CN101374107B

CN101374107B - Method, equipment and system for establishing and maintaining wavelength path

Info

Publication number: CN101374107B
Application number: CN2008100968479A
Authority: CN
Inventors: 易其亮; 韩建蕊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-08-25
Filing date: 2008-05-06
Publication date: 2011-03-30
Anticipated expiration: 2028-05-06
Also published as: CN101374107A

Abstract

The invention discloses a method, a device and a system for establishing a wavelength path. By updating a signaling message during the process of establishing the wavelength path according to the physical signal damage parameter information and the adjustable physical damage parameter range information of an adjustable unit, a target node determines whether the signal quality meets the signal quality gate limit according to the physical signal damage parameter contained in the signal massage; if the signal quality meets the signal quality gate limit, all the nodes of the current router establish the wavelength path according to the current router; otherwise, the target node further determines whether the signal quality meets the signal quality gate limit through adjusting the physical signal damage parameter within the adjustable physical damage parameter range, so that the signal quality meets the target node signal quality gate limit; if the signal quality meets the signal quality gate limit, the related node of the current router is informed of adjusting the physical signal damage parameter, and then all the nodes of the current router establish the wavelength path according to the current router. The invention also discloses a method, a device and a system for maintaining the wavelength path. By applying the method, the device and the system, the utilization ratio of the network resource and the success ratio of the wavelength path establishment are improved.

Description

Method, equipment and the system of a kind of foundation and maintaining wavelength path

Technical field

The present invention relates to the wavelength division multiplexed network routing and wavelength assignment, method, equipment and the system of particularly a kind of foundation and maintaining wavelength path.

Background technology

At wavelength division multiplexing (WDM, Wave-length Division Multiplexing) in the optical-fiber network, link to each other by one or more optical fiber between any two nodes, every optical fiber can be supported a plurality of wavelength, two internodal input and output light transmission paths can carry out interconnection, reconstruct optical-fiber network dynamically, when the professional arrival of client layer, wavelength division multiplexed optical network need and be selected wavelength for each traffic assignments route, set up light transmission path and carry out the business transmission, according to the light transmission path demand that business proposed, connect for setting up light transmission path, need to calculate route and distribute corresponding wavelength, this process is called route and Wavelength Assignment (RWA, Route andWavelength Assignment), its corresponding computational methods are called the RWA algorithm.The RWA algorithm of light transmission path is one of key problem of optical-fiber network, it is to solve how to seek a suitable light transmission path and reasonably distribute the employed wavelength of passage, Limited resources is played one's part to the full,, improve networks efficiency so that big as far as possible message capacity to be provided.

The RWA algorithm relates to optimization problem, and the complexity of some optimization method sharply increases along with the increase of network size, therefore, often the RWA problem is splitted on the engineering and selects route subproblem and Wavelength Assignment subproblem, finds the solution in two steps.For example,, at first carry out the Route Selection route, route is divided into 3 classes for dynamic RWA algorithm: fixed route, alternate routing, self adaptation route, fixed route adopts shortest path (ShortestPath) algorithm; Alternate routing is many shortest paths, when wavelength resource is not enough on first paths, changes an examination again; And being state according to network, the self adaptation route make light transmission path number on each bar optical fiber promptly use the number of wavelengths balance of trying one's best; After the selected route, carry out the distribution of wavelength, can adopt and at first be fit to (FF, First-Fit) algorithm, maximum-summation algorithm (Max-Sum), minimum influence (LI, Least Influence) method, the maximum (MU that uses, Most-Used) (Lu, Least-Used) the method scheduling algorithm distributes wavelength for method or minimum use.

In addition, also can adopt multi protocol label exchange (MPLS, Multi-Protocol Label Switching) agreement router, in order to support non-grouping form network, GMPLS (GMPLS has been proposed again, Generalized MPLS) agreement, resource reservation protocol flow engineering expansion (GMPLS RSVP-TE based on the GMPLS agreement, GMPLS Resource Reservation Protocol-TrafficEngineering) MPLS can be expanded to photosphere, after adopting GMPLS, can realize adopting unified optical-fiber network chain of command.

At present, in optical-fiber network, the foundation of light transmission path mainly is divided into centralized and distributed two kinds, centralized be exactly path computing all in the territory all be (as NMS by a centralized network element, NetworkManagement System) or path-calculating element (as PCE, Path Computation Element) finish; Distributed then is that each network element all is responsible for the calculating in path and the foundation of light transmission path by optical network control plane separately, and wherein the distributed network controlling mechanism is more healthy and stronger, uses more some morely.Distributed can be divided into again " based on means of signaling " and " based on the mode of route ", the method that " based on means of signaling " taked is mainly, signaling protocol to GMPLS is expanded, RWA carries out best route according to the TE Link parameter and calculates, each node of link is collected the physical signalling impairment parameter of the node of each process in the process of setup message propagation, as the luminous power size, polarization mode dispersion (PMD, PolarizationMode Dispersion), chromatic dispersion, decay, amplifier spontaneous radiation (ASE, Amplified EmissionSpontaneous), the signal to noise ratio of light path, the physical signalling impairment parameter of coming all accumulations of verification by destination node whether with the service quality (QoS of service request, Quality of Service) conforms to, if meet, then back response information is set up light transmission path (light path), otherwise refusal is set up light transmission path and attempt using other route to rebulid again.

The method that " based on the mode of route " taked is mainly: to Routing Protocol such as the ospf-traffic engineering (OSPF-TE of GMPLS, Open Shortest Path First-TE) agreement is expanded, except comprising the TE attribute, also need to comprise physics signal impairment parameter information.

In the network of reality, in order to improve the scalability of network, in network, be provided with many adjustable unit toward contact, as the optical power adjustment unit, dispersion adjustment unit etc., set up in the process at light transmission path, whether destination node conforms to the QoS of service request according to the physical signalling impairment parameter verification of collecting, conform to and then set up, and after setting up successfully, according to the network performance monitoring data of collecting,, network is regulated dynamically and monitored by regulating the physical signalling impairment parameter of adjustable unit.Do not have to consider in setting up the process of light transmission path, these adjustable unit to be taken into account, the physical signalling impairment parameter of collecting not with situation that the QoS of service request conforms under, can not send to source node selects another route as current route messages from optional route, but signal quality is conformed to the QoS of service request by the physical signalling impairment parameter of regulating adjustable unit, signal quality on the light transmission path of foundation is reached or near the QoS of service request, thereby only avoid judging may carrying out frequently from optional route, selecting another route by needs that the signal quality of light transmission path causes as current route according to existing physical signalling impairment parameter of collecting, caused waste of network resources, even caused light transmission path to set up failure because of finding adequate resources.Simultaneously, at present the user mainly still adjusts the adjustable parameter in the network by the mode of adjusting manually when safeguarding the connection of having set up, such maintenance complexity, easily make mistakes, and cost is high.

Summary of the invention

In view of this, a main purpose of the embodiment of the invention is to provide a kind of method of setting up wavelength path, improves the success rate that wavelength path is set up.

Another purpose of the embodiment of the invention is to provide a kind of equipment of setting up wavelength path, improves the success rate that wavelength path is set up.

Another purpose of the embodiment of the invention is to provide a kind of system that sets up wavelength path, improves the success rate that wavelength path is set up.

Another purpose of the embodiment of the invention is to provide a kind of maintenance to set up the method for wavelength path, reduces to connect the complexity of safeguarding in the network.

Another purpose of the embodiment of the invention is to provide a kind of maintenance to set up the equipment of wavelength path, reduces to connect the complexity of safeguarding in the network.

Another purpose of the embodiment of the invention is to provide a kind of maintenance to set up the system of wavelength path, reduces to connect the complexity of safeguarding in the network.

