CN106341352A

CN106341352A - Method and device for transmitting inter-domain interface data in optical transport network

Info

Publication number: CN106341352A
Application number: CN201510415488.9A
Authority: CN
Inventors: 苏伟; 马腾·维塞斯
Original assignee: Huawei Technologies Co Ltd
Current assignee: Hangzhou Weiyuan Network Technology Co.,Ltd.
Priority date: 2015-07-15
Filing date: 2015-07-15
Publication date: 2017-01-18
Anticipated expiration: 2035-07-15
Also published as: WO2017008634A1; CN106341352B

Abstract

An embodiment of the invention provides a method and a device for transmitting inter-domain interface data in an optical transport network. The method comprises the steps of: determining a rate of an inter-domain interface signal data frame according to traffic of service to be transmitted; encapsulating the service to be transmitted into the inter-domain interface signal data frame; and transmitting the encapsulated inter-domain interface signal data frame. The method and the device for transmitting inter-domain interface data in the optical transport network can unify a client interface format and simplify processing in transmission equipment or routing equipment, thereby reducing implementation cost of the entire network, and realizing end-to-end bandwidth linkage adjustment of the routing equipment and the transmission equipment.

Description

Method and apparatus for the domain interface data transmission of optical transfer network

Technical field

The present invention relates to the communications field, and indirect more particularly, to a kind of domain for optical transfer network The method and apparatus of mouth data transmission.

Background technology

Current optical transfer network (optical transport network, otn) as one of main flow tranmission techniques, Possess multiple service supporting transfer capability, for example sdh business, ether business, cpri business, fc business, HD video business etc., can carry out carrying transmission by optical transfer network.Especially, ether business is made One of the major customer's business carrying for current otn, with the birth of 400ge, drive otn to Higher rate evolution, current industry is actively studying and defining super 100g otn technology, is also exactly Meet following big bandwidth transmission demand.

With the rising of otn speed, the class of business of carrying and quantity also increase continuous, this also with Bring some problems.Before reason is to carry by otn, need to access by client traffic interface Otn equipment, and carry out corresponding adaptation processing, mapping afterwards is encapsulated into different otn support containers Transmitted.Client traffic quantity therefore to be lifted is so many, similarly needs the visitor of equal number Family business interface is accessed to customer equipment interconnection and is carried out the operation such as corresponding adaptation processing.Customer type, The variation of speed etc. complicates otn transmission equipment, improves whole net transmission cost.With routing device With otn transmission equipment interconnection as a example describe, currently mainly interconnected by ether customer interface, exist fe, Multiple speed grade customer interface such as ge, 25ge, 10ge, 40ge, 100ge, 400ge.otn Transmission equipment transmits these ether client traffic to carry, and needs the ether client's industry by different rates Business interface is accessed and is carried out the operation such as different adaptation processing, and this substantially increases to a certain extent Whole net transmission cost.

Therefore with the growth of client traffic type to be lifted and quantity, otn transmission equipment customer side is adopted Use which type of customer interface, unified diversified customer interface processing mode, reduce whole net transmission cost, It is problem demanding prompt solution.

Content of the invention

The embodiment of the present invention provides a kind of method of the domain interface data transmission for optical transfer network and dress Put, customer interface form can be unified, simplify transmission equipment or routing device is processed, reduce whole net and realize Cost, realizes routing device and the linkage adjustment of transmission equipment end-to-end bandwidth.

A kind of first aspect, there is provided method of the domain interface data transmission for optical transfer network, described Method includes:

According to the flow of business to be transmitted, determine the speed of domain interface signal data frame；

Encapsulate described business to be transmitted to described domain interface signal data frame；

Send the described domain interface signal data frame after encapsulation.

In conjunction with a first aspect, in the first possible implementation of first aspect, described encapsulation is described Business to be transmitted is to described domain interface signal data frame, comprising:

According to the flow of each business in described business to be transmitted, determine the corresponding sub- container of each business, Wherein, described sub- container is the time interval resource of the described domain interface signal data frame that business to be transmitted takies；

By each business packed described in each self-corresponding sub- container；

The corresponding sub- container of each business described in after encapsulating, is multiplexed into described domain interface signal data Frame.

In conjunction with the first possible implementation of first aspect, in the possible reality of the second of first aspect In existing mode, described domain interface signal data frame includes n logic branch road, described n logic branch road In each logic branch road include at least one time slot, the corresponding sub- container of described each business is by least one Individual logic branch road composition.

In conjunction with the possible implementation of the second of first aspect, in the third possible reality of first aspect In existing mode, described by each business packed described in each self-corresponding sub- container, comprising:

Directly each business described mapping is encapsulated in each self-corresponding sub- container, described sub- container is by treating The logic branch road composition of the described domain interface signal data frame shared by business of transmission, wherein, in envelope When dress each business described is to each self-corresponding logic branch road, carry group character, wherein, correspondence is same The logic branch road of business, carries identical group character.

In conjunction with the third possible implementation of first aspect, in the 4th kind of possible reality of first aspect In existing mode, described will the corresponding sub- container of each business described in after encapsulation, be multiplexed into described variable-ratio Rate domain interface signal data frame, comprising:

Corresponding for each business described sub- container is multiplexed into opu frame；

According to described opu frame, generate otu frame, wherein, described otu frame includes described opu frame And the Overhead of described otu frame.

In conjunction with the first possible implementation of first aspect, in the 5th kind of possible reality of first aspect In existing mode, described by each business packed described in each self-corresponding sub- container, comprising:

Each business described is mapped as variable light data unit oduflex frame；

Each business packed described in oduflex frame will be encapsulated as in each self-corresponding sub- container；

Described will encapsulation after described in the corresponding sub- container of each business, be multiplexed between described variable bit rate domain Interface signal Frame, comprising:

In conjunction with any one possible implementation in first to the 5th kind of first aspect, in first aspect In 6th kind of possible implementation, the described flow according to business to be transmitted, determine domain interface signal The speed of Frame, comprising:

Obtain n by rounding on the ratio with single logic branch road speed for the service traffics to be transmitted；

The product of described n and described single logic branch road speed is defined as described domain interface signal data The speed of frame.

