CN101841740A - Method and device for sending and receiving high-speed Ethernet data streams in optical transport network - Google Patents
Method and device for sending and receiving high-speed Ethernet data streams in optical transport network Download PDFInfo
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Abstract
The embodiment of the invention discloses a method and a device for sending and receiving high-speed Ethernet data streams in an optical transport network, relates to the field of communication, and solves the problem of extreme high complexity of processing the high-speed Ethernet data streams in the prior art. The technical scheme provided by the embodiment of the invention comprises the steps of: acquiring parallel signals in the high-speed Ethernet data streams; mapping the parallel signals to a time slot which corresponds to an optical channel payload unit according to the corresponding relation between each path of the parallel signals in the high-speed Ethernet data streams and the time slot in the optical channel payload unit; and encapsulating the optical channel payload unit into an optical channel transmission unit and sending the optical channel transmission unit out. The embodiment of the invention can be applied to transporting data streams.
Description
Technical field
The present invention relates to the communications field, relate in particular in optical transfer network the method and apparatus that sends, receives the Fast Ethernet data flow.
Background technology
Optical transfer network (OTN, Optical Transport Network) as the core technology that transmits net of future generation, can have abundant managerial ability, powerful Tandem Connection Monitor ability and outstanding forward error correction (FEC, Forward Error Correction) ability, can dispatch flexibly and manage big capacity business, become the mainstream technology of backbone transport networks day by day.
In OTN, will be mapped to the optical channel Payload Unit from the client signal of other networks, and be called digital wrapper technology by the technology that transmits among the OTN.When client signal be the Fast Ethernet data flow (for example, hundred gigabit Ethernets (100GE) or 40 gigabit Ethernets (40GE)) time, the process of transmitting ethernet data stream in the prior art in OTN is as follows: the source end is converted to the Fast Ethernet data flow that receives the multi-path parallel signal of high speed adaptation unit interface, and multi-path parallel signal in the described Fast Ethernet data flow carried out relative time delay compensation and rearrangement, be integrated into the Fast Ethernet data flow that the user sends, Fast Ethernet data flow after will integrating again is mapped to the payload section of optical channel Payload Unit, encapsulating the optical channel Payload Unit that has carried the Fast Ethernet data flow then is optical channel transmission unit, sends optical channel transmission unit to Su Duan.Su Duan is sent to the user with the multi-path parallel signal in the Fast Ethernet data flow in the described optical channel Payload Unit.With hundred gigabit Ethernet data flow is example, the process of transmitting hundred gigabit Ethernet data flow in the prior art in OTN is as follows: the source termination is received CAUI (100GigabitAttachment UnitInterface, 100 gigabit adaptation unit interfaces) data (10 road signal), to described 10 road signals, at each road it is carried out the bit distribution, become 20 road Virtual Channel (VL afterwards, Virtual Lane) signal, described 20 road Virtual Channel signals are carried out compensation in relative time delay and rearrangement, be integrated into the Fast Ethernet data flow that the user sends, Fast Ethernet data flow after will integrating again is mapped to the payload section of optical channel Payload Unit, the optical channel Payload Unit that hundred gigabit Ethernet data flow have been carried in encapsulation is an optical channel transmission unit, sends optical channel transmission unit to Su Duan.Su Duan separates mapping with hundred gigabit Ethernet data flow in the described optical channel Payload Unit and comes out, and changes into standard compliant hundred gigabit adaptation unit interface data (10 road signal) and be sent to the user.
State in realization in the process of transmission ethernet data stream, the inventor finds that there are the following problems at least in the prior art: need carry out compensation in relative time delay and rearrangement to the parallel data signal of high speed adaptation unit interface and handle.For example, after carrying out the bit distribution, 10 road signals to hundred gigabit adaptation unit interface data are converted into 20 road Virtual Channel signals, need carry out compensation in relative time delay and rearrangement processing to 20 road Virtual Channel signals, this has just increased the complexity that realizes greatly, has improved development cost.And this processing need transmit the form of net identification client signal, can't satisfy in some cases the requirement to optical transfer network bit transparent transmission client signal.
Summary of the invention
The method and apparatus that sends, receives the Fast Ethernet data flow in optical transfer network that embodiments of the invention provide can reduce the processing complexity of source end, reduces development cost, can satisfy the requirement of bit transparent transmission client signal simultaneously.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, the method and apparatus that in optical transfer network, sends the Fast Ethernet data flow that provides of the embodiment of the invention.
