CN109600188A

CN109600188A - Data transmission method, transmission device and Transmission system

Info

Publication number: CN109600188A
Application number: CN201710919348.4A
Authority: CN
Inventors: 向俊凌; 丁炽武
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2019-04-09
Anticipated expiration: 2037-09-30
Also published as: CN109600188B; WO2019062227A1

Abstract

This application provides a kind of data transmission method, transmission device and Transmission systems.The data transmission method includes: to obtain at least one 64B/66B stream of codeblocks, and the rate of each 64B/66B stream of codeblocks is the positive integer times of 5G；At least one 64B/66B stream of codeblocks is mapped to the corresponding time slot of at least one flexible optical transfer network FlexO frame；FlexO expense is added at least one FlexO frame, forms FlexO stream of codeblocks；Transmit FlexO stream of codeblocks.Data transmission method, transmission device and Transmission system provided by the present application, are capable of forming succinct transmission system, provide flexible based Carrying Scheme.

Description

Data transmission method, transmission device and Transmission system

Technical field

This application involves transmission net fields, and more particularly, to data transmission technology.

Background technique

Light networking forum (Optical Internet Forum, OIF) is realized in the flexible Ethernet that in April, 2016 is issued It is recommended that proposing flexible Ethernet (Flexible in (Flex Ethernet Implementation Agreement) Ethernet, FlexE) interface concept.FlexE is specifically by several ethernet physical layers (Physical Layer, PHY) chain Road is created as a flexible Ethernet group (Flex Ethernet Group, FlexE Group), to support to be directed to Ethernet industry The functions such as the binding of business, sub- rate, channelizing.

Meanwhile being provided with the rapidly growth and the diversification of type of service of service traffics, traditional transmission network Fixed rate interface, is no longer satisfied demand for interconnection, and industry is more likely to flexible rate interface.International Telecommunication Union as a result, Telecommunication standard branch office (Telecommunication Standardization Sector for ITU, ITU-T) proposes spirit The concept of optical transfer network (Flexible Optical Transport Network, FlexO) interface living.

The application scenarios of FlexE and FlexO gradually increase, and importance gradually increases, and carry FlexE signal using FlexO Or it is also increasing using the demand of FlexE and FlexO cooperative transmission.According to Current protocol, FlexE signal is to FlexO's Mapping path is too long.After transmission device receives FlexE signal, need flexible Ethernet thin layer (FlexE Shim) or FlexE client (Client) business is mapped to light data unit flex (Optical Data Unit-flex, ODUflex), after And light data unit Cn (ODUCn) is re-mapped, finally transferred out again by FlexO.The processing delay of the mapping process and Complexity is all very big.

Summary of the invention

The application provides a kind of data transmission method, transmission device and Transmission system, is capable of forming succinct transmission system, Flexible based Carrying Scheme is provided.

In a first aspect, the embodiment of the present application provides a kind of data transmission method, comprising: obtain at least one 64B/66B Stream of codeblocks, the rate of each 64B/66B stream of codeblocks are the positive integer times of 5G；It will at least one described 64B/66B stream of codeblocks It is mapped to the corresponding time slot of at least one flexible optical transfer network FlexO frame；FlexO is added at least one described FlexO frame to open It sells (Overhead, OH), forms FlexO stream of codeblocks；Transmit the FlexO stream of codeblocks.

64B/66B stream of codeblocks is mapped directly to the corresponding of at least one FlexO frame by the data transmission method of first aspect Time slot forms FlexO stream of codeblocks and is transmitted later, succinct transmission system can be formed, to provide flexible loading side Case.

It may include class FlexE number in class FlexE frame it should be understood that may include class FlexE frame in 64B/66B stream of codeblocks According to code block and class FlexE expense code block.The structure of class FlexE frame can or phase identical as the structure of FlexE frame as defined in agreement Closely.

It should also be understood that FlexO frame may include payload section and overhead area.The payload section of FlexO frame can divide time slot.

It should also be understood that FlexO frame can divide time slot according to 16 byte granularities.