In conjunction with any one possible implementation in first to the 6th kind of first aspect or first aspect, In 7th kind of possible implementation of first aspect, the described flow according to business to be transmitted, determine domain The speed of interface signal data frame, comprising:

According to the flow of described business to be transmitted, determine initially speed to be transmitted；

Send instruction message to target side, in described instruction message, carry described speed initially to be transmitted；

Receive the response message that described target side sends, described response message is used for confirming described initially to be passed Defeated speed is the speed of described domain interface signal data frame；

Described speed initially to be transmitted is defined as the speed of described domain interface signal data frame.

In conjunction with any one possible implementation in second to the 4th kind of first aspect, in first aspect In 8th kind of possible implementation, described domain interface signal data frame has a following frame format:

Described in n road, logic branch road is interleave successively by m byte and forms, and wherein m is positive integer；

The form of described logic branch road is:

Totally 4 row 4080 arrange, wherein, the 1～7 of the 1st row be classified as frame head instruction expense, the 8～14 of the 1st row It is classified as the overhead area of otu, the 15～16 of the 1st～4 row is classified as the overhead area of opu, the 1st～4 row 17～3824 are classified as opu payload section, and the 3825～4080 of the 1st～4 row is classified as the fec check field of otu；

Or

4 row 3824 arrange, wherein, the 1～7 of the 1st row be classified as frame head instruction expense, the 8～14 of the 1st row It is classified as the overhead area of otu, the 15～16 of the 1st～4 row is classified as the overhead area of opu, the 1st～4 row 17～3824 are classified as opu payload section.

A kind of second aspect, there is provided method of the domain interface data transmission for optical transfer network, comprising:

Receive domain interface signal data frame, wherein, the speed of described domain interface signal data frame is to send out Sending end determines according to the flow of transmission services；

Demultiplex described domain interface signal data frame, to obtain the corresponding sub- container of each business；

The corresponding sub- container of each business described in demapping, to obtain the business information of each business described.

In conjunction with second aspect, in the first possible implementation of second aspect, described domain interface Signal data frame includes n logic branch road, each the logic branch road in described n logic branch road include to A few time slot, the corresponding sub- container of described each business is made up of at least one logic branch road.

In conjunction with the first possible implementation of second aspect, in the possible reality of the second of second aspect In existing mode, each logic branch road carries group character；The logic branch road of corresponding same business, carries phase Same group character；

Described demultiplexing described domain interface signal data frame, to obtain the corresponding sub- container of each business, Including:

To there is the logic branch road of same packets mark, be determined to belong to the sub- container of same business.

In conjunction with the possible implementation of the second of second aspect, in the third possible reality of second aspect In existing mode, described reception domain interface signal data frame, comprising:

Receive otu frame；

Decapsulate described otu frame, obtain opu frame；

According to the Overhead in described opu frame and according to the sub- container being determined by described group character Dividing condition, demultiplexes described opu frame, obtains the corresponding sub- container of each business.

In conjunction with second aspect, in the 4th kind of possible implementation of second aspect, between described reception domain Interface signal Frame, comprising:

Receive otu frame；

Decapsulate described otu frame, obtain opu frame；

According to the Overhead in described opu frame, demultiplex described opu frame, obtain each business pair The sub- container answered；

The corresponding sub- container of each business described in described demapping, to obtain the business letter of each business described Breath, comprising:

The corresponding sub- container of each business described in demapping, obtains the described corresponding oduflex of each business.

In conjunction with second aspect the 3rd or four kind of possible implementation, in the 5th kind of possibility of second aspect Implementation in, described domain interface signal data frame has a following frame format:

Described in n road, logic branch road frame is interleave successively by m byte and forms, and wherein m is positive integer；

The form of described logic branch road frame is:

Or

In conjunction with second aspect or second aspect the first in the third any one implementation, second In 6th kind of possible implementation of aspect, before the interface signal data frame of described reception domain, described Method also includes:

Receive instruction message, in described instruction message, carry described speed initially to be transmitted；

Send response message to transmitting terminal, described response message is used for confirming that described speed initially to be transmitted is The speed of described domain interface signal data frame.

A kind of third aspect, there is provided device of the domain interface data transmission for optical transfer network, described Device includes:

Determining unit, for the flow according to business to be transmitted, determines the speed of domain interface signal data frame Rate；

Encapsulation unit, for encapsulating described business to be transmitted to described domain interface signal data frame；

Transmitting element, for sending the described domain interface signal data frame after encapsulation.

In conjunction with the third aspect, in the first possible implementation of the third aspect, described encapsulation unit Including:

Determination subelement, for the flow according to each business in described business to be transmitted, determines each The corresponding sub- container of business, wherein, described sub- container is the indirect message in described domain that business to be transmitted takies The time interval resource of number frame；

Encapsulation subelement, for by each business packed described in each self-corresponding sub- container；

Multiplexing subelement, for will after encapsulation described in the corresponding sub- container of each business, be multiplexed into described Domain interface signal data frame.

In conjunction with the first possible implementation of the third aspect, in the possible reality of the second of the third aspect In existing mode, described domain interface signal data frame includes n logic branch road, described n logic branch road In each logic branch road include at least one time slot, the corresponding sub- container of described each business is by least one Individual logic branch road composition.

In conjunction with the possible implementation of the second of the third aspect, in the third possible reality of the third aspect In existing mode, described encapsulation subelement specifically for:

In conjunction with the third possible implementation of the third aspect, in the 4th kind of possible reality of the third aspect In existing mode, described multiplexing subelement specifically for:

In conjunction with the first possible implementation of the third aspect, in the 5th kind of possible reality of the third aspect In existing mode, described encapsulation subelement specifically for:

Each business described is mapped as variable light data unit oduflex frame；

Described multiplexing subelement specifically for:

In conjunction with any one possible implementation in first to the 5th kind of the third aspect, in the third aspect In 6th kind of possible implementation, described determining unit specifically for:

In conjunction with any one possible implementation in first to the 6th kind of the third aspect or the third aspect, In 7th kind of possible implementation of the third aspect, described determining unit specifically for:

In conjunction with any one possible implementation in second to the 4th kind of the third aspect, in the third aspect In 8th kind of possible implementation, described domain interface signal data frame has a following frame format:

The form of described logic branch road is:

Or

Fourth aspect. a kind of device of the domain interface data transmission for optical transfer network it is characterised in that Including:

Receiving unit, for receiving domain interface signal data frame, wherein, described domain interface signal number Speed according to frame is that transmitting terminal determines according to the flow of transmission services；

Demultiplexing unit, for demultiplexing described domain interface signal data frame, to obtain each business pair The sub- container answered；

De-mapping unit, for the corresponding sub- container of each business described in demapping, with obtain described each The business information of business.