A kind of method that sends the Fast Ethernet data flow in optical transfer network comprises:
Obtain the Fast Ethernet data flow;
According to the corresponding relation of time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, described parallel signal is mapped in the optical channel Payload Unit time slot corresponding;
Described optical channel Payload Unit is encapsulated as optical channel transmission unit to send.
A kind of device that sends the Fast Ethernet data flow in optical transfer network comprises:
Acquisition module is used for obtaining Fast Ethernet data flow parallel signal;
Mapping block is used for the corresponding relation according to time slot in described Fast Ethernet data flow every road parallel signal and the optical channel Payload Unit, and described parallel signal is mapped in the optical channel Payload Unit time slot corresponding;
Sending module is used for that described optical channel Payload Unit is encapsulated as optical channel transmission unit and sends.
On the other hand, the method, the device that in optical transfer network receive Fast Ethernet data flow corresponding with said method that the embodiment of the invention provides comprise:
A kind of method that receives the Fast Ethernet data flow in optical transfer network comprises:
The optical channel transmission unit of Fast Ethernet data flow is carried in reception;
Described optical channel transmission unit decapsulation is obtained the optical channel Payload Unit;
According to the corresponding relation of time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, from described optical channel Payload Unit time slot corresponding, separate mapping Fast Ethernet data flow.
A kind of device that receives the Fast Ethernet data flow in optical transfer network comprises:
Receiver module is used to receive the optical channel transmission unit that carries the Fast Ethernet data flow;
Decapsulation module is used for described optical channel transmission unit decapsulation is obtained the optical channel Payload Unit;
Separate mapping block, be used for corresponding relation, from described optical channel Payload Unit time slot corresponding, separate mapping Fast Ethernet data flow according to time slot in described Fast Ethernet data flow every road parallel signal and the optical channel Payload Unit.
The method and apparatus that in optical transfer network, sends, receives the Fast Ethernet data flow that the embodiment of the invention provides, with the every road signal map in the Fast Ethernet data flow in optical channel Payload Unit time slot corresponding, avoided resetting every road Signal Processing, reduced the processing complexity, reduce development cost, can satisfy the requirement of bit transparent transmission client signal simultaneously.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of flow chart that in optical transfer network, sends the method for Fast Ethernet data flow that Fig. 1 provides for the embodiment of the invention;
The another kind that Fig. 2 provides for the embodiment of the invention receives the flow chart of the method for Fast Ethernet data flow in optical transfer network;
The application scenarios that Fig. 3 provides for the embodiment of the invention;
The flow chart of the method that in optical transfer network, transmits the Fast Ethernet data flow that Fig. 4 provides for the embodiment of the invention one;
Fig. 5 is the schematic diagram of the corresponding relation of data-signal and optical channel Payload Unit in the hundred gigabit data flow in the embodiment of the invention;
Fig. 6 is the schematic diagram of the corresponding relation of Virtual Channel signal and optical channel Payload Unit in the hundred gigabit data flow in the embodiment of the invention;
Fig. 7 is the schematic diagram of the corresponding relation of queue signals and optical channel Payload Unit in the hundred gigabit data flow in the embodiment of the invention;
Fig. 8 is the schematic diagram of the corresponding relation of data-signal and optical channel Payload Unit in the 40 gigabit data flow in the embodiment of the invention;
Fig. 9 is another schematic diagram of the corresponding relation of data-signal and optical channel Payload Unit in the 40 gigabit data flow in the inventive embodiments;
The structural representation that in optical transfer network, sends the device of Fast Ethernet data flow that Figure 10 provides for the embodiment of the invention four;
Another structural representation that in optical transfer network, sends the device of Fast Ethernet data flow that Figure 11 provides for the embodiment of the invention four;
The structural representation of mapping block in the device that in optical transfer network, sends the Fast Ethernet data flow that Figure 12 provides for the embodiment of the invention four;
Another structural representation of mapping block in the device that in optical transfer network, sends the Fast Ethernet data flow that Figure 13 provides for the embodiment of the invention four;
Figure 14 provide for the embodiment of the invention five another in optical transfer network, receive the structural representation of the device of Fast Ethernet data flow;
Figure 15 is for separating the structural representation of mapping block among Figure 14;
Figure 16 is for separating another structural representation of mapping block among Figure 14.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Below in conjunction with specific embodiments and the drawings the present invention is further explained.
As shown in Figure 1, the embodiment of the invention provides a kind of method that sends the Fast Ethernet data flow in optical transfer network, comprising:
S101, obtain parallel signal in the Fast Ethernet data flow;
S102, according to the corresponding relation of time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, described parallel signal is mapped in the optical channel Payload Unit time slot corresponding;
S103, described optical channel Payload Unit is encapsulated as optical channel transmission unit sends.