In a kind of possible implementation of first aspect, the FlexO expense includes time slot allocation information, when described Gap distribution information is used to indicate the time slot that at least one described 64B/66B stream of codeblocks is mapped at least one FlexO frame Position.It, can be in FlexO expense since the data transmission method of first aspect introduces time slot in FlexO frame Time slot allocation information is carried, in order to which receiving end is parsed.

In a kind of possible implementation of first aspect, the size of the time slot of the FlexO frame is 5G.This reality The size and the FlexE frame division size of time slot of existing mode FlexO frame division time slot are identical, convenient for more efficient by FlexE industry Business is mapped to the time slot of FlexO frame.

In a kind of possible implementation of first aspect, described at least one 64B/66B stream of codeblocks of acquisition, comprising: Receive the first client traffic；64B/66B coding is carried out to first client traffic, obtains 64B/66B data code block；To described 64B/66B data code block carries out rate adaptation；It is inserted into expense code block in 64B/66B data code block after rate adaptation, is formed At least one described 64B/66B stream of codeblocks.This implementation can be used FlexO and transmit non-FlexE business, by other client's industry Business is encoded into the 64B/66B stream of codeblocks of similar FlexE stream of codeblocks, is mapped to FlexO transport layer by FlexE channel layer and is passed Defeated, the process is very efficiently simple.

It should be understood that the first client traffic can be non-FlexE business.

In a kind of possible implementation of first aspect, first client traffic includes packet business and fixed bit At least one of rate CBR business.

In a kind of possible implementation of first aspect, described at least one 64B/66B stream of codeblocks of acquisition, comprising: Receive at least the second client traffic of two-way；64B/66B coding is carried out to second client traffic of at least two-way, obtains at least two Road 64B/66B data code block；Rate adaptation is carried out at least two-way 64B/66B data code block；After rate adaptation extremely It is inserted into expense code block respectively in few two-way 64B/66B data code block, forms at least two 64B/66B code block subflows；To it is described extremely Few two 64B/66B code block subflows are multiplexed, at least one described 64B/66B stream of codeblocks is obtained.This implementation can incite somebody to action It is transmitted after the low client traffic multiplexing of rate, transfer resource can be saved, improve efficiency of transmission.

It should be understood that the second client traffic can be non-FlexE business.

In a kind of possible implementation of first aspect, described at least one 64B/66B stream of codeblocks of acquisition, comprising: FlexE business stream of codeblocks is received, the FlexE business stream of codeblocks is resolved at least one FlexE client traffic stream of codeblocks, institute Stating the code block in FlexE client traffic stream of codeblocks is 64B/66B code block；It is inserted into and opens in the FlexE client traffic stream of codeblocks Code block is sold, at least one described 64B/66B stream of codeblocks is formed.The implementation of the present embodiment can be applied to Termination The scene of mapping mode.

In a kind of possible implementation of first aspect, described at least one 64B/66B stream of codeblocks of acquisition, comprising: FlexE business stream of codeblocks is received, using the FlexE business stream of codeblocks as at least one described 64B/66B stream of codeblocks.This implementation The implementation of example can be applied to the scene of Unaware mapping mode.

In a kind of possible implementation of first aspect, described at least one 64B/66B stream of codeblocks of acquisition, comprising: FlexE business stream of codeblocks is received, the unused time slot in the FlexE business stream of codeblocks is deleted, after unused time slot will be deleted FlexE business stream of codeblocks is as at least one described 64B/66B stream of codeblocks.The implementation of the present embodiment can be applied to The scene of Aware mapping mode.

Second aspect, the embodiment of the present application provide a kind of data transmission method, comprising: receive FlexO stream of codeblocks；According to The FlexO expense of FlexO frame in the FlexO stream of codeblocks is solved from the time slot of the FlexO frame of the FlexO stream of codeblocks At least one 64B/66B stream of codeblocks is precipitated, the rate of each 64B/66B stream of codeblocks is the positive integer times of 5G.

The data transmission method of second aspect, by receiving FlexO stream of codeblocks, from the FlexO frame of FlexO stream of codeblocks when At least one 64B/66B stream of codeblocks is parsed in gap, can form succinct transmission system, to provide flexible loading side Case.