For achieving the above object, the technical scheme of the embodiment of the invention specifically is achieved in that

A kind of method of setting up wavelength path, this method comprises:

Source node calculates the optional route from self to destination node, therefrom selects a route to send signaling message as current route;

Each node of signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information;

After destination node has been upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies default destination node signal quality threshold value, be that then current each node of route is set up wavelength path by described current route, otherwise further judging whether can be by regulating physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, make signal quality satisfy described destination node signal quality threshold value, can carry out the adjusting of physical signalling impairment parameter by then current route interdependent node, current then each node of route is set up wavelength path by current route.

A kind of node device, this node device comprise receiver module, sending module, judge module, processing module, reach routing selecting module, wherein,

Receiver module is used to receive message, is sent to judge module;

Judge module is used to receive the message that receiver module sends, and judges that message is RESV or notice message, if message is RESV, is sent to processing module, if message is notice message, is sent to routing selecting module;

Processing module, be used to receive the message that judge module sends, the physical signalling impairment parameter regulated quantity information that the calculating that comprises according to described message is good, carrying out corresponding physical signalling impairment parameter regulates, and reserved resource, if comprising, message do not calculate good physical signalling impairment parameter regulated quantity information, reserved resource, send signaling message to sending module, comprise the physical signalling impairment parameter of self, adjustable physical signalling damage range parameter and routing iinformation;

Routing selecting module is used to receive the message that judge module sends, and selects a route as current route from optional route, is sent to processing module with calculating good routing iinformation;

Sending module is used for the signaling message that receiving processing module sends, and signaling message is sent.

A kind of node device, this node device comprises receiver module, processing module, judge module and sending module, wherein,

Receiver module is used to receive message, is sent to processing module;

Processing module is used to receive the message that receiver module sends, and physical signalling impairment parameter and adjustable physical signalling damage range parameter update message by node device self are sent to judge module;

Judge module, be used to receive message from processing module, judge according to the physical signalling impairment parameter that comprises in the signaling message whether the message signale quality satisfies default signal quality threshold value, be then to send RESV to sending module, otherwise further judging whether can be by regulating physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, make signal quality satisfy described signal quality threshold value, can then send RESV to sending module, RESV comprises the nodal information that calculates good physical signalling impairment parameter regulated quantity and calculate good physical signalling impairment parameter correspondence, otherwise, send notice message to sending module;

Sending module is used to send RESV or notice message.

A kind of system that sets up wavelength path, this system comprises: source node and destination node, wherein,

Source node, be used for definite optional route from self to destination node, therefrom select a route as current route, send signaling message, wherein, each node of signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information; Receive message, calculate good physical signalling impairment parameter regulated quantity information if message comprises, carry out respective physical signal impairment parameter regulation, resource reservation does not calculate good physical signalling impairment parameter regulated quantity information if message comprises, and carries out resource reservation;

Destination node, be used to receive message, physical signalling impairment parameter and adjustable physical signalling damage range parameter information by self upgrade signaling message, after having upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies default destination node signal quality threshold value, be then to send RESV, each node of current route is set up wavelength path by current route, otherwise further judging whether can be by regulating physics signal impairment parameter in adjustable physical signalling damage range, make signal quality satisfy destination node signal quality threshold value, can then send RESV, comprise the good physical signalling impairment parameter regulated quantity information of calculating, notify in the current route interdependent node to carry out the physical signalling impairment parameter and regulate, current then each node of route is set up wavelength path by current route.

A kind of method of maintaining wavelength path comprises:

When monitoring node monitors parameter when being equal to or less than default monitoring node signal quality threshold value, described monitoring node announcement is adjusted start node and is begun to carry out parameter adjustment;

After described adjustment start node is received announcement, send signaling message to described monitoring node;

Each node of described signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information;

Computing unit according to physical signalling impairment parameter that comprises in the signaling message and adjustable physical signalling damage range parameter information, calculates the parameter regulation data after receiving and upgrading signaling message;

Described monitoring node and each node of adjusting between the start node are adjusted parameter according to described parameter regulation data.

A kind of node device comprises:

Receiver module is used to receive message, and this message comprises parameter regulation information or signaling message;

Processing module is used to receive the message that described receiver module sends, if parameter regulation information is then carried out corresponding physical signalling impairment parameter and regulated; If signaling message, then pass through the physical signalling impairment parameter and the described signaling message of adjustable physical signalling damage range parameter update of node device self, judge according to the physical signalling impairment parameter that comprises in the signaling message after upgrading, judge whether described message signale quality satisfies default signal quality threshold value, if judged result is for being the signaling message after then transmission is upgraded; Otherwise, send notice message;

Sending module is used for the signaling message after receiving processing module is handled, according to the judged result of processing module, if judged result is for being the signaling message after then transmission is upgraded; Otherwise, send notice message.

A kind of node device comprises receiver module, sending module, judge module, processing module, reaches routing selecting module, wherein,

Receiver module is used to receive message, is sent to described judge module;

Judge module is used to receive the message that described receiver module sends, and judges that described message is parameter regulation message or notice message, if described message is parameter regulation message, be sent to processing module,, be sent to routing selecting module if described message is notice message.

Processing module is used to receive the message that judge module sends, and the physical signalling impairment parameter regulated quantity that the calculating that comprises according to described message is good is carried out corresponding physical signalling impairment parameter and regulated.

Routing selecting module is used to receive the message that judge module sends, from optional access by route of selection as current route, be sent to described processing module with calculating good routing iinformation;

A kind of system of maintaining wavelength path comprises: monitoring node and adjustment start node, wherein,

Monitoring node, be used to receive signaling message from a last node, physical signalling impairment parameter and adjustable physical signalling damage range parameter information by self upgrade described signaling message, after having upgraded the described signaling message that receives, according to the physical signalling impairment parameter that comprises in the described signaling message, judge whether the signaling message signal quality that receives satisfies monitoring node signal quality threshold value, be then to send described signaling message to next node, otherwise send notice message to adjusting start node, notice is adjusted the maintenance that start node begins to carry out parameter adjustment;

Adjust start node, be used to receive the advertised information that described monitoring node sends, determine from self to described monitoring node optional access by, therefrom select a route as current route, send signaling message, comprise self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information, send to next node.

As seen from the above technical solution, a kind of method of setting up wavelength path of the embodiment of the invention, equipment and system, by in setting up the process of wavelength path with wavelength path on the adjustable physical signalling impairment parameter scope of adjustable unit take into account, signaling is collected the adjustable physical signalling impairment parameter and the range parameter thereof of each adjustable unit in the path along the road, each node of signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information, destination node is when judging that the signaling message signal quality can not satisfy destination node signal quality threshold value, judging whether can be by regulating physics signal impairment parameter in adjustable physical signalling damage range, make signal quality satisfy destination node signal quality threshold value, then interdependent node carries out the adjusting of physical signalling impairment parameter, thereby improves the success rate of utilization rate of network resource and wavelength path foundation.Simultaneously, the method of a kind of maintaining wavelength path of the embodiment of the invention, the adjustable physical signalling impairment parameter scope of adjustable unit will take into account on the wavelength path by monitoring in maintenance process, when monitoring node when judging that the monitoring parameter signal quality can not satisfy the default signal quality threshold value of monitoring node, the monitoring node announcement is adjusted start node and is begun to carry out the parameter adjustment maintenance, adjust start node and send signaling message to monitoring node, this signaling is collected the adjustable physical signalling impairment parameter and the range parameter thereof of each adjustable unit in the monitoring path along the road, each node of signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information, computing unit calculates the parameter regulation data according to the renewal signaling message of receiving, and each node on the way between monitoring node and adjustment start node sends described signaling message, each node is adjusted parameter according to the parameter regulation data that comprise in the described signaling message, connects the complexity of safeguarding in the network thereby reduce.