As shown in Figure 2, the embodiment of the invention provides a kind of method that receives the Fast Ethernet data flow in optical transfer network, comprising:
The optical channel transmission unit of Fast Ethernet data flow is carried in S201, reception;
S202, described optical channel transmission unit decapsulation is obtained the optical channel Payload Unit;
S203, according to the corresponding relation of time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, from described optical channel Payload Unit time slot corresponding, separate mapping Fast Ethernet data flow.
The method and apparatus that in optical transfer network, sends, receives the Fast Ethernet data flow that the embodiment of the invention provides, (100GE is CAUI with high speed adaptation unit interface, 40GE is XLAUI) multi-path parallel signal be mapped in the optical channel Payload Unit time slot corresponding, avoided every road signal is carried out compensation of delay and resets processing, reduced implementation complexity, reduce development cost, can satisfy the requirement of bit transparent transmission client signal simultaneously.
For making those skilled in the art be expressly understood the technical scheme that the embodiment of the invention provides more, the transmission method of the ethernet data stream that the embodiment of the invention is provided describes in detail below:
As shown in Figure 3, the B of operator is equipped with two Fast Ethernet B1, B2 respectively in two places.The B of operator rents the interior transmission link of Optical Transmission Network OTN of the A of operator, makes Fast Ethernet B1, B2 to establish a communications link by the forwarding of Optical Transmission Network OTN.For example, the user of user in Fast Ethernet B2 in the Fast Ethernet B1 to send the process of Fast Ethernet data flow as follows: the user in the Fast Ethernet B1 is sent to optical transfer network with Fast Ethernet data flow to be sent.The source end of optical transfer network is converted into the Fast Ethernet data flow that receives the multidiameter delay data-signal of high speed adaptation unit interface, and the multi-path parallel signal of described high speed adaptation unit interface is mapped in the pairing time slot of optical channel Payload Unit, the optical channel Payload Unit that the Fast Ethernet data flow has been carried in encapsulation is an optical channel transmission unit, sends optical channel transmission unit to Su Duan.Su Duan separates mapping with the Fast Ethernet data flow in the described optical channel Payload Unit and comes out, and is converted into the multidiameter delay data-signal of high speed adaptation unit interface, sends it to the user in the Ethernet B2.
Embodiment one
As shown in Figure 4, the transmission method of the Fast Ethernet data flow that the embodiment of the invention provides, detailed process is as follows:
The embodiment of the invention describes for example with the ethernet data stream (100GE, hundred gigabit Ethernets) of transmission 103.125Gbit/s.
S401, source end obtain parallel signal in the Fast Ethernet data flow;
In embodiments of the present invention, the source end receives the ethernet data stream of 103.125Gbit/s from Ethernet, and be converted into CAUI (hundred gigabit adaptation unit interfaces) data, the i.e. data-signal of 10 road 10.3125Gbit/s, for 10 road signals of CAUI data be numbered signal S1, S2 ..., S10, as shown in Figure 5.
S402, source end are set up in the described Fast Ethernet data flow corresponding relation of time slot in the every channel parallel data signal and optical channel Payload Unit;
Concrete, according to the speed of described Fast Ethernet data flow, be identified for shining upon the optical channel Payload Unit (OPUj, Optical Channel Payload Unit-j) of described Fast Ethernet data flow.After being identified for shining upon the optical channel Payload Unit of described Fast Ethernet data flow,, determine the required number of time slots of every circuit-switched data signal in the described Fast Ethernet data flow according to the speed of described definite optical channel Payload Unit.Number of time slots according to determining is every circuit-switched data signal configures time slot corresponding.
In embodiments of the present invention, the speed of described Fast Ethernet data flow is 103.125Gbit/s (hundred gigabit Ethernets, be 100GE), the optical channel Payload Unit grade that then is identified for shining upon described Fast Ethernet data flow is OPU4 (optical channel Payload Unit OPUj wherein, j=1,2,3,4 represents the speed grade of 2.5Gbit/s, 10Gbit/s, 40Gbit/s and 100Gbit/s respectively).Wherein the speed of OPU4 is about 104.356Gbit/s, have 80 time slots be numbered respectively time slot TS1, TS2 ..., TS80, the maximum bearer rate of each time slot is about 1.3Gbit/s, and the data-signal of then every road 10.3125Gbit/s need be mapped in 8 time slots.Number according to determining is 8 time slots of every circuit-switched data signal configures.We can carry out following distribution at this, the corresponding TS1～TS8 of signal S1, and the corresponding TS9～TS16 of signal S2, the rest may be inferred, the corresponding TS73～TS80 of signal S10.As shown in Figure 5.