In a kind of possible implementation of second aspect, the FlexO expense includes time slot allocation information, when described Gap distribution information is used to indicate the position that at least one described 64B/66B stream of codeblocks is mapped to the time slot of the FlexO frame.

In a kind of possible implementation of second aspect, the size of the time slot of the FlexO frame is 5G.

In a kind of possible implementation of second aspect, the data transmission method further include: according to it is described at least One 64B/66B stream of codeblocks, recovers original service data.

The third aspect, the embodiment of the present application provide a kind of transmission device, for executing above-mentioned first aspect or first party Method in any possible implementation in face.Specifically, the transmission device may include for execute first aspect or The module of method in any possible implementation of first aspect.

Fourth aspect, the embodiment of the present application provide a kind of transmission device, and the transmission device includes processor and memory, For storing instruction, the processor is used to execute the instruction of the memory storage to the memory, so that the transmission is set Method in the standby any possible implementation for executing first aspect or first aspect.

5th aspect, the embodiment of the present application provides a kind of transmission device, for executing above-mentioned second aspect or second party Method in any possible implementation in face.Specifically, the transmission device may include for execute second aspect or The module of method in any possible implementation of second aspect.

6th aspect, the embodiment of the present application provide a kind of transmission device, and the transmission device includes processor and memory, For storing instruction, the processor is used to execute the instruction of the memory storage to the memory, so that the transmission is set Method in the standby any possible implementation for executing second aspect or second aspect.

7th aspect, the embodiment of the present application provide a kind of computer storage medium, are stored thereon with instruction, work as described instruction When running on computers, so that the computer executes any possible implementation institute of first aspect or first aspect The method stated.

Eighth aspect, the embodiment of the present application provide a kind of computer storage medium, are stored thereon with instruction, work as described instruction When running on computers, so that the computer executes any possible implementation institute of second aspect or second aspect The method stated.

9th aspect, the embodiment of the present application provide a kind of computer program product including instruction, when computer runs institute When stating the finger of computer program product, the computer executes any possible realization of first aspect or first aspect Method described in mode.

Tenth aspect, the embodiment of the present application provide a kind of computer program product including instruction, when computer runs institute When stating the finger of computer program product, the computer executes any possible realization of second aspect or second aspect Method described in mode.

Tenth on the one hand, and the embodiment of the present application provides a kind of Transmission system, the transmission device including third and the 5th aspect, Or the transmission device including the 4th and the 6th aspect.

The third aspect to the tenth one side can be obtained effect and first or second aspect, and to can be obtained effect corresponding, It no longer repeats one by one herein.

Detailed description of the invention

Fig. 1 is the schematic diagram of the data plane of the application one embodiment.

Fig. 2 is the schematic flow chart of the data transmission method of the application one embodiment.

Fig. 3 is the schematic diagram that each road business is mapped to FlexO of the application one embodiment.

Fig. 4 is the schematic diagram of information included by FlexE expense code block.

Fig. 5 is the schematic diagram of the application scenarios of Termination mapping mode.

Fig. 6 is the schematic diagram of the FlexO carrying FlexE business stream of codeblocks of the application one embodiment.

Fig. 7 is the schematic diagram of the application scenarios of Unaware mapping mode.

Fig. 8 is the schematic diagram of the FlexO carrying FlexE business stream of codeblocks of the application another embodiment.

Fig. 9 is the application scenarios schematic diagram of Aware mapping mode.

Figure 10 is the schematic diagram of the FlexO carrying FlexE business stream of codeblocks of the application another embodiment.

Figure 11 is the schematic diagram of the FlexO frame of the application one embodiment.

Figure 12 is the schematic diagram of the FlexO multi-frame of the application another embodiment.

Figure 13 is the schematic diagram of the FlexO expense of the application one embodiment.

Figure 14 is the schematic block diagram of the transmission device of the application one embodiment.

Figure 15 is the schematic block diagram of the transmission device of the application another embodiment.

Figure 16 is the schematic block diagram of the transmission device of the application another embodiment.

Figure 17 is the schematic block diagram of the transmission device of the application another embodiment.