Description of drawings

Fig. 1 a is the system configuration schematic diagram that the embodiment of the invention is set up wavelength path.

Fig. 1 b is the structural representation of embodiment of the invention source node.

Fig. 1 c is the structural representation of embodiment of the invention intermediate node.

Fig. 1 d is another structural representation of embodiment of the invention intermediate node.

Fig. 1 e is the structural representation of embodiment of the invention destination node.

Fig. 2 is the system configuration schematic diagram of the embodiment of the invention one, three foundation and maintaining wavelength path.

Fig. 3 sets up the method flow schematic diagram of wavelength path for the embodiment of the invention two.

Fig. 4 a is the system configuration schematic diagram of embodiment of the invention maintaining wavelength path.

Fig. 4 b is the structural representation of embodiment of the invention monitoring node.

Fig. 4 c is another structural representation of embodiment of the invention monitoring node.

Fig. 4 d is the structural representation of embodiment of the invention intermediate node.

Fig. 4 e is the structural representation that the embodiment of the invention is adjusted start node.

Fig. 5 is the method flow schematic diagram of embodiment of the invention maintaining wavelength path.

Fig. 6 protects the system configuration schematic diagram of wavelength path for the embodiment of the invention four-dimension.

Embodiment

For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.

The embodiment of the invention be by in setting up the process of wavelength path with wavelength path on the adjustable physical signalling impairment parameter scope of adjustable unit take into account, the Routing Protocol of GMPLS is not made amendment, on the method for original " based on means of signaling ", be optimized, the existing route computing method of foundation calculates can be selected route and select a route as current route, each node of signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information, after destination node has been upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies default destination node signal quality threshold value, be that then current each node of route is set up wavelength path by described current route, otherwise further judging whether can be by regulating physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, make signal quality satisfy described destination node signal quality threshold value, can then notify in the described current route interdependent node to carry out the physical signalling impairment parameter and regulate, current then each node of route is set up wavelength path by described current route.Set up the wavelength path method for " based on the mode of route ",, do not repeat them here owing to do not belong to the scope that the embodiment of the invention relates to.

To achieve these goals, the embodiment of the invention has proposed a kind of system that sets up wavelength path.

Fig. 1 a is the system configuration schematic diagram that the embodiment of the invention is set up wavelength path.Referring to Fig. 1 a, this system comprises: source node 11, intermediate node 12 and destination node 13, wherein,

Source node 11, be used for determining from self to destination node 13 optional route, therefrom select a route, send signaling message as current route, comprise self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information, send to next node; Receive the RESV that next node sends, if RESV comprises the good physical signalling impairment parameter regulated quantity information of calculating, carry out respective physical signal impairment parameter regulation and resource reservation, do not calculate good physical signalling impairment parameter regulated quantity information if the RESV that receives comprises, carry out resource reservation; Receive the notice message that destination node 13 sends, from optional route, select another route as current route;

Intermediate node 12, be used to receive the signaling message of node transmission and the RESV that next node sends, if be signaling message, by physical signalling impairment parameter and the adjustable physical signalling damage range parameter update signaling message of self, be sent to next node, if be RESV, and RESV comprises the good physical signalling impairment parameter regulated quantity information of calculating, then carry out respective physical signal impairment parameter regulation and reserved resource and transmit the supreme node of RESV, do not calculate good physical signalling impairment parameter regulated quantity information if RESV comprises, carry out resource reservation and transmit the supreme node of RESV;

Destination node 13, default destination node signal quality threshold value, be used to receive signaling message from a last node, physical signalling impairment parameter and adjustable physical signalling damage range parameter information by self upgrade signaling message, after having upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies destination node signal quality threshold value, it is the node transmission RESV that then makes progress, otherwise further judge whether by in adjustable physical signalling damage range, regulating physics signal impairment parameter, make signal quality can satisfy destination node signal quality threshold value, be then the physical signalling impairment parameter to be regulated, upwards a node sends RESV, RESV comprises the good physical signalling impairment parameter regulated quantity information of calculating, otherwise, sending notice message to source node 11, notification source node 11 selects another route as current route from optional route.

Fig. 1 b is the structural representation of embodiment of the invention source node.Referring to Fig. 1 b, wherein, source node 11 comprises receiver module 111, processing module 112, judge module 114, routing selecting module 115 and sending module 116, wherein,

Receiver module 111 is used to receive message, is sent to judge module 114;

Judge module 114 is used to receive the message that receiver module 111 sends, and judges that message is RESV or notice message, if message is RESV, send to processing module 112,, send to routing selecting module 115 if message is notice message;

Processing module 112, be used to receive the message that judge module 114 sends, if message comprises the good physical signalling impairment parameter regulated quantity information of calculating, carry out respective physical signal impairment parameter regulation, and reserved resource, if comprising, message do not calculate good physical signalling impairment parameter regulated quantity information, reserved resource; Send signaling message to sending module 116, comprise the physical signalling impairment parameter of self, adjustable physical signalling damage range parameter and routing iinformation;

Routing selecting module 115 is used to receive the notice message that judge module 114 sends, and selects a route as current route from optional route, is sent to processing module 112 with calculating good routing iinformation;

Sending module 116 is used for the signaling message that receiving processing module 112 sends, and signaling message is sent.

Fig. 1 c is the structural representation of embodiment of the invention intermediate node.Referring to Fig. 1 c, intermediate node 12 comprises receiver module 121, processing module 122 and sending module 126, wherein,

Receiver module 121 is used to receive message, is sent to processing module 122;

Processing module 122, be used to receive the message that receiver module 121 sends, if message is signaling message,, the signaling message after upgrading is sent to sending module 126 by the physical signalling impairment parameter and the adjustable physical signalling damage range parameter update signaling message of node device self; If message is RESV, whether comprise the good physical signalling impairment parameter regulated quantity information of calculating according to RESV, if RESV comprises the good physical signalling impairment parameter regulated quantity information of calculating, carry out behind respective physical signal impairment parameter regulation and the resource reservation RESV being sent to sending module 126, do not calculate good physical signalling impairment parameter regulated quantity information if RESV comprises, carry out behind the resource reservation RESV being sent to sending module 126;

Sending module 126 is used for signaling message and RESV that receiving processing module 122 sends, sends.

In the practical application, intermediate node 12 can also comprise judge module 124;

Fig. 1 d is another structural representation of embodiment of the invention intermediate node.Referring to Fig. 1 d, intermediate node 12 comprises receiver module 121, processing module 122, judge module 124 and sending module 126, wherein,

Processing module 122, be used to receive the message that receiver module 121 sends, if message is signaling message,, the signaling message after upgrading is sent to judge module 124 by the physical signalling impairment parameter and the adjustable physical signalling damage range parameter update signaling message of node device self; If message is RESV, whether comprise the good physical signalling impairment parameter regulated quantity information of calculating according to RESV, if RESV comprises the good physical signalling impairment parameter regulated quantity information of calculating, carry out behind respective physical signal impairment parameter regulation and the resource reservation RESV being sent to sending module 126, do not calculate good physical signalling impairment parameter regulated quantity information if RESV comprises, carry out behind the resource reservation RESV being sent to sending module 126;

Judge module 124, the signaling message that is used for receiving processing module 122 outputs, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signal quality that receives satisfies default destination node signal quality threshold value, be then to sending module 126 transmitting signaling message, otherwise further judging whether can be by regulating physics signal impairment parameter in adjustable physical signalling damage range, make signal quality satisfy destination node signal quality threshold value, can be then to sending module 126 transmitting signaling message, if cannot, then send notice message to sending module 126, notification source node 11 selects another route as current route from optional route;

Sending module 126 is used to receive the RESV that signaling message, notice message and processing module 122 that judge module 124 sends send, and sends.

