculation, and under the situation more than the threshold value, the light signal that arrives oneself are implemented the 3R relaying;

When oneself not transmitted this, with the own adjacent light node device that also will be passed to next jumping as the 3R destination node on the up light path by value added initial value p by the destination node of value added light path.