The embodiment of the invention to be disposing the corresponding relation of adjacent 8 time slots and 1 circuit-switched data signal, but is not limited thereto, and is suitable equally for the corresponding relation of optional 8 time slots and 1 circuit-switched data signal from OPU4, repeats no more herein.
S403, source end be according to the corresponding relation of time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, with every road signal map of described Fast Ethernet data flow in time slot corresponding;
Concrete, corresponding relation according to described every road signal and optical channel Payload Unit time slot, the time slot that every road signal map is determined in the optical channel Payload Unit, and with the correspondence relationship information of described every road signal and optical channel Payload Unit time slot and shine upon the overhead area that the optical channel Payload Unit is added in control information to; Optical channel Payload Unit after the mapping is encapsulated as optical channel transmission unit to send.
In embodiments of the present invention, then be the TS1～TS8 zone that signal S1 is mapped to OPU4, signal S2 is mapped to TS9～TS16 zone of OPU4, the rest may be inferred, signal S10 is mapped to TS73～TS80 zone of OPU4.Adopt general mapping rules (Generic Mapping Procedure, GMP).Indicate correspondence relationship information to be positioned over PSI[i according to multi-frame simultaneously with every road signal and OPU4 time slot] (wherein i belongs to [0,255] for PayloadStructure Identifier, the indication of payload structure).To shine upon control information (GMPOH, general mapping rules expense) is positioned in 7 bytes of 15/16 row.As shown in Figure 5.
S404, source end are packaged into optical channel transmission unit with described optical channel Payload Unit and send;
In embodiments of the present invention, the OPU4 after mapping is finished is encapsulated as OTU4 (optical channel transmission unit 4) and sends.
S405, place termination are received and are carried the optical channel transmission unit of Fast Ethernet data flow;
In embodiments of the present invention, the method that the place termination is received the optical channel Payload Unit all is applicable to this step, repeats no more herein.
S406, Su Duan obtain the optical channel Payload Unit to described optical channel transmission unit decapsulation;
S407, Su Duan separate mapping Fast Ethernet data flow according to the corresponding relation of time slot in every road signal and the optical channel Payload Unit in the described Fast Ethernet data flow from described optical channel Payload Unit time slot corresponding.
Concrete, the overhead area of Su Duancong optical channel Payload Unit is obtained the corresponding relation of every road signal and time slot in the described Fast Ethernet data flow and is shone upon control information.According to corresponding relation that obtains and mapping control information, from the corresponding time slot of optical channel Payload Unit, separate the every road signal that maps out the Fast Ethernet data flow; The Fast Ethernet data flow of obtaining is sent.
In embodiments of the present invention, the overhead area of Su Duancong OTU4/OPU4, obtain the corresponding relation and the mapping control information of the every road signal and the time slot of CAUI interface in the 100GE data flow, and according to described corresponding relation, determine every circuit-switched data signal map is in which time slot, behind the time slot of determining every road signal map, from the time slot of determining, separate the data-signal that maps out 10.3125Gbit/s according to the mapping control information, become the CAUI interface data with separating the 10 circuit-switched data signal gatherings that map out, and send.
The method and apparatus that in optical transfer network, transmits the 100GE data flow that the embodiment of the invention provides, 10 channel parallel data signals of the CAUI interface of 100GE data flow are mapped to respectively among the OPU4 in the pairing time slot, avoided 10 channel parallel datas of CAUI interface are carried out eliminating relative time delay and resetting and handle, reduced implementation complexity, reduce development cost, satisfied the requirement of bit transparent transmission 100GE data flow simultaneously.
Implement two
In embodiments of the present invention, the speed of described Fast Ethernet data flow is 103.125Gbit/s (100GE, hundred gigabit Ethernets).For the multichannel of eliminating the 100GE data flow transmits relative time delay, 10 tunnel speed to the CAUI interface are carried out bit distribution (be about to every circuit-switched data division of signal and become odd sequence Virtual Channel signal and even sequence Virtual Channel signal) for the 10.3125Gbit/s parallel data, be converted into 20 road Virtual Channel (VL, Virtual Lane) signal, for described Virtual Channel signal is numbered VLi, VLj, VLm, VLn, i wherein, j, m, n is a Virtual Channel number, belong to [1,20], different, the speed of wherein every road Virtual Channel signal is 5.15625Gbit/s, described 20 road Virtual Channel signals are carried out eliminating relative time delay processing, the method of wherein eliminating time delay in the prior art all is applicable to this step, repeats no more herein.