In conjunction with fourth aspect, in the first possible implementation of fourth aspect, described domain interface Signal data frame includes n logic branch road, each the logic branch road in described n logic branch road include to A few time slot, the corresponding sub- container of described each business is made up of at least one logic branch road.

In conjunction with the first possible implementation of fourth aspect, in the possible reality of the second of fourth aspect In existing mode, each logic branch road carries group character；The logic branch road of corresponding same business, carries phase Same group character；

Described demultiplexing unit specifically for:

In conjunction with the possible implementation of the second of fourth aspect, in the third possible reality of fourth aspect In existing mode, described receiving unit specifically for:

Receive otu frame；

Described demultiplexing unit specifically for:

Decapsulate described otu frame, obtain opu frame；

In conjunction with fourth aspect, in the 4th kind of possible implementation of fourth aspect, described receiving unit Specifically for:

Receive otu frame；

Described demultiplexing unit specifically for:

Decapsulate described otu frame, obtain opu frame；

Described de-mapping unit specifically for:

In conjunction with fourth aspect the 3rd or four kind of possible implementation, in the 5th kind of possibility of fourth aspect Implementation in, described domain interface signal data frame has a following frame format:

The form of described logic branch road frame is:

Or

In conjunction with fourth aspect or fourth aspect the first in the third any one implementation, the 4th In 6th kind of possible implementation of aspect, described receiving unit is additionally operable to: receives instruction message, institute State in instruction message and carry described speed initially to be transmitted；

Described device also includes transmitting element, for sending response message, described response message to transmitting terminal For confirming the speed that described speed initially to be transmitted is described domain interface signal data frame.

Therefore, in embodiments of the present invention, the flow according to this business to be transmitted, determines the indirect message in domain The speed of number frame, the therefore speed of domain interface signal data frame, can be according to business to be transmitted The change of flow and change, such that it is able to meet the motility demand for interconnection such as multi tate；Domain interface signal The variable bit rate performance that Frame possesses, it is possible to achieve the function of multiple customer interfaces, unified client connects Degree of lip-rounding state, simplifies transmission equipment or routing device is processed, and reduces whole net cost of implementation；And, due to domain The rate-compatible of interface signal data frame, the bandwidth of two networks is realized UNICOM's adjustment, by adjustment Domain interface rate bandwidth, realizes routing device and the linkage adjustment of transmission equipment end-to-end bandwidth.

Brief description

In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to embodiment or existing skill Art description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description It is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying creation Property work on the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of domain interface data transmission for optical transfer network according to an embodiment of the present invention The indicative flowchart of method.

Fig. 2 is the schematic figure of the domain interface signal data frame according to present invention another kind embodiment.

Fig. 3 be according to the present invention another kind embodiment group character in the position of domain interface signal data frame Put schematic figure.

Fig. 4 is the confirmation of the speed of the domain interface signal data frame according to present invention another kind embodiment Figure.

Fig. 5 is the schematic figure of the domain interface signal data frame according to present invention another kind embodiment.

Fig. 6 is to be passed according to a kind of domain interface data for optical transfer network of present invention another kind embodiment The indicative flowchart of delivery method.

Fig. 7 is to be passed according to a kind of domain interface data for optical transfer network of present invention another kind embodiment The indicative flowchart of delivery method.

Fig. 8 is to be passed according to a kind of domain interface data for optical transfer network of present invention another kind embodiment The schematic piping drawing of delivery method.

Fig. 9 is to be passed according to a kind of domain interface data for optical transfer network of present invention another kind embodiment The indicative flowchart of delivery method.

Figure 10 is a kind of domain interface data for optical transfer network according to present invention another kind embodiment The schematic piping drawing of transfer approach.

Figure 11 is a kind of domain interface data for optical transfer network according to present invention another kind embodiment The indicative flowchart of transporter.

Figure 12 is a kind of domain interface data for optical transfer network according to present invention another kind embodiment The indicative flowchart of transfer approach.

Figure 13 is a kind of domain interface data for optical transfer network according to present invention another kind embodiment The indicative flowchart of transporter.

Figure 14 is a kind of domain interface data for optical transfer network according to present invention another kind embodiment The indicative flowchart of transporter.

Figure 15 is a kind of domain interface data for optical transfer network according to present invention another kind embodiment The indicative flowchart of transporter.

Figure 16 is a kind of domain interface data for optical transfer network according to present invention another kind embodiment The indicative flowchart of transporter.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out Clearly and completely description is it is clear that described embodiment a part of embodiment that is the present invention, rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound The every other embodiment being obtained under the premise of the property made work, broadly falls into the scope of protection of the invention.

Fig. 1 is a kind of domain interface data transferring method for optical transfer network according to inventive embodiments 100 indicative flowchart.As shown in figure 1, the method 100 includes:

110, according to the flow of business to be transmitted, determine the speed of domain interface signal data frame；

120, encapsulate described business to be transmitted to described domain interface signal data frame；

130, send the described domain interface signal data frame after encapsulation.

Therefore, in embodiments of the present invention, the flow according to business to be transmitted, determines domain interface signal The speed of Frame, the therefore speed of domain interface signal data frame, can be according to the stream of business to be transmitted Amount change and change, such that it is able to meet the motility demand for interconnection such as multi tate；Domain interface signal number The variable bit rate performance possessing according to frame, it is possible to achieve the function of multiple customer interfaces, unified customer interface Form, simplifies transmission equipment or routing device is processed, and reduces whole net cost of implementation；And, due between domain The rate-compatible of interface signal Frame, the bandwidth of two networks is realized UNICOM's adjustment, by regulatory domain Interface rate bandwidth, realizes routing device and the linkage adjustment of transmission equipment end-to-end bandwidth.