Fig. 1 e is the structural representation of embodiment of the invention destination node.Referring to Fig. 1 e, destination node 13 comprises receiver module 131, processing module 132, judge module 134 and sending module 136, wherein,

Receiver module 131 is used to receive message, is sent to processing module 132;

Processing module 132, be used to receive the signaling message of receiver module 131 transmissions and the RESV that judge module 134 sends, if be signaling message, physical signalling impairment parameter and adjustable physical signalling damage range parameter update signaling message by node device self are sent to judge module 134; If be RESV, whether comprise the good physical signalling impairment parameter regulated quantity information of calculating according to RESV, if RESV comprises the good physical signalling impairment parameter regulated quantity information of calculating, carry out behind respective physical signal impairment parameter regulation and the resource reservation RESV being sent to sending module 136, do not calculate good physical signalling impairment parameter regulated quantity information if RESV comprises, carry out behind the resource reservation RESV being sent to sending module 136;

Judge module 134, be used for the signaling message that receiving processing module 132 sends, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies default destination node signal quality threshold value, be then to send RESV to processing module 132, otherwise further judging whether can be by regulating physics signal impairment parameter in adjustable physical signalling damage range, make signal quality satisfy destination node signal quality threshold value, be then the physical signalling impairment parameter to be regulated, send RESV to processing module 132, comprise the good physical signalling impairment parameter regulated quantity information of calculating, otherwise, send notice message to sending module 136;

Sending module 136 is used for the RESV of receiving processing module 132 transmissions and the notice message that judge module 134 sends, and sends.

Below for two example two, the specific embodiment of the present invention is elaborated.

Embodiment one:

Fig. 2 sets up the system configuration schematic diagram of wavelength path for the embodiment of the invention one.Referring to Fig. 2, in the present embodiment, network comprises five network element (NE, Network Element), be respectively NE A, NE B, NE C, NE D and NE E, NE A links to each other respectively with NE D with NE B, NE E links to each other respectively with NE D with NE C, and NE B links to each other respectively with NE D with NE A, NE C, and NE C links to each other respectively with NE E with NE B, NE D.NE A is the source network unit, NE E is the purpose network element, and the hypothesis luminous power is the physical signalling impairment parameter of the unique consideration of the embodiment of the invention, variable optical attenuation unit (VOA, Variable Optical Attenuator) is the unit that adjustable physical signalling impairment parameter is regulated of unique consideration.

If NE is A, between the NE E connection request is arranged, the received signal luminous power that NE E requires can not be lower than-18dbm.According to aforementioned, do not consider the physical signalling damage the routing algorithm from NE A to NE E, suppose that it is current route that algorithm computation based on OSPF-TE goes out the A-D-E path, the optical power value parameter and the luminous power adjustable extent parameter that comprise self in the signaling RSVP-TE PATH message of NE A in setup message, the network element of each process, before transmitting signalling message, optical power value parameter and luminous power adjustable extent parameter update signaling message by self unit, in the present embodiment, only through intermediate network elements NE D, NE D is by the optical power value parameter and the luminous power adjustable extent parameter update signaling message of self network element, export NE E to, NE E is by self optical power value parameter and luminous power adjustable extent parameter update signaling message, after NE E had upgraded the signaling message that receives, the luminous power threshold value parameter that requires according to the optical power value parameter that comprises in the signaling message and NE E compared;

Suppose that NE E judges that the luminous power that receives is-17dbm, be higher than luminous power threshold value-18dbm that NE E requires, then current each node of route is set up wavelength path by current route;

Suppose that NE E judges that the luminous power that receives is-20dbm, be lower than luminous power threshold value-18dbm that NE E requires, but NE E judges by the luminous power adjustable extent parameter at the signaling message that receives, thereby the optical power value that can NE E be received by the light decay 2db that regulates NE D can reach on the luminous power threshold value of NE E requirement, in the practical application, also can pass through to regulate NE A or any two network element of NE E or three network element or the light decay of all three network element, thereby the optical power value that NE E is received can reach on the luminous power threshold value of NE E requirement.Thereby, NE E sends RESV, (need carry out certain expansion as signaling RSVP-TE RESV message to the RESV message format of former RSVP-TE, as follows), RSVP-TE RESV message is beamed back NE A along E-D-A, each node carries out reserved resource in the current route, and its interdependent node carries out light decay to be regulated in the variable optical attenuation unit of corresponding network unit;

Suppose that NE E judges that the luminous power that receives is-30dbm, be lower than luminous power threshold value-18dbm that NE E requires, and NE E is by contrast NE A, NE D, the luminous power adjustable extent of NE E, in any case find to regulate that the received optical power value of NE E is reached-more than the 18dbm, this moment, NE E was by notification message notice NE A, NE A receiving notice message, reselecting a route calculates, suppose that this moment, NE A selected route A-B-C-E, after the same method, NE A produces signaling RSVP-TE PATH message, message comprises optical power value parameter and the luminous power adjustable extent parameter of self, the network element of each process, before transmitting signalling message, optical power value parameter and luminous power adjustable extent parameter update signaling message by self network element, after NE E has upgraded the signaling message that receives, luminous power threshold value parameter according to optical power value parameter that comprises in the signaling message and NE E requirement compares, suppose that NE E judges that the luminous power that receives is-25dbm, be lower than luminous power threshold value-18dbm that NE E requires, but can carry out optical power adjustment by the VOA of NE A and NE C, thereby the optical power value that NE E is received can reach more than the luminous power threshold value-18dbm of NE E requirement, thereby, RSVP-TE RESV message is beamed back NE A along E-C-B-A, each node NE E in the current route, NE C, NE B, NE A carries out reserved resource, and the VOA of NE A and NE C regulates light decay.

Suppose that NE E judges that the luminous power that receives is-25dbm, be lower than luminous power threshold value-18dbm that NE E requires, but can be by regulating NE E, the light decay value of NE D and NE A reaches more than the luminous power threshold value-18dbm of NE E requirement the luminous power reception value of NE E, thereby, NE E carries out the luminous power parameter regulation by notification message notice NE A, current route recomputates the optical power value parameter, NE A receiving notice message, produce signaling RSVP-TE PATH message, the network element of each process, before transmitting signalling message, VOA by the present networks unit, on the recommended value of optical power adjustment in the notification message, optical power value by the present networks unit upgrades signaling message then, after NE E has upgraded the signaling message that receives, luminous power threshold value parameter according to optical power value parameter that comprises in the signaling message and NE E requirement compares, if NE E judges the luminous power that receives this moment and is-17dbm, be higher than luminous power threshold value-18dbm that NE E requires, then NE E sends RSVP-TE RESV message and beams back NE A along E-D-A, and each node carries out reserved resource in the current route; If NE E judges the luminous power that receives and still is lower than luminous power threshold value-18dbm that NE E requires that then NE E notice NE A selects another route as current route again from optional route.

The adjustable physical signalling damage range parameter of Kao Lving is a plurality of if desired, has certain correlation between a plurality of parameters, then the purpose network element is regulated the adjustable physical signalling damage range parameter of a plurality of correlations according to certain strategy and algorithm, to set up preferable wavelength path.