Similar among the process of wherein setting up the corresponding relation of time slot in 20 road Virtual Channel signals and the optical channel Payload Unit and the embodiment one, do simple the description herein:
The optical channel Payload Unit that is identified for shining upon the ethernet data stream of 103.125Gbit/s is OPU4.Then every road Virtual Channel signal demand is mapped among the OPU4 in 4 time slots.According to the number of determining is every road Virtual Channel configuration time slot corresponding.Corresponding TS1～the TS4 of Virtual Channel VLi is set, the corresponding TS5～TS8 of VLj, the rest may be inferred, the corresponding TS73～TS76 of VLm, the corresponding TS77～TS80 of VLn.But be not limited to this kind corresponding relation.As shown in Figure 6.
Further alternative, when being eliminated, Virtual Channel delays, with synthetic 1 tunnel formation Q of at least 2 road Virtual Channel sets of signals, the rule that wherein is combined into formation can be at random, also rule of combination can be set, and the Virtual Channel that for example disposes adjacent numbering is combined into one tunnel formation, i.e. configuration is numbered the Virtual Channel of N and N+1 and forms 1 tunnel formation, N=1 wherein, 2,3 ... 19.Described 20 road Virtual Channel signals with 2 road Virtual Channel signals be unit be combined into 10 tunnel queue signals be expressed as Q1, Q2 ..., Q10.Because of the speed of every road formation equates with the speed of data-signal among the embodiment one, the specific implementation method of then setting up the corresponding relation of time slot in the formation of every road and the optical channel Payload Unit with implement in one identical.We can carry out following distribution at this, the corresponding TS1～TS8 of Q1, and the corresponding TS9～TS16 of Q2, the rest may be inferred, the corresponding TS73～TS80 of Q10.As shown in Figure 7.But be not limited to this kind corresponding relation.
In embodiments of the present invention, (Generic Mapping Procedure GMP), is mapped to the pairing time slot of OPU4 zone with Virtual Channel signal or formation to adopt general mapping rules.Indicate correspondence relationship information to be positioned over PSI[i according to multi-frame simultaneously with every road signal and OPU4 time slot] (wherein i belongs to [0,255] for Payload Structure Identifier, the indication of payload structure).To shine upon control information (GMP OH, general mapping rules expense) is positioned in 7 bytes of 15/16 row.
Further alternative, after the time delay of having eliminated between 20 road Virtual Channels, need not reset processing to 20 road Virtual Channels, can be unit with specific code block (1 byte or 8 bytes etc.) with 20 road Virtual Channels, the mode by repeating query is mapped into the OPU4 payload section.Mapping method can adopt general mapping rules (GenericMapping Procedure, GMP).To shine upon control information (GMP OH, general mapping rules expense) and be positioned over the overhead area (promptly 15/16 row) of OPU4.Concrete round-robin method is the 1st Virtual Channel that the 1st code block of serial data stream is taken from the Fast Ethernet parallel data stream, and the 2nd code block is from the 2nd Virtual Channel ..., the 20th code block is from the 20th Virtual Channel, and from the 1st Virtual Channel, the rest may be inferred again for the 21st code block.Code block is the base unit that the sigma-delta of GMP mapping calculates.The process that formation is shone upon is identical with Virtual Channel, repeats no more herein.
The method that in optical transfer network, transmits Fast Ethernet data flow 100GE that the embodiment of the invention provides, with 20 road Virtual Channel signal map of 100GE in the OPU4 time slot corresponding, avoided 20 road Virtual Channels are reset processing, reduced the processing complexity, reduced development cost.
Implement three
In embodiments of the present invention, the speed of described Fast Ethernet data flow is 41.25Gbit/s (40 lucky Ethernet).Receive described 40 lucky ethernet data streams, and be translated into XLAUI (40GigabitAttachment Unit Interface, 40 gigabit adaptation unit interfaces) data, be 4 road signals, each road signal rate is 10.3125Gbit/s.
Similar among the process of wherein setting up the corresponding relation of time slot in 4 road signals and the optical channel Payload Unit and the embodiment one, do simple the description herein:
First kind, the optical channel Payload Unit that is identified for shining upon the ethernet data stream of 41.25Gbit/s is OPU3e.OPU3e has 16 time slots, and each time slot speed is about 2.5Gbit/s.According to the number of determining is every road signal configures time slot corresponding, for example be provided with 16 time slots among the OPU3e be numbered TS1, TS2 ..., TS 16.Disposing the 1 road signal time slot corresponding is TS1～TS4, and the 2 road signal time slot corresponding is TS5～TS8, by that analogy.As shown in Figure 8.