In embodiments of the present invention, domain interface refers to support to interconnect between different management domains Interface, be positioned between different operators network or same carrier network internal difference management domains between Interconnection.

Alternatively, in embodiments of the present invention, business to be transmitted can include sdh business, ether business, Cpri business, fc business, HD video business etc..

Alternatively, in embodiments of the present invention, the method 100 be can apply to routing device and set with transmission Information transfer between standby；For example, routing device is transmitting terminal, and transmission equipment is receiving terminal；Transmission sets Standby for transmitting terminal, routing device is receiving terminal；One transmission equipment is transmitting terminal, and another transmission equipment is to connect Receiving end；One routing device is transmitting terminal, and another routing device is receiving terminal.

Alternatively, in embodiments of the present invention, in 140, encapsulate this business to be transmitted to this domain interface Signal data frame, comprising:

According to the flow of each business in this business to be transmitted, determine the corresponding sub- container of each business；

By this each business packed in each self-corresponding sub- container；

By the corresponding sub- container of this each business after encapsulation, it is multiplexed into this domain interface signal data frame.

That is, transmitting terminal can determine what each business each accounted for according to the flow of each business Time interval resource, namely determine the sub- container corresponding to each business, then, transmitting terminal can be by each industry Business is encapsulated into each self-corresponding sub- container, then corresponding for each business sub- container is multiplexed into this domain indirect Message number frame.Wherein, time interval resource shared by each business for the corresponding sub- container of each business Composition.

Alternatively, in embodiments of the present invention, by this each business packed in each self-corresponding sub- container, Including:

This each business is mapped as variable light data list oduflex frame；

By way of oduflex frame is mapped to odtu, by be encapsulated as oduflex frame this is every Individual business packed is in each self-corresponding sub- container；

By the corresponding sub- container of this each business after encapsulation, it is multiplexed into this domain interface signal data frame, Including:

The corresponding odtu of this each business is multiplexed into opu frame；

According to this opu frame, generate otu frame, wherein, this otu frame includes this opu frame and is somebody's turn to do The Overhead of otu frame.

Alternatively, when each business is mapped as oduflex frame, gmp (generic can be adopted Mapping procedure, general mapping code), gfp (generic frame procedure, general one-tenth Frame code) or bmp (bit synchronous mapping procedure, bit synchronous map code) The mode of mapping.

Alternatively, in embodiments of the present invention, this domain interface signal data frame includes n logic branch road, Each logic branch road in this n logic branch road includes at least one time slot, this corresponding son of each business Container is made up of at least one logic branch road.

Alternatively, in embodiments of the present invention, the corresponding sub- container of each business includes at least one logic Branch road, the corresponding sub- container of different business includes different logic branch roads.

In embodiments of the present invention, by this each business packed in each self-corresponding sub- container, comprising:

Alternatively, in the case that logic branch road carries group character, each business described can be corresponded to Sub- container be multiplexed into opu frame；According to described opu frame, generate otu frame, wherein, described otu Frame includes described opu frame and the Overhead of described otu frame.Alternatively, otu overhead area carries Otu section monitors expense；Odu overhead area carries odu path cost；Opu overhead area carries payload class Type, payload structure instruction and map information expense etc..

Alternatively, described domain interface signal data frame frame has a following frame format:

Described in n road, logic branch road is interleave successively by m byte and forms, and wherein m is positive integer.

The form of described logic branch road is:

Or

Alternatively, 1～14 in 2～4 row is classified as odu overhead area.

For example, as shown in Fig. 2 otu frame is divided into 20n time slot, in payload section 16n+1～3816n Row are in turn divided into 20n time slot by row interval, and numbering is ts a.b (wherein a=1 ... n, b=1 ... 20； Such as 1.1,2.1 ..., n.1,1.2,2.2 ..., until n.20).Press m in payload section 16n+1～3816n row Individual byte interval is in turn divided into 20n time slot, and equally numbering is ts a.b.Wherein, m is more than or equal to 1 that is to say, that can be according to 1 each time slot of byte interval it is also possible to according to m byte interval Each time slot.

Wherein, shown in Fig. 2 for filling row situation, that is, 3816n+1～3824n be classified as filling row, Band filling row situation wherein can also be selected.

Alternatively, each time slot is 1.25g time slot.The speed to be transmitted of otu frame then as shown in Figure 2 For 25g.

Alternatively, in embodiments of the present invention, by service traffics to be transmitted and single logic tributary capacity Round on ratio and obtain n；The product of described n and described single logic tributary capacity is defined as described domain Interface speed to be transmitted.

Specifically, transmitting terminal can count the size of service traffics to be transmitted, and wherein, transmitting terminal is permissible By the size of flow statistical module real-time statistics service traffics to be transmitted it is also possible to pass through exterior arrangement, The size of service traffics to be transmitted is for example determined by network management configuration；And by the flow of business to be transmitted with Round on the ratio of logic branch road and obtain n, the product of this n and single logic branch road is defined as between this domain The speed of interface signal Frame.

Alternatively, in embodiments of the present invention, the flow according to described business to be transmitted, determines and initially treats Transfer rate；Send instruction message to described target side, carry described initially to be passed in described instruction message Defeated speed；Receive the response message that described target side sends, described response message is used for confirming described initial Speed to be transmitted is the speed of domain interface signal data frame；Described speed to be transmitted undetermined is defined as institute State the speed of domain interface signal data frame.

For example, as shown in figure 3, the 1st row 12n+1 and 13n+1 row of otu frame can be selected to open Pins position puts (totally two bytes, the otu expense position of corresponding respective logic branch road) as this rate consulation Specific overhead passage.Wherein bit 15 indicates rate_req for rate request, high effectively；Bit 14 is speed Rate response indicates rate_ack, high effectively；Bit 13～0 is used for placing n value.