Embodiment two:

Fig. 3 sets up the method flow schematic diagram of wavelength path for the embodiment of the invention two.Referring to Fig. 3, this flow process comprises:

Step 301 is calculated the optional route from the source node to the destination node, therefrom selects a route to send signaling message as current route;

In this step, set in advance destination node signal quality threshold value, do not consider the various physical signalling impairment parameter in the network, calculate the optional route from the source node to the destination node and from optional route, select a route according to TE Link parameter and existing route computing method, send signaling message as current route.

Step 302, each node of signaling message process upgrades signaling message by self physical signalling impairment parameter and adjustable physical signalling damage range parameter information;

In this step, need carry out certain expansion to the PATH message format of former RSVP-TE, in describing below, message after RSVP-TE PATH message is all represented the PATH message format of former RSVP-TE necessarily expanded, the physical signalling impairment parameter and the adjustable physical signalling damage range parameter that comprise self in the signaling RSVP-TE PATH information of source node in setup message, intermediate node is before transmitting signalling message, by the physical signalling impairment parameter and the adjustable physical signalling damage range parameter update signaling message of this node, until destination node.

In the practical application, physical signalling impairment parameter and adjustable physical signalling damage range parameter can be one to one, and be corresponding with the adjustable light power range parameter as the luminous power parameter; Can not one to one also, non-adjustable as the physical signalling impairment parameter that is provided with, then there is not corresponding adjustable physical signalling damage range parameter.Each node can be to carry out according to setting in advance by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information renewal signaling message.

In the practical application, along current route transmission signaling message the time, each node upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information, also can reserve each node resource simultaneously, node resource is taken earlier, to avoid follow-up in the time can setting up wavelength path, this node resource is but set up the situation that the wavelength path request takies by other.

Step 303, after destination node has been upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signal quality that receives satisfies destination node signal quality threshold value, be that then current each node of route is set up wavelength path by current route, if do not satisfy execution in step 304;

In this step, destination node receives the signaling RSVP-TE PATH information of coming by current route propagation, physical signalling impairment parameter information and adjustable physical signalling damage range parameter information by self upgrade signaling message, the method of upgrading signaling message can be that the physical signalling impairment parameter is added up, also can be to preserve the physical signalling impairment parameter, add up by destination node, and with adjustable physical signalling damage range parameter storage, destination node is judged according to the physical signalling impairment parameter of upgrading, if the signal quality of destination node satisfies destination node signal quality threshold value, send RESV to source node; If do not satisfy destination node signal quality threshold value, execution in step 304.

If in step 302, reserved the resource of each node, if then the signal quality of destination node satisfies destination node signal quality threshold value, directly send the resource reservation success message to source node, and do not need to reserve again step along the circuit node resource, if do not satisfy destination node signal quality threshold value, execution in step 304.

Step 304, judge according to the adjustable physical signalling damage range parameter information that comprises in the signaling message, if can satisfy destination node signal quality threshold value by signal quality after the parameter regulation, then notify each node to pass through RESV, RESV comprises the nodal information that calculates good physical signalling impairment parameter regulated quantity and calculate good physical signalling impairment parameter regulated quantity correspondence, the node of the physical signalling impairment parameter regulated quantity correspondence that current route interdependent node promptly calculates carries out the adjusting of physical signalling impairment parameter or carries out parameter regulation by the parameter information that the resource reservation success message comprises, if can not satisfy, then from optional route, select another route as current route again, execution in step 301 by notice message notification source node.

In this step, parameter regulation can be that a part of parameter in the adjustable physical signalling damage range parameter is regulated, also can be that the adjustable physical signalling damage range of all nodes parameter in the whole current route is regulated, a plurality of adjustable physical signalling damage range parameters have correlation, destination node is regulated according to its correlation at last, and the concrete grammar of adjusting can be by strategy and the corresponding algorithm decision of destination node according to self; RESV can be by the resource reservation (RESV of expansion RSVP-TE agreement, Resource Reservation Protocol) message realizes, along returning source node with the path of current route contrary, simultaneously, each node reserved resource of current route and carry out the physical signalling impairment parameter in node corresponding and regulate.

Still can not satisfy the signal quality threshold value if destination node is judged after signal quality is by parameter regulation, can directly send notice message to source node, the notification source node selects another route as current route from optional route.

If in step 302, reserved the resource of each node, if then by in adjustable physical signalling damage range, regulating physics signal impairment parameter, make signal quality can satisfy destination node signal quality threshold value, notifying in the current route interdependent node to carry out the physical signalling impairment parameter regulates, send the resource reservation success message to source node, current then each node of route is set up wavelength path according to described reserved resource by described current route, otherwise, send notice message to source node, to discharge the reserved resource of each node.

In addition, if between source node and destination node, comprise intermediate node, intermediate node also can be initiated the judgement to the signal quality that receives, when judging that the signal quality that receives can not satisfy quality of service requirement by the adjusting of physical signalling impairment parameter, send notice message to source node, requirement selects another route as current route from optional route, only, just signaling message is continued toward the transmission of destination node direction judging that the signal quality that receives satisfies under the situation of quality of service requirement.

If in the step 302 along current route transmission signaling message the time, each node is reserved each node resource when upgrading signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information, then step 304 is: after destination node has been upgraded the signaling message that receives, judge according to the physical signalling impairment parameter that comprises in the signaling message whether the signal quality that receives satisfies destination node signal quality threshold value, be that then current each node of route is set up wavelength path by current route, otherwise further judge, whether can be by in the adjustable physical signalling damage range of the signaling message that receives, regulating physics signal impairment parameter, make signal quality satisfy described destination node signal quality threshold value, if regulate by the physical signalling impairment parameter, make signal quality satisfy destination node signal quality threshold value, then notifying in the current route interdependent node to carry out the physical signalling impairment parameter regulates, current then each node of route is set up wavelength path by current route, if can not satisfy, then from optional route, select another route as current route, and each node resource that will reserve discharge by notice message notification source node.

In the practical application, in step 304, in order to increase the reliability that wavelength path is set up, in RESV, comprise the good physical signalling impairment parameter regulated quantity information of calculating, calculate the nodal information and the wavelength path re-examination card information of good physical signalling impairment parameter regulated quantity correspondence, when intermediate node of source node or current route is returned with the path of current route contrary in the RESV edge, the physical signalling impairment parameter of regulating is included in the RESV, the adjustable physical signalling damage range parameter of calculating according to destination node is carried out parameter regulation at the node that calculates good physical signalling impairment parameter regulated quantity correspondence simultaneously, also can be directly announce a intermediate node to source node or current route from destination node, an intermediate node of source node or current route receives the RESV that comprises wavelength path re-examination card information, each node of current route is along current route transmitting signalling message again, an intermediate node of source node or current route upgrades signaling message once more along aforesaid path, destination node is after having upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judging whether the signaling message signal quality that receives can satisfy destination node signal quality threshold value, is that then current each node of route is set up wavelength path by current route; If cannot, promptly the signaling message signal quality of Jie Shouing does not satisfy destination node signal quality threshold value, also can further judge whether can be by regulating physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, make signal quality satisfy described destination node signal quality threshold value, can carry out the adjusting of physical signalling impairment parameter by then described current route interdependent node, described then each node of current route is set up wavelength path by described current route; If cannot, then the notification source node selects another route as current route from optional route.Can further verify like this reliability of wavelength path, especially under the more situation of the adjustable physical signalling damage range parameter that needs are regulated, just owing to consider that physical factor is more and may cause under the not high situation of the wavelength path reliability set up, once more current route is carried out reliability demonstration, increased the reliability that wavelength path is set up.

To achieve these goals, the embodiment of the invention has also proposed a kind of system of maintaining wavelength path.