Second kind, the optical channel Payload Unit that is identified for shining upon the ethernet data stream of 41.25Gbit/s is OPU3.OPU3 has 16 time slots, and each time slot speed is about 2.5Gbit/s.The conversion (purpose is suitable changing down) of encoding of every road signal demand of XLAUI interface, the every road signal after transforming through coding can be mapped in 4 time slots of OPU3.According to the number of determining is every road signal configures time slot corresponding.The concrete configuration process is same as described above, repeats no more herein.As shown in Figure 9.
In embodiments of the present invention, when every circuit-switched data signal map in OPU3e or OPU3 during time slot corresponding, OPU3e after then mapping being finished or OPU3 are encapsulated as OTU3e (optical channel transmission unit 3e) or OTU3 (optical channel transmission unit 3) sends;
The method that in optical transfer network, transmits the 40GE data flow that the embodiment of the invention provides, 4 channel parallel data signals of the XLAUI interface of 40GE are mapped to respectively in the corresponding time slot of OPU3e or OPU3, avoided 4 channel parallel data signals of XLAUI interface are carried out the time delay elimination and reset processing, reduce the processing complexity, reduced development cost.
Embodiment four
As shown in figure 10, a kind of device that sends the Fast Ethernet data flow in optical transfer network that the embodiment of the invention provides comprises:
Sending module 1003 is used for that described optical channel Payload Unit is encapsulated as optical channel transmission unit and sends.
Optionally, as shown in figure 11, the described device that sends the Fast Ethernet data flow in optical transfer network can further include:
Further alternative, the described device that sends the Fast Ethernet data flow in optical transfer network can further include:
First sets up module, be used for speed according to described Fast Ethernet data flow, be identified for shining upon the optical channel Payload Unit of described Fast Ethernet data flow, and according to the maximum bearer rate of time slot in the described definite optical channel Payload Unit, determine to transmit parallel signal required number of time slots in every road in the described Fast Ethernet data flow, determine the number of time slots that submodule is determined according to described number, be every road parallel signal configuration time slot corresponding.
Optionally, as shown in figure 12, described mapping block 1002 may further include:
First determines submodule 10021, is used for determining that described every road parallel signal is in optical channel Payload Unit time slot corresponding;
First mapping submodule 10022, be used for determining the described every channel parallel data signal of submodule and the corresponding relation of optical channel Payload Unit time slot according to described first, every road parallel signal is mapped in the optical channel Payload Unit time slot of determining, and with the corresponding relation of time slot in described every channel parallel data signal and the optical channel Payload Unit and shine upon the overhead area that the optical channel Payload Unit is added in control information to.
Optionally, delay when described cancellation module is eliminated described Fast Ethernet data flow, the described device that sends the Fast Ethernet data flow in optical transfer network also comprises:
Second sets up module, is used for the speed according to described Fast Ethernet data flow, is identified for shining upon the optical channel Payload Unit of described Fast Ethernet data flow; And the mapping length and the mapping order of correspondence when disposing every road parallel signal and being mapped to described optical channel Payload Unit.
Further, as shown in figure 13, described mapping block 1002 may further include:
Second determines submodule 10023,, be used for determining the mapping length and the mapping order of correspondence when every road parallel signal is mapped to described optical channel Payload Unit.
The device that in optical transfer network, sends the Fast Ethernet data flow that the embodiment of the invention provides, with the every road signal map in the Fast Ethernet data flow in optical channel Payload Unit time slot corresponding, avoided resetting every road Signal Processing, reduced the processing complexity, reduce development cost, can satisfy the requirement of bit transparent transmission client signal simultaneously.
Embodiment five
As shown in figure 14, a kind of device that receives the Fast Ethernet data flow in optical transfer network that the embodiment of the invention provides comprises:
Optionally, as shown in figure 15, the described mapping block 1403 of separating may further include:
First obtains submodule 14031, is used for from the overhead area of described optical channel Payload Unit, obtains the corresponding relation of every road parallel signal and time slot in the described Fast Ethernet data flow;
First separates mapping submodule 14032, is used for obtaining the corresponding relation that submodule obtains according to described first, separates every road parallel signal of mapping Fast Ethernet data flow from the corresponding time slot of optical channel Payload Unit.
Optionally, as shown in figure 16, the described mapping block of separating comprises:
Second obtains submodule 14033, is used for from the overhead area of described optical channel Payload Unit, the mapping length and the mapping order of correspondence when obtaining every road parallel signal and being mapped to described optical channel Payload Unit;
Second separates mapping submodule 14034, is used for obtaining the mapping order that submodule obtains according to second, extracts length is formed described Fast Ethernet data flow for the code block of mapping length every road parallel signal from the optical channel Payload Unit.