Alternatively, negotiations process specifically can be as shown in figure 4, be: transmitting terminal indicates in multi-frame During mfas=0～2, continuous 3 frame rate request indicate rate_req=1 and carry the time of desired n Choosing value n_value；After receiving terminal receives the rate request instruction rate_req=1 of continuous 3 frames, extract The n value of the speed as domain interface signal data frame for the n candidate value that n_value carries, so that it is determined that should The speed of domain interface signal data frame；, when multi-frame instruction mfas=0～2, transmission is even for transmitting terminal afterwards After continuing 3 frame rate responses instruction rate_ack=1 and carrying renewal, n value n_value is to opposite end；Send termination After receiving the speed response instruction rate_req=1 of continuous 3 frames, determine the n of domain interface signal data frame Value, so that it is determined that the speed of domain interface signal data frame.

It should be understood that in embodiments of the present invention, how transmitting terminal and receiving terminal consult domain indirect port transmission speed Rate also has other implementation, and for example, the flow of business to be transmitted is sent to receiving terminal by transmitting terminal, by Receiving terminal determines the speed of domain interface signal data frame according to the flow of business to be transmitted；Again for example, may be used To carry out to receiving terminal and transmitting terminal unifying configuring by NMS, for example, receiving terminal can be by The flow of business to be transmitted reports to NMS, by NMS according to this business to be transmitted Flow, determine the speed of domain interface signal data frame, and be respectively sent to receiving terminal and transmitting terminal.

Alternatively, in embodiments of the present invention, prop up to each self-corresponding logic in encapsulation each business described Lu Shi, carries group character, wherein, the logic branch road of corresponding same business, carry identical packet mark Know.

For example, the 4th row 14n+1 of domain interface signal data frame (include n logic branch road) is extremely The group character gi (group identifier) that 15 row carry respective logic branch road distinguishes n road logic branch road The different sub- container of correspondence, its gi value of different sub- containers is different, belongs to the logic branch road of same sub- container Carry identical value.

For example, it is assumed that 3 road client traffic pass through domain interface signal data frame opuxxvn transmitting, root According to 3 road customer traffic sizes, this domain interface signal data frame is divided into 3 sub- containers Opuxxvn1, opuxxvn2 and opuxxvn3, wherein opuxxvn1 are used for carrying the 1st Road client traffic, is made up of the 1st, 2 tunnel logic branch roads；Opuxxvn2 is used for carrying the 2nd tunnel client Business, is made up of the 3rd tunnel logic branch road；Opuxxvn3 is used for carrying the 3rd road client traffic, by the 4 arrive n road logic branch road composition.Concrete carrying mode may be referred to Fig. 5, in the figure, otu frame 4th row 14+1 to 15 row carry the gi container different to distinguish n road logic branch road correspondence, wherein, #i (i value is from 1 to n) is used for indicating the logic branch road belonging to corresponding byte.Wherein, so that The definition of the presentation of information of in figure, illustrate only the partial information of otu frame in Fig. 5, for example, also The information such as overhead area can be included.

Fig. 6 is a kind of side of domain interface data transmission for optical transfer network according to embodiments of the present invention The indicative flowchart of method 200.As illustrated, the method 200 includes:

210, receive domain interface signal data frame, wherein, the transmission of described domain interface signal data frame Speed is that the flow according to transmission services determines；

220, demultiplex described domain interface signal data frame, to obtain the corresponding sub- container of each business；

230, the corresponding sub- container of each business described in demapping, to obtain the business letter of each business described Breath.

Therefore, in embodiments of the present invention, the speed of domain interface signal data frame is to be transmitted according to this The flow of business, determines, the therefore speed of domain interface signal data frame, can be according to business to be transmitted The change of flow and change, such that it is able to meet the motility demand for interconnection such as multi tate；The indirect message in domain The variable bit rate performance that number frame possesses, it is possible to achieve the function of multiple customer interfaces, unified client Interface form, simplifies transmission equipment or routing device is processed, and reduces whole net cost of implementation；And, due to The rate-compatible of domain interface signal data frame, the bandwidth of two networks is realized UNICOM's adjustment, by adjusting Integral domain interface rate bandwidth, realizes routing device and the linkage adjustment of transmission equipment end-to-end bandwidth.

Alternatively, in embodiments of the present invention, described domain interface signal data frame includes n logic and props up Road, each the logic branch road in described n logic branch road includes at least one time slot, each business described Corresponding sub- container is made up of at least one logic branch road.Different sub- containers includes different logic branch roads.

Alternatively, each logic branch road carries group character, the logic branch road of corresponding same business, carries Identical group character；

Alternatively, in 220, demultiplex described domain interface signal data frame, to obtain each business pair The sub- container answered, comprising:

Alternatively, in the case that logic branch road carries group character, in 210, described reception domain is indirect Message number frame, comprising: receive otu frame；

In 220, described demultiplexing described domain interface signal data frame, corresponding to obtain each business Sub- container, comprising: decapsulate described otu frame, obtain opu frame；According to opening in described opu frame Pin information and described group character, demultiplex described opu frame, obtain the corresponding sub- container of each business. Alternatively, in 210, receive domain interface signal data frame, comprising:

Receive otu frame；

In 220, demultiplex described domain interface signal data frame, to obtain the corresponding sub- appearance of each business Device, comprising:

Decapsulate described otu frame, obtain opu frame；

In 230, the corresponding sub- container of each business described in demapping, to obtain the industry of each business described Business information, comprising:

The corresponding sub- container of each business described in demapping obtains the described corresponding oduflex of each business.

Alternatively, the method 200 also includes:

Corresponding for each business described oduflex is carried out gating mapping and is multiplexed at least one tunnel Otucn/ho otu transmits.

Alternatively,

The form of described logic branch road is:

Or

Alternatively, 1～14 in 2～4 row is classified as odu overhead area.

Below describe to be used for the domain of optical transfer network according to embodiments of the present invention from transmitting terminal and receiving terminal respectively The method of interface data transmission, according to embodiments of the present invention by being described in the way of both sides' interaction below Domain interface data transferring method for optical transfer network.