Fig. 4 a is the system configuration schematic diagram of embodiment of the invention maintaining wavelength path.Referring to Fig. 4 a, this system comprises: monitoring node 41, intermediate node 42 and adjustment start node 43, wherein,

Monitoring node 41, default monitoring node signal quality threshold value, be used to receive signaling message from a last node, physical signalling impairment parameter and adjustable physical signalling damage range parameter information by self upgrade signaling message, after having upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies monitoring node signal quality threshold value, be then to send signaling message to next node, otherwise send notice message to adjusting start node 43, notice is adjusted the maintenance that start node 43 begins to carry out parameter adjustment.And can carry out corresponding physical signalling impairment parameter according to the parameter regulation data of receiving regulates.

Intermediate node 42 is used to receive the signaling message that a node sends, and physical signalling impairment parameter and adjustable physical signalling damage range parameter update signaling message by self are sent to next node.

Adjust start node 43, be used to receive the advertised information that monitoring node 41 sends, determine from self to monitoring node 41 optional access by, therefrom select a route as current route, send signaling message, the physical signalling impairment parameter information and the adjustable physical signalling damage range parameter information that comprise self send to next node, and can carry out corresponding physical signalling impairment parameter according to the parameter regulation data of receiving and regulate.

Fig. 4 b is the structural representation of embodiment of the invention monitoring node 41.Referring to Fig. 4 b, monitoring node 41 comprises receiver module 411, processing module 412, judge module 414 and sending module 416, wherein,

Receiver module 411 is used to receive message, is sent to processing module 412;

Processing module 412 is used to receive the message that receiver module 411 sends, and this message comprises parameter regulation information or signaling message, if parameter regulation information is then carried out corresponding physical signalling impairment parameter and regulated; If signaling message then by the physical signalling impairment parameter and the described message of adjustable physical signalling damage range parameter update of node device self, is sent to judge module 414;

Judge module 414, be used to receive message from processing module 412, judge according to the physical signalling impairment parameter that comprises in the signaling message whether described message signale quality satisfies default signal quality threshold value, be then signaling message directly to be sent to sending module 416, otherwise send notice message to sending module 416;

Sending module 416 is used to send signaling message or notice message.

In another case, monitoring node 41 also comprises computing module 415.

Fig. 4 c is another structural representation of embodiment of the invention monitoring node 41.Referring to Fig. 4 c, monitoring node 41 comprises monitoring node 41 and comprises receiver module 411, processing module 412, judge module 414, computing module 415 and sending module 416, wherein,

Processing module 412 is used to receive the message that receiver module 411 sends, and this message comprises parameter regulation information or signaling message, if parameter regulation information is then carried out corresponding physical signalling impairment parameter and regulated; If signaling message then by physical signalling impairment parameter and adjustable this signaling message of physical signalling damage range parameter update of node device self, is sent to judge module 414;

Judge module 414, be used to receive message from processing module 412, judge according to the physical signalling impairment parameter that comprises in the signaling message whether described message signale quality satisfies default signal quality threshold value, be then signaling message directly to be sent to sending module 416, otherwise judge whether this signaling message transmits from adjusting start node 43, be then signaling message to be sent to computing module 415, otherwise send notice message to sending module 416;

Computing module 415 is used to receive the signaling message that described judge module 414 sends, and calculates the parameter regulation data according to signaling message, and the signaling message that will comprise described parameter regulation data is sent to sending module 416.

Sending module 416 is used to send signaling message or notice message.

Fig. 4 d is the structural representation of embodiment of the invention intermediate node 42.Referring to Fig. 4 d, intermediate node 42 comprises receiver module 421, processing module 422 and sending module 426, wherein,

Receiver module 421 is used to receive message, is sent to processing module 422;

Processing module 422 is used to receive the signaling message that receiver module 421 sends, and by the physical signalling impairment parameter and the adjustable physical signalling damage range parameter update signaling message of node device self, the signaling message after upgrading is sent to sending module 426.

Sending module 426 is used for signaling message that receiving processing module 422 sends and it is sent.

Fig. 4 e is the structural representation that the embodiment of the invention is adjusted start node.Referring to Fig. 4 e, wherein, adjust start node 43 and comprise receiver module 431, processing module 432, judge module 434, routing selecting module 435 and sending module 436, wherein,

Receiver module 431 is used to receive message, is sent to judge module 434;

Judge module 434 is used to receive the message that receiver module 431 sends, and judge message be parameter regulation information or or notice message, if parameter regulation information sends to processing module 432; Then carrying out corresponding physical signalling impairment parameter regulates; If signaling message then by physical signalling impairment parameter and adjustable this signaling message of physical signalling damage range parameter update of node device self, is sent to judge module 414; If message is notice message, send to routing selecting module 435;

Processing module 432 is used to receive the message that judge module 434 sends, and carries out respective physical signal impairment parameter regulation; Send signaling message to sending module 436, comprise the physical signalling impairment parameter of self, adjustable physical signalling damage range parameter and routing iinformation;

Routing selecting module 435 is used to receive the notice message that judge module 434 sends, from optional access by route of selection as current route, be sent to processing module 432 with calculating good routing iinformation;

Sending module 436 is used for the signaling message that receiving processing module 432 sends, and signaling message is sent.

In order to realize another purpose, the embodiment of the invention has proposed a kind of method of maintaining wavelength path.

Fig. 5 safeguards the method flow schematic diagram of wavelength path for the embodiment of the invention three.Referring to Fig. 5, this flow process comprises:

Step 501 judges that monitoring node monitors parameter and whether satisfies default monitoring node signal quality threshold value, if do not satisfy condition, then execution in step 502, if satisfy condition, turn back to step 501.

In this step, monitoring node can be the arbitrary node except source node, and general default configuration is a destination node, and the threshold value of the pre-configured monitoring of meeting on monitoring node.Do not satisfy default monitoring node signal quality threshold value if monitoring node monitors parameter, can notify user side yet, bring in by the user and judge whether to begin parameter adjustment.

Step 502, the maintenance that start node begins to carry out parameter adjustment is adjusted in the monitoring node announcement.

In this step, adjust start node and can be monitoring node to the arbitrary node between the source node, but adjust start node and monitoring node can not be same node, general default configuration is a source node.

Step 503 is adjusted start node and is sent signaling message to monitoring node.

In actual applications, adjust signaling message that start node sends to monitoring node and generally adopt Path message among the RSVP-TE.

Step 504, each node of signaling message process upgrades signaling message by self physical signalling impairment parameter and adjustable physical signalling damage range parameter information.

Step 505, computing unit according to physical signalling impairment parameter that comprises in the signaling message and adjustable physical signalling damage range parameter information, calculate the parameter regulation data after receiving and upgrading signaling message.

In this step, computing unit can be that monitoring node also can be the centralized calculation unit.The renewal signaling message of physical signalling impairment parameter that wherein, comprises and adjustable physical signalling damage range parameter information reports to the centralized calculation unit by monitoring node and calculates.

In practice, computing unit can also send to the user with the parameter regulation data that calculate, and judged whether to receive by the user, and the user also can carry out active correction to the parameter regulation data that described computing unit calculates.

Step 506, computing unit each node between monitoring node and adjustment start node sends parameter regulation data, and each node is adjusted parameter according to the parameter regulation data on the way.

In this step, if computing unit is a monitoring node, then send the signaling message that comprises the parameter regulation data to adjusting start node by monitoring node, through each node on the way in monitoring node and the adjustment start node, after each node receives the signaling message that comprises the parameter regulation data, the parameter of self is adjusted.If computing unit is the centralized calculation unit, then the instruction that will comprise the parameter regulation data by the centralized calculation unit directly is distributed to monitoring node, adjusts each node on the way in start node and monitoring node and the adjustment start node, more than after each node receives the instruction that comprises the parameter regulation data, the parameter of self is adjusted.