The device that in optical transfer network, sends the Fast Ethernet data flow that the embodiment of the invention provides, with the every road signal map in the Fast Ethernet data flow in optical channel Payload Unit time slot corresponding, avoided resetting every road Signal Processing, reduced the processing complexity, reduce development cost, can satisfy the requirement of bit transparent transmission client signal simultaneously.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (18)
1. a method that sends the Fast Ethernet data flow in optical transfer network is characterized in that, comprising:
Obtain parallel signal in the Fast Ethernet data flow;
According to the corresponding relation of time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, described parallel signal is mapped in the optical channel Payload Unit time slot corresponding;
Described optical channel Payload Unit is encapsulated as optical channel transmission unit to send.
2. the method that sends the Fast Ethernet data flow in optical transfer network according to claim 1 is characterized in that, describedly obtains parallel signal in the Fast Ethernet data flow, also comprises:
Eliminate the time delay of parallel signal in the described Fast Ethernet data flow.
3. the method that sends the Fast Ethernet data flow in optical transfer network according to claim 1 and 2 is characterized in that described obtaining after the Fast Ethernet data flow also comprises:
According to the speed of described Fast Ethernet data flow, be identified for shining upon the optical channel Payload Unit of described Fast Ethernet data flow;
According to the maximum bearer rate of time slot and the speed of every road parallel signal in the described definite optical channel Payload Unit, determine to transmit the required number of time slots of every road parallel signal;
According to the number of time slots of determining, be every road parallel signal configuration time slot corresponding.
4. according to the arbitrary described method that in optical transfer network, sends the Fast Ethernet data flow of claim 1 to 3, it is characterized in that, described corresponding relation according to time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, described parallel signal is mapped in the optical channel Payload Unit time slot corresponding, comprises:
Determine that described every road parallel signal is in optical channel Payload Unit time slot corresponding;
Corresponding relation according to time slot in described every channel parallel data signal and the optical channel Payload Unit, every road parallel signal is mapped in the optical channel Payload Unit time slot of determining, and with the corresponding relation of time slot in described every channel parallel data signal and the optical channel Payload Unit and shine upon the overhead area that the optical channel Payload Unit is added in control information to.
5. the method that sends the Fast Ethernet data flow in optical transfer network according to claim 2 is characterized in that, described obtaining in the Fast Ethernet data flow after the parallel signal comprises:
According to the speed of described Fast Ethernet data flow, be identified for shining upon the optical channel Payload Unit of described Fast Ethernet data flow;
The mapping length and the mapping order of correspondence when disposing every road parallel signal and being mapped to described optical channel Payload Unit.
6. the method that in optical transfer network, sends the Fast Ethernet data flow according to claim 5, it is characterized in that, described corresponding relation according to time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, described parallel signal is mapped in the optical channel Payload Unit time slot corresponding, comprises:
Determine the mapping length and the mapping order of correspondence when every road parallel signal is mapped to described optical channel Payload Unit;
According to definite mapping order, from the parallel signal of every road, extract the code block of length for mapping length, be mapped to the payload section of optical channel Payload Unit, and will shine upon the overhead area that the optical channel Payload Unit is added in control information to.
7. a method that receives the Fast Ethernet data flow in optical transfer network is characterized in that, comprising:
The optical channel transmission unit of Fast Ethernet data flow is carried in reception;
Described optical channel transmission unit decapsulation is obtained the optical channel Payload Unit;
According to the corresponding relation of time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, from described optical channel Payload Unit time slot corresponding, separate mapping Fast Ethernet data flow.
8. the method that in optical transfer network, receives the Fast Ethernet data flow according to claim 7, it is characterized in that, described corresponding relation according to time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, from described optical channel Payload Unit time slot corresponding, separate mapping Fast Ethernet data flow, comprising:
From the overhead area of described optical channel Payload Unit, obtain the corresponding relation of every road parallel signal and time slot in the described Fast Ethernet data flow;
According to the corresponding relation of described every road parallel signal and time slot, from the corresponding time slot of optical channel Payload Unit, separate every road parallel signal of mapping Fast Ethernet data flow.
9. the method that in optical transfer network, receives the Fast Ethernet data flow according to claim 7, it is characterized in that, described corresponding relation according to time slot in every road parallel signal and the optical channel Payload Unit in the described Fast Ethernet data flow, from described optical channel Payload Unit time slot corresponding, separate mapping Fast Ethernet data flow, comprising:
Determine the mapping length and the mapping order of correspondence when every road parallel signal is mapped to described optical channel Payload Unit;
According to the mapping order of determining, from the optical channel Payload Unit, extract length is formed described Fast Ethernet data flow for the code block of mapping length every road parallel signal.