Fig. 7 is a kind of domain interface data transferring method for optical transfer network according to embodiments of the present invention 300 indicative flowchart.It is assumed that business to be transmitted includes ether business in the method 300, with And ip/mpls business, as illustrated, the method 300 includes:

In 301a and 301b, transmitting terminal obtains ether business and ip/mpls business respectively, according to ether Business and the flow of ip/mpls business, determine domain interface signal data frame (i.e. otuxxvn frame) Speed；

In 302a and 302b, business is mapped as oduflex frame by transmitting terminal；

In 303a and 303b, corresponding for each business oduflex is respectively mapped to odtu by transmitting terminal In；

In 304, the odtu of all business is multiplexed with opuxxvn by transmitting terminal；

In 305, transmitting terminal generates otuxxvn according to opuxxvn, and this otuxxvn is sent out Deliver to receiving terminal.

In 306, receiving terminal receives otuxxvn, decapsulates this otuxxvn, obtains opuxxvn.

In 307, receiving terminal demultiplexes this opuxxvn, obtains the corresponding odtu of each business；

In 308a and 308b, the corresponding odtu of each business of receiving terminal demapping, obtain oduflex.

In 309, carry out odu intersection, then can be multiplexed into other high-orders odu transmission as needed Passage.Can be different according to direction of transfer, it is respectively mapped to ho otuk or otucn at least one tunnel Middle transmission, wherein, ho otuk is the Optical Channel Transport Unit-k of fixed rate, k=1,2,3,4, represent respectively 2.5g、10g、40g、100g；Otucn is the Optical Channel Transport Unit-k of n times of 100g speed, cn Represent n*100g..

Due in transmitting terminal directly by business packed in oduflex frame, it is to avoid transmission equipment secondary Service adaptation is processed.

The diagram that the method 300 for Fig. 7 shown in Fig. 8 is illustrated using variable duct mode, so that More preferably more directly understand the present invention, wherein, simple and clear in order to take into account, not the everything in Fig. 7 is equal Figure 8 illustrates.

Fig. 9 is a kind of domain interface data transferring method for optical transfer network according to embodiments of the present invention 400 indicative flowchart.It is assumed that business to be transmitted includes ether business in the method 400, with And ip/mpls business, as illustrated, the method 400 includes:

In 401a and 401b, transmitting terminal obtains ether business and ip/mpls business respectively, according to ether Business and the flow of ip/mpls business, determine domain interface signal data frame (i.e. otuxxvn frame) Speed；

In 402a and 402b, each business is mapped to each self-corresponding opuxxvni by transmitting terminal, that is, Ether business is mapped to opuxxvn1, and ip/mpls business is mapped to opuxxvn2, wherein, often Individual opuxxvn can include at least one logic branch road, each self-corresponding being mapped to each business During the logic branch road of opuxxvn, group character can be carried, this group character indicates that each logic is propped up Packet belonging to road, i.e. corresponding business, wherein, what the corresponding opuxxvni of each business included patrols The quantity collecting branch road can be according to the volume flow of this business.

In 403, corresponding for each business opuxxvi is multiplexed in otuxxvn transmitting terminal.

It is specially and corresponding for each business opuxxvni is multiplexed with opuxxvn, and add corresponding Mapping cost information, adds otuxxvn MSOH information, and encapsulation forms otuxxvn；

And send otuxxvn to receiving terminal.

404, decapsulation receiving terminal decapsulates this otuxxvn, obtains opuxxvn.

In 405a and 405b, demapping goes out the corresponding opuxxvni of each business, is specifically as follows and carries Take the MSOH of otuxxvn, and decapsulate otuxxvn and obtain each opuxxvni, carry Take the packet instruction gi of the n road logic branch road opuxxv of opuxxvn, know that its sub- container divides Situation, according to the dividing condition of opuxxvn, the corresponding opuxxvni of demultiplexed each business.

In 406a and 406b, corresponding for each business opuxxvni is mapped as oduflex by receiving terminal.

It is specifically as follows and extracts multiple opuxxvni corresponding mapping cost information respectively, from multichannel Opuxxvni demapping goes out multichannel client traffic；Mapping multichannel client traffic is to oduflex, root respectively Transmit according to client traffic and require, using gmp, gfp, bmp etc. different mapping modes may be selected；Example As formed the business such as multichannel oduflex (gmp), oduflex (gfp), oduflex (bmp).

In 407, carry out odu intersection, then can be different according to direction of transfer, it is respectively mapped at least Transmit in ho otuk or otucn on one tunnel.

The diagram that the method 400 for Fig. 9 shown in Figure 10 is illustrated using variable duct mode, so that More preferably more directly understand the present invention, wherein, simple and clear in order to take into account, not the everything in Fig. 9 is equal Figure 10 illustrates.

It should be understood that each frame xxvn below is intended merely to each logic corresponding and props up in Fig. 7 to Figure 10 The speed on road and the quantity of the logic branch road being comprised, for example, xxvn represents each logic branch road Speed is 25g, total n logic branch road；Extend to other situations in the same manner, for example, ln, represent The speed of each logic branch road is 50g, total n logic branch road.

It will also be understood that although above-mentioned describe root from the mode of transmitting terminal, receiving terminal and both sides interaction respectively According to the embodiment of the present invention for optical transfer network domain interface data transferring method, but various mode In description content mutually applicable.

Figure 11 is a kind of domain interface data transmission for optical transfer network according to embodiments of the present invention The schematic block diagram of device 500, described device 500 includes:

Determining unit 510, for the flow according to business to be transmitted, determines domain interface signal data frame Speed；

Encapsulation unit 520, for encapsulating described business to be transmitted to described domain interface signal data frame；

Transmitting element 530, for sending the described domain interface signal data frame after encapsulation.

Alternatively, as shown in figure 12, described encapsulation unit 520 includes:

Determination subelement 521, for the flow according to each business in described business to be transmitted, determines The corresponding sub- container of each business, wherein, described sub- container is that the described domain that business to be transmitted takies is indirect The time interval resource of message number frame；

Encapsulation subelement 522, for by each business packed described in each self-corresponding sub- container；

Multiplexing subelement 523, for will encapsulation after described in the corresponding sub- container of each business, be multiplexed into Described domain interface signal data frame.

Alternatively, described domain interface signal data frame includes n logic branch road, and described n logic is propped up Each logic branch road in road includes at least one time slot, and the corresponding sub- container of described each business is by least One logic branch road composition.