Embodiment three:

Fig. 2 safeguards the system configuration schematic diagram of wavelength path for the embodiment of the invention three.Referring to Fig. 2, in the present embodiment, NE A is the source network unit, and NE E is the purpose network element, and the hypothesis luminous power is the physical signalling impairment parameter of the unique consideration of the embodiment of the invention, and VOA is the unit that adjustable physical signalling impairment parameter is regulated of unique consideration.

If there are two access paths from NE A to NE E, be respectively A-D-E and A-D-C-E, and the monitoring node of setting is NE E, monitoring threshold requirement received signal luminous power will surpass-16dbm, and sets NE A for adjusting start node.The parameter value that monitors as monitoring node NE E is equal to or less than-during 16dbm, for example certain constantly NE E monitor the A-D-E luminous power and be-16dbm, the A-D-C-E luminous power is-17dbm, in order to reach the monitoring thresholding, this moment, monitoring node NE E can have 2 kinds of selections, and the one, the maintenance that start node NE A begins to carry out parameter adjustment is adjusted in automatic announcement; The 2nd, this information is reported the user, determine whether to begin the maintenance of parameter adjustment by the user, if the user does not require parameter adjustment and safeguards, unless monitoring information, monitoring node reached the monitoring thresholding, then this incident will exist on user interface always, if the customer requirements parameter adjustment safeguards that then the maintenance that start node NE A begins to carry out parameter adjustment is adjusted in monitoring node NE E announcement.

Adjust start node NE A and send RSVP-TE Path information to monitoring node NE E, this signaling message is collected two along A-D-E with A-D-C-E respectively and is connected each node corresponding physical signal impairment parameter of passing through and adjustable physical signalling damage range parameter information, monitoring node NE E receives the signaling message of this renewal, and calculate the parameter regulation data: make the luminous power of corresponding A-D-E heighten 1db by the light decay 1db that regulates NE D, make the luminous power of corresponding A-D-C-E heighten 2db by the light decay 2db that regulates NE C.In the practical application, also can pass through to regulate NE A or any two network element of NE E or four network element or the light decay of all four network element, thereby the optical power value that NE E is received can reach on the luminous power threshold value of NE E requirement.

After calculating was finished, this moment, monitoring node NE E had two selections again: the one, and the signaling message that directly will comprise the parameter regulation data is back to adjustment start node NE A through E-D-A and E-C-D-A; The 2nd, these parameter regulation data are sent to the user, judge whether to receive by the user, and the user also can carry out active correction to the parameter regulation data, the parameter regulation data of at last user being confirmed are returned monitoring node NE E, and the signaling message that will comprise the parameter regulation data by NE E is back to through E-D-A and E-C-D-A and adjusts start node NE A again.Its interdependent node carries out light decay according to the parameter regulation data to be regulated in the variable optical attenuation unit of corresponding network unit, makes the luminous power of monitoring node NE E satisfy the monitoring threshold requirement.

Embodiment four:

Fig. 6 protects the system configuration schematic diagram of wavelength path for the embodiment of the invention four-dimension.Referring to Fig. 6, in the present embodiment, NE A is the source network unit, NE E is the purpose network element, WG is a webmaster, and the hypothesis luminous power is the physical signalling impairment parameter of the unique consideration of the embodiment of the invention, and VOA is the unit that adjustable physical signalling impairment parameter is regulated of unique consideration.

If there are two access paths from NE A to NE E, be respectively A-D-E and A-D-C-E, and the monitoring node of setting is NE D, monitoring threshold requirement received signal luminous power will surpass-16dbm, and sets NE A for adjusting start node.The parameter value that monitors as monitoring node NE D is equal to or less than-during 16dbm, for example certain moment NE D monitors the A-D-E luminous power and the A-D-C-E luminous power all is-17dbm, in order to reach the monitoring thresholding, this moment, monitoring node NE D can have 2 kinds of selections, and the one, the maintenance that start node NE A begins to carry out parameter adjustment is adjusted in automatic announcement; The 2nd, this information is reported the WG webmaster inform the user, determine whether to begin the maintenance of parameter adjustment by the user, if the user does not require parameter adjustment and safeguards, unless monitoring information, monitoring node reached the monitoring thresholding, then this incident will exist on user interface always, if the customer requirements parameter adjustment safeguards that then the maintenance that start node NE A begins to carry out parameter adjustment is adjusted in monitoring node NE D announcement.

Adjust start node NE A and send RSVP-TE Path information to monitoring node NE D, this signaling message is collected two along A-D-E with A-D-C-E respectively and is connected each node corresponding physical signal impairment parameter of passing through and adjustable physical signalling damage range parameter information, monitoring node NE D receives the signaling message of this renewal and reports the WG webmaster, the WG webmaster receives lastest imformation and calculates the parameter regulation data: make the luminous power of corresponding A-D-E heighten 1db by the light decay 1db that regulates NE D, make the luminous power of corresponding A-D-C-E heighten 1db by the light decay 1db that regulates NE A.In the practical application, also can pass through to regulate the light decay of NE A or NE D or two network element, thereby the optical power value that NE D is received can reach on the luminous power threshold value of NE D requirement.

After the WG webmaster calculated and finishes, this moment, the WG webmaster had two selections: the one, and the instruction that directly will comprise the parameter regulation data is issued to corresponding network element, such as NE A and NE D; The 2nd, these parameter regulation data are sent to the user, judge whether to receive by the user, and the user also can carry out active correction to the parameter regulation data, the parameter regulation data of at last user being confirmed are returned the WG webmaster, and the instruction that will comprise the parameter regulation data by the WG webmaster is issued to corresponding network element again.Its interdependent node carries out light decay according to the parameter regulation data to be regulated in the variable optical attenuation unit of corresponding network unit, makes the luminous power of monitoring node NE D satisfy the monitoring threshold requirement.

More than lift preferred embodiment; the purpose, technical solutions and advantages of the present invention are further described; institute is understood that; the above only is preferred embodiment of the present invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a method of setting up wavelength path is characterized in that, this method comprises:

After described destination node has been upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies default destination node signal quality threshold value, be that then current each node of route is set up wavelength path by described current route, otherwise further judging whether can be by regulating physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, make signal quality satisfy described destination node signal quality threshold value, can carry out the adjusting of physical signalling impairment parameter by then described current route interdependent node, described then each node of current route is set up wavelength path by described current route.

2. the method for claim 1 is characterized in that, described physical signalling impairment parameter comprises: the signal to noise ratio of luminous power size, polarization mode dispersion PMD, chromatic dispersion, amplifier spontaneous radiation ASE or light path or above every combination in any.

3. the method for claim 1 is characterized in that, described method further comprises:

Each node of current route carries out resource reservation before setting up wavelength path by described current route, sets up wavelength path according to described reserved resource by described current route then.

4. the method for claim 1 is characterized in that, described method further comprises:

Each node of current route is reserved node resource simultaneously by self physical signalling impairment parameter and adjustable physical signalling damage range parameter information when upgrading signaling message;

When the signaling message signal quality that destination node receives satisfies default destination node signal quality threshold value, perhaps can be by in adjustable physical signalling damage range, regulating physics signal impairment parameter, make when signal quality satisfies destination node signal quality threshold value, notifying described current route interdependent node to carry out the physical signalling impairment parameter regulates, send the resource reservation success message to source node, current then each node of route is set up wavelength path according to described reserved resource by described current route; Otherwise, send notice message to source node, to discharge the reserved resource of current each node of route.