10. a device that sends the Fast Ethernet data flow in optical transfer network is characterized in that, comprising:
Acquisition module is used for obtaining Fast Ethernet data flow parallel signal;
Mapping block is used for the corresponding relation according to time slot in described Fast Ethernet data flow every road parallel signal and the optical channel Payload Unit, and described parallel signal is mapped in the optical channel Payload Unit time slot corresponding;
Sending module is used for that described optical channel Payload Unit is encapsulated as optical channel transmission unit and sends.
11. the device that sends the Fast Ethernet data flow in optical transfer network according to claim 10 is characterized in that, also comprises:
Cancellation module is used for eliminating the time delay of the Fast Ethernet data flow parallel signal that described acquisition module obtains.
12. according to claim 10 or the 11 described devices that in optical transfer network, transmit the Fast Ethernet data flow, it is characterized in that, also comprise:
First sets up module, be used for speed according to described Fast Ethernet data flow, be identified for shining upon the optical channel Payload Unit of described Fast Ethernet data flow, and according to the maximum bearer rate of time slot in the described definite optical channel Payload Unit, determine to transmit parallel signal required number of time slots in every road in the described Fast Ethernet data flow, determine the number of time slots that submodule is determined according to described number, be every road parallel signal configuration time slot corresponding.
13. the device that sends the Fast Ethernet data flow in optical transfer network according to claim 12 is characterized in that described mapping block comprises:
First determines submodule, is used for determining that described every road parallel signal is in optical channel Payload Unit time slot corresponding;
First mapping submodule, be used for determining the described every channel parallel data signal of submodule and the corresponding relation of optical channel Payload Unit time slot according to described first time slot, every road parallel signal is mapped in the optical channel Payload Unit time slot of determining, and with the corresponding relation of time slot in described every channel parallel data signal and the optical channel Payload Unit and shine upon the overhead area that the optical channel Payload Unit is added in control information to.
14. the device that sends the Fast Ethernet data flow in optical transfer network according to claim 11 is characterized in that, also comprises:
Second sets up module, be used for speed according to described Fast Ethernet data flow, be identified for shining upon the optical channel Payload Unit of described Fast Ethernet data flow, and the mapping length and the mapping order of correspondence when disposing every road parallel signal and being mapped to described optical channel Payload Unit.
15. the device that sends the Fast Ethernet data flow in optical transfer network according to claim 14 is characterized in that described mapping block comprises:
Second determines submodule, is used for determining the mapping length and the mapping order of correspondence when every road parallel signal is mapped to described optical channel Payload Unit.
Second mapping submodule, be used for determining the mapping order that submodule is determined according to described second time slot, from the parallel signal of every road, extract the code block of length, be mapped to the payload section of session Payload Unit, and will shine upon the overhead area that the optical channel Payload Unit is added in control information to for mapping length.
16. a device that receives the Fast Ethernet data flow in optical transfer network is characterized in that, comprising:
Receiver module is used to receive the optical channel transmission unit that carries the Fast Ethernet data flow;
Decapsulation module is used for described optical channel transmission unit decapsulation is obtained the optical channel Payload Unit;
Separate mapping block, be used for corresponding relation, from described optical channel Payload Unit time slot corresponding, separate mapping Fast Ethernet data flow according to time slot in described Fast Ethernet data flow every road parallel signal and the optical channel Payload Unit.
17. the device that transmits the Fast Ethernet data flow in optical transfer network according to claim 16 is characterized in that the described mapping block of separating comprises:
First obtains submodule, is used for from the overhead area of described optical channel Payload Unit, obtains the corresponding relation of every road parallel signal and time slot in the described Fast Ethernet data flow;
First separates mapping submodule, is used for obtaining the corresponding relation that submodule obtains according to described first, separates every road parallel signal of mapping Fast Ethernet data flow from the corresponding time slot of optical channel Payload Unit.
18. the device that receives the Fast Ethernet data flow in optical transfer network according to claim 16 is characterized in that the described mapping block of separating comprises:
Second obtains submodule, is used for from the overhead area of described optical channel Payload Unit, the mapping length and the mapping order of correspondence when obtaining every road parallel signal and being mapped to described optical channel Payload Unit;
Second separates mapping submodule, is used for obtaining the mapping order that submodule obtains according to second, extracts length is formed described Fast Ethernet data flow for the code block of mapping length every road parallel signal from the optical channel Payload Unit.
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