Alternatively, described encapsulation subelement 522 specifically for:

Alternatively, when the corresponding sub- container of each business described is made up of at least one logic branch road, institute State multiplexing subelement 523 specifically for:

Alternatively, described encapsulation subelement 522 specifically for:

Each business described is mapped as variable light data unit oduflex frame；

Described multiplexing subelement specifically for:

Alternatively, described determining unit 510 specifically for:

Alternatively, described domain interface signal data frame has a following frame format:

The form of described logic branch road is:

Or

This device 500 can correspond to the corresponding operating in implementation method 100, can be used as method 100 Executive agent, for sake of simplicity, will not be described here.

Figure 13 is the dress that a kind of domain interface data for optical transfer network transmits according to embodiments of the present invention Put 600 schematic block diagram, comprising:

Receiving unit 610, for receiving domain interface signal data frame, wherein, the indirect message in described domain The speed of number frame is that transmitting terminal determines according to the flow of transmission services；

Demultiplexing unit 620, for demultiplexing described domain interface signal data frame, to obtain each industry It is engaged in corresponding sub- container；

De-mapping unit 630, for the corresponding sub- container of each business described in demapping, described to obtain The business information of each business.

Alternatively, each logic branch road carries group character；The logic branch road of corresponding same business, carries Identical group character；

Described demultiplexing unit 620 specifically for:

Alternatively, described receiving unit 610 specifically for:

Receive otu frame；

Described demultiplexing unit 620 specifically for:

Decapsulate described otu frame, obtain opu frame；

Alternatively, described receiving unit 610 specifically for:

Receive otu frame；

Described demultiplexing unit 620 specifically for:

Decapsulate described otu frame, obtain opu frame；

Described de-mapping unit 630 specifically for:

The form of described logic branch road frame is:

Or

Alternatively, described receiving unit 610 is additionally operable to: receives instruction message, takes in described instruction message Carry described speed initially to be transmitted；

As shown in figure 14, described device 600 also includes transmitting element 640, rings for sending to transmitting terminal Answer message, described response message is used for confirming that described speed initially to be transmitted is described domain interface signal number Speed according to frame.

This device 600 can correspond to the corresponding operating in implementation method 200, can be used as method 200 Executive agent, for sake of simplicity, will not be described here.

Figure 15 is a kind of domain interface data transmission for optical transfer network according to embodiments of the present invention The schematic block diagram of device 700.This device 700 includes processor 710 and transceiver 720, wherein,

Processor 710, for the flow according to business to be transmitted, determines domain interface signal data frame Speed；And encapsulate described business to be transmitted to described domain interface signal data frame；

Transceiver 720, for sending the described domain interface signal data frame after encapsulation.

Alternatively, processor 710 specifically for:

By each business packed described in each self-corresponding sub- container；

Alternatively, processor 710 specifically for:

Alternatively, when the corresponding sub- container of each business described is made up of at least one logic branch road, place Reason device 710 specifically for:

Alternatively, processor 710 specifically for:

Each business described is mapped as variable light data unit oduflex frame；

Alternatively, processor 710 specifically for:

Alternatively, processor 710 specifically for: according to the flow of described business to be transmitted, determine initial Speed to be transmitted；

Transceiver 720 is additionally operable to: sends instruction message to target side, carries described in described instruction message Initially speed to be transmitted；Receive the response message that described target side sends, described response message is used for confirming Described speed initially to be transmitted is the speed of described domain interface signal data frame；

Processor 710 specifically for: described speed initially to be transmitted is defined as described domain interface signal The speed of Frame.

The form of described logic branch road is:

Or

It should be understood that device 700 can also include bus and memorizer etc., for sake of simplicity, here is no longer superfluous State.

This device 700 can correspond to the corresponding operating in implementation method 100, can be used as method 100 Executive agent, for sake of simplicity, will not be described here.

Figure 16 is a kind of domain interface data transmission for optical transfer network according to embodiments of the present invention The schematic block diagram of device 800, including processor 810 and transceiver 820.Wherein,

Transceiver 820 is used for: receives domain interface signal data frame, wherein, described domain interface signal The speed of Frame is that transmitting terminal determines according to the flow of transmission services；

Processor 810 is used for: demultiplexes described domain interface signal data frame, to obtain each business pair The sub- container answered；And

Processor 810 specifically for:

Alternatively, transceiver 820 specifically for: receive otu frame；

Processor 810 is used for:

Decapsulate described otu frame, obtain opu frame；

Alternatively, transceiver 820 is used for: receives otu frame；

Processor 810 is used for: decapsulates described otu frame, obtains opu frame；

According to the Overhead in described opu frame, demultiplex described opu frame, obtain each business pair The sub- container answered；And

The form of described logic branch road frame is:

Or

Alternatively, transceiver 820 is used for:

It should be understood that device 800 can also include bus and memorizer etc., for sake of simplicity, here is no longer superfluous State.

This device 800 can correspond to the corresponding operating in implementation method 200, can be used as method 200 Executive agent, for sake of simplicity, will not be described here.

Those of ordinary skill in the art are it is to be appreciated that combine each of the embodiments described herein description The unit of example and algorithm steps, can be with the knot of electronic hardware or computer software and electronic hardware Close and to realize.These functions to be executed with hardware or software mode actually, depending on the spy of technical scheme Fixed application and design constraint.Professional and technical personnel can use not Tongfang to each specific application Method is realizing described function, but this realizes it is not considered that beyond the scope of this invention.

Those skilled in the art can be understood that, for convenience and simplicity of description, above-mentioned retouches The specific work process of system, device and the unit stated, may be referred to the correspondence in preceding method embodiment Process, will not be described here.

In several embodiments provided herein it should be understood that disclosed system, device and Method, can realize by another way.For example, device embodiment described above is only shown Meaning property, for example, the division of this unit, only a kind of division of logic function is actual permissible when realizing Have other dividing mode, for example multiple units or assembly can in conjunction with or be desirably integrated into another and be Unite, or some features can be ignored, or do not execute.Another, shown or discussed each other Coupling or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of device or unit or Communication connection, can be electrical, mechanical or other forms.