5. the method for claim 1 is characterized in that, the step that described current route interdependent node carries out the adjusting of physical signalling impairment parameter comprises:

Described destination node is carried out the physical signalling impairment parameter in the adjustable physical signalling damage range of each interdependent node after regulated quantity calculates according to predetermined strategy, send RESV, wherein, described RESV comprises the nodal information that calculates the good physical signalling impairment parameter regulated quantity correspondence of good physical signalling impairment parameter regulated quantity and described calculating;

Described current route interdependent node is regulated described physical signalling impairment parameter, and the RESV after the instrumentality of reserved resource, and the transmission simultaneously reason signal impairment parameter returns source node up to described RESV edge with the path of described current route contrary.

6. as each described method of claim 1 to 5, it is characterized in that this method further comprises:

Described destination node is carried out the physical signalling impairment parameter in the adjustable physical signalling damage range of each interdependent node after regulated quantity calculates according to predetermined strategy, send RESV, wherein, described RESV further comprises wavelength path re-examination card information, described RESV is along returning source node with the path of described current route contrary, source node receives RESV, according to the wavelength path re-examination card information that comprises in the RESV, send signaling message, each node of described signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information;

After described destination node has been upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judging whether the signaling message signal quality that receives satisfies default destination node signal quality threshold value, is that then current each node of route is set up wavelength path by described current route.

7. the method for claim 1, it is characterized in that, this method further comprises: if can not make signal quality satisfy destination node signal quality threshold value by regulate physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, then send notice message to source node, the notification source node selects another route as current route from optional route.

8. the method for claim 1, it is characterized in that, described method further comprises: intermediate node is according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies the destination node signal quality threshold value of storage in advance, be then to send signaling message to next node, otherwise further judging whether can be by regulating physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, make signal quality satisfy described destination node signal quality threshold value, can then send signaling message to next node.

9. method as claimed in claim 8, it is characterized in that, further comprise: if in the adjustable physical signalling damage range of the signaling message that receives, regulate physics signal impairment parameter, signal quality can not satisfy described destination node signal quality threshold value, then send notice message to source node, the notification source node selects another route as current route from optional route.

10. a node device is characterized in that, described node device comprises receiver module, sending module, judge module, processing module, reaches routing selecting module, wherein,

Receiver module is used to receive message, is sent to described judge module;

Judge module is used to receive the message that described receiver module sends, and judges that described message is RESV or notice message, if described message is RESV, be sent to processing module,, be sent to routing selecting module if described message is notice message;

Routing selecting module is used to receive the message that judge module sends, and selects a route as current route from optional route, is sent to described processing module with calculating good routing iinformation;

11. a node device is characterized in that described node device comprises receiver module, processing module, judge module and sending module, wherein,

Receiver module is used to receive message, is sent to processing module;

Processing module is used to receive the message that described receiver module sends, and physical signalling impairment parameter and the described message of adjustable physical signalling damage range parameter update by node device self are sent to judge module;

Judge module, be used to receive message from described processing module, judge according to the physical signalling impairment parameter that comprises in the signaling message whether described message signale quality satisfies default signal quality threshold value, be then to send RESV to sending module, otherwise further judging whether can be by regulating physics signal impairment parameter in the adjustable physical signalling damage range of the signaling message that receives, make signal quality satisfy described signal quality threshold value, can then send RESV to sending module, described RESV comprises the nodal information that calculates the good physical signalling impairment parameter correspondence of good physical signalling impairment parameter regulated quantity and described calculating, otherwise, send notice message to sending module;

Sending module is used to send described RESV or described notice message.

12. a system that sets up wavelength path is characterized in that, this system comprises: source node and destination node, wherein,

Source node, be used for definite optional route from self to destination node, therefrom select a route as current route, send signaling message, wherein, each node of described signaling message process upgrades signaling message by self physical signalling impairment parameter information and adjustable physical signalling damage range parameter information; Receive message, calculate good physical signalling impairment parameter regulated quantity information if message comprises, carry out respective physical signal impairment parameter regulation, resource reservation does not calculate good physical signalling impairment parameter regulated quantity information if message comprises, and carries out resource reservation;

Destination node, be used to receive message, physical signalling impairment parameter and adjustable physical signalling damage range parameter information by self upgrade signaling message, after having upgraded the signaling message that receives, according to the physical signalling impairment parameter that comprises in the signaling message, judge whether the signaling message signal quality that receives satisfies default destination node signal quality threshold value, be then to send RESV, each node of current route is set up wavelength path by described current route, otherwise further judging whether can be by regulating physics signal impairment parameter in adjustable physical signalling damage range, make signal quality satisfy destination node signal quality threshold value, can then send RESV, comprise the good physical signalling impairment parameter regulated quantity information of calculating, notify in the described current route interdependent node to carry out the physical signalling impairment parameter and regulate, current then each node of route is set up wavelength path by described current route.

13. system as claimed in claim 12 is characterized in that, described system further comprises intermediate node,

Intermediate node, be used to receive message, if message is signaling message, by physical signalling impairment parameter and the adjustable physical signalling damage range parameter update signaling message of self, be sent to next node, if message is RESV, whether comprise the good physical signalling impairment parameter regulated quantity information of calculating according to RESV, if RESV comprises the good physical signalling impairment parameter regulated quantity information of calculating, carry out respective physical signal impairment parameter regulation and resource reservation and transmit RESV, do not calculate good physical signalling impairment parameter regulated quantity information if RESV comprises, carry out resource reservation and transmit RESV.

14. the method for a maintaining wavelength path is characterized in that, this maintaining method comprises:

15. maintaining method as claimed in claim 14, it is characterized in that, described computing unit is a monitoring node, send the signaling message that comprises the parameter regulation data by described monitoring node to adjusting start node, described monitoring node and each node of adjusting between the start node are received the parameter regulation data.

16. maintaining method as claimed in claim 14 is characterized in that, described computing unit is the centralized calculation unit that receives the monitoring node reported data.

17. maintaining method as claimed in claim 16 is characterized in that, described centralized calculation unit is a webmaster.

18. maintaining method as claimed in claim 16, it is characterized in that described monitoring node and adjust each node between the start node and receive that the parameter regulation data are described parameter regulation data to be distributed to described monitoring node and to adjust each node between the start node by described centralized calculation unit.

19. maintaining method as claimed in claim 14 is characterized in that, described monitoring node announcement adjustment start node begins to carry out parameter adjustment and is specially:

Described monitoring node directly sends advertised information to adjusting start node; Perhaps

Described monitoring node sends announcement and gives the user, sends advertised information by the user to adjusting start node.

20. maintaining method as claimed in claim 14 is characterized in that, described method further comprises:

After described computing unit calculates the parameter regulation data, according to the user parameter regulation data that described computing unit is calculated are set and revise.

21. a node device is characterized in that, comprising:

22. a kind of node device as claimed in claim 21 is characterized in that, described processing module further comprises:

Computing module is used for calculating the parameter regulation data according to the signaling message after upgrading, and the signaling message that will comprise described parameter regulation data is sent to sending module.

23. a node device is characterized in that, described node device comprises receiver module, sending module, judge module, processing module, reaches routing selecting module, wherein,

Receiver module is used to receive message, is sent to described judge module;

24. the system of a maintaining wavelength path is characterized in that, this system comprises: monitoring node and adjustment start node, wherein,

25. maintenance system as claimed in claim 24 is characterized in that, described monitoring node and described adjustment start node can carry out corresponding physical signalling impairment parameter according to the parameter regulation data of receiving to be regulated.

26. maintenance system as claimed in claim 24 is characterized in that, described system further comprises intermediate node,

Intermediate node is used to receive the signaling message that a node sends, and physical signalling impairment parameter and the described signaling message of adjustable physical signalling damage range parameter update by self are sent to next node.