The unit that this illustrates as separating component can be or may not be physically separate, as The part that unit shows can be or may not be physical location, you can with positioned at a place, or Person can also be distributed on multiple NEs.Can select according to the actual needs part therein or All units are realizing the purpose of this embodiment scheme.

In addition, can be integrated in a processing unit in each functional unit in each embodiment of the present invention, Can also be that unit is individually physically present it is also possible to two or more units are integrated in a list In unit.

If this function is realized and as independent production marketing or use using in the form of SFU software functional unit When, can be stored in a computer read/write memory medium.Based on such understanding, the present invention's The part that technical scheme substantially contributes to prior art in other words or the part of this technical scheme can To be embodied in the form of software product, this computer software product is stored in a storage medium, Including some instructions with so that computer equipment (can be personal computer, server, or Network equipment etc.) execution each embodiment the method for the present invention all or part of step.And aforesaid deposit Storage media includes: u disk, portable hard drive, read only memory (rom, read-only memory), Random access memory (ram, random access memory), magnetic disc or CD etc. are various can Medium with store program codes.

It is somebody's turn to do above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited to This, any those familiar with the art the invention discloses technical scope in, can think easily To change or replacement, all should be included within the scope of the present invention.Therefore, the protection model of the present invention Enclose and be defined by scope of the claims.

Claims

1. a kind of method of the domain interface data transmission for optical transfer network is it is characterised in that include:

Send the described domain interface signal data frame after encapsulation.

2. method according to claim 1 is it is characterised in that the described business to be transmitted of described encapsulation To described domain interface signal data frame, comprising:

By each business packed described in each self-corresponding sub- container；

3. method according to claim 2 is it is characterised in that described domain interface signal data frame Including n logic branch road, each the logic branch road in described n logic branch road includes at least one time slot, The corresponding sub- container of described each business is made up of at least one logic branch road.

4. method according to claim 3 it is characterised in that described by each business packed described To in each self-corresponding sub- container, comprising:

5. method according to claim 4 it is characterised in that described will encapsulation after described in each The corresponding sub- container of business, is multiplexed into described variable bit rate domain interface signal data frame, comprising:

6. method according to claim 2 it is characterised in that described by each business packed described To in each self-corresponding sub- container, comprising:

Each business described is mapped as variable light data unit oduflex frame；

7. the method according to any one of claim 2 to 6 is it is characterised in that described basis is treated The flow of transmission services, determines the speed of domain interface signal data frame, comprising:

8. method according to any one of claim 1 to 7 is it is characterised in that described basis is treated The flow of transmission services, determines the speed of domain interface signal data frame, comprising:

9. the method according to any one of claim 3 to 5 is it is characterised in that described domain is indirect Message number frame has a following frame format:

The form of described logic branch road is:

Or

10. a kind of method of the domain interface data transmission for optical transfer network is it is characterised in that include:

11. methods according to claim 10 are it is characterised in that described domain interface signal data Frame includes n logic branch road, when each the logic branch road in described n logic branch road includes at least one Gap, the corresponding sub- container of described each business is made up of at least one logic branch road.

12. methods according to claim 11 are it is characterised in that each logic branch road carries packet Mark；The logic branch road of corresponding same business, carries identical group character；

13. methods according to claim 12 are it is characterised in that described reception domain interface signal Frame, comprising:

Receive otu frame；

Decapsulate described otu frame, obtain opu frame；

14. methods according to claim 10 are it is characterised in that described reception domain interface signal Frame, comprising:

Receive otu frame；

Decapsulate described otu frame, obtain opu frame；

15. methods according to right 13 or 14 are it is characterised in that described domain interface signal number According to frame there is following frame format:

The form of described logic branch road frame is:

Or

16. methods according to any one of claim 10 to 13 are it is characterised in that described connect Before receiving domain interface signal data frame, methods described also includes:

A kind of 17. devices of the domain interface data transmission for optical transfer network are it is characterised in that described Device includes:

18. devices according to claim 17 are it is characterised in that described encapsulation unit includes:

19. devices according to claim 18 are it is characterised in that described domain interface signal data Frame includes n logic branch road, when each the logic branch road in described n logic branch road includes at least one Gap, the corresponding sub- container of described each business is made up of at least one logic branch road.

20. devices according to claim 19 are it is characterised in that described encapsulation subelement is specifically used In:

21. devices according to claim 20 are it is characterised in that described multiplexing subelement is specifically used In:

22. devices according to claim 18 are it is characterised in that described encapsulation subelement is specifically used In:

Each business described is mapped as variable light data unit oduflex frame；

Described multiplexing subelement specifically for:

23. devices according to any one of claim 18 to 22 it is characterised in that described really Order unit specifically for:

24. devices according to any one of claim 17 to 23 it is characterised in that described really Order unit specifically for:

25. devices according to any one of claim 19 to 21 are it is characterised in that described domain Interface signal data frame has a following frame format:

The form of described logic branch road is:

Or

A kind of 26. devices of the domain interface data transmission for optical transfer network are it is characterised in that include:

27. devices according to claim 26 are it is characterised in that described domain interface signal data Frame includes n logic branch road, when each the logic branch road in described n logic branch road includes at least one Gap, the corresponding sub- container of described each business is made up of at least one logic branch road.

28. devices according to claim 27 are it is characterised in that each logic branch road carries packet Mark；The logic branch road of corresponding same business, carries identical group character；

Described demultiplexing unit specifically for:

29. devices according to claim 28 it is characterised in that described receiving unit specifically for:

Receive otu frame；

Described demultiplexing unit specifically for:

Decapsulate described otu frame, obtain opu frame；

30. devices according to claim 26 it is characterised in that described receiving unit specifically for:

Receive otu frame；

Described demultiplexing unit specifically for:

Decapsulate described otu frame, obtain opu frame；

Described de-mapping unit specifically for:

31. devices according to right 13 or 14 are it is characterised in that described domain interface signal number According to frame there is following frame format:

The form of described logic branch road frame is:

Or

32. devices according to any one of claim 26 to 31 are it is characterised in that described connect Receive unit to be additionally operable to: receive instruction message, in described instruction message, carry described speed initially to be transmitted；