Figure 18 is the schematic block diagram of the transmission device of the application another embodiment.

Figure 19 is the schematic block diagram of the transmission device of the application another embodiment.

Specific embodiment

Below in conjunction with attached drawing, the technical solution in the application is described.

It should be understood that the physical layer link of the embodiment of the present application referred to as " link " can be referred to as " PHY link ".

FlexO technology involved in this specification is simply introduced below.

With the rapidly growth and the diversification of type of service of service traffics, traditional transmission network is provided fixed fast Rate interface, is no longer satisfied demand for interconnection, and industry is more likely to flexible rate interface.Standard branch office, international telecommunication union telecommunication (Telecommunication Standardization Sector for ITU, ITU-T) has formulated n × 100G FlexO group Interface provides flexible rate interface based on the road n 100G rate optical module, for carrying optical channel transmission unit Cn (Optical Channel Transport Unit Cn, OTUCn) signal, realize the interface inter-link between OTUCn signal domain.n×100G Traditional single channel fixed rate optical channel transmission unit k has been broken in the multichannel characteristic of FlexO group interface and flexibility (OTUk) interface form between domain.N × 100G FlexO group interface is made of the channel FlexO of the road n 100G, every road 100G's The channel FlexO can directly be realized using the inexpensive 100G rate optical module of standard.N × 100G FlexO group interface can be with The specific rate of the OTUCn signal of carrying adjust the number of channels of 100G FlexO accordingly so that the n × 100G FlexO group interface can not only meet the requirement on flexibility of domain interface, while can also substantially reduce network construction cost.

With the propulsion that IEEE 802.3 is defined about 200GE and 400GE standard, current FlexO and FlexE is being discussed The port binding of 200G and 400G.According to Current protocol, the mapping path of FlexE signal to FlexO is too long.Transmission device connects After receiving FlexE signal, need to map flexible Ethernet thin layer (FlexE Shim) or FlexE client's (Client) business To light data unit flex (Optical Data Unit-flex, ODUflex), light data unit Cn is then re-mapped (ODUCn), it is finally transferred out again by FlexO.The processing delay and complexity of the mapping process are all very big.With FlexE Gradually increase with the application scenarios of FlexO, importance gradually increases, and carries FlexE signal using FlexO or uses FlexE It is also increasing with the demand of FlexO cooperative transmission.How FlexO to be used simply to carry FlexE, or how made FlexE is efficiently cooperateed with FlexO, to form succinct transmission system, provides flexible based Carrying Scheme, become one it is urgently to be resolved The problem of.

To solve the above-mentioned problems, the embodiment of the present application provides a kind of data transmission method, extends corresponding transmission Layer and channel layer function, FlexO can directly carry FlexE signal, so as to reinforce the cooperative transmission of FlexE and FlexO. Fig. 1 is the schematic diagram of the data plane 100 of the application one embodiment.As shown in Figure 1, data plane 100 includes at least FlexE Channel layer 110 and FlexO transport layer 120.The stream of codeblocks of FlexE channel layer maps directly to FlexO transport layer, forms new biography Defeated system.

As shown in Figure 1, the process flow of business has area because of its type difference on the sending direction of the embodiment of the present application Not.For example, FlexE channel layer 110 can be passed through since the business sheet is as 64B/66B stream of codeblocks for FlexE business It is mapped to FlexO transport layer 120.And other business are directed to, such as video traffic, time division multiplexing (Time Division Multiplexing, TDM) business, Ethernet (EtherNet, Eth) business, common public radio interface (Common Public Radio Interface, CPRI) the packets business, i.e. dynamic bit rate (Variable Bit Rate, VBR) such as business Business or fixed bit rate (Constant Bit Rate, CBR) business, then data plane 100 also needs suitable with business With layer 130.After packet business and/or CBR business are handled by service adapting layer 130,64B/66B stream of codeblocks is generated.Then, should 64B/66B stream of codeblocks is mapped to FlexO transport layer 120 by FlexE channel layer 110.64B/66B stream of codeblocks is transmitted in FlexO Layer 120 is mapped to the corresponding time slot of at least one FlexO frame, and is added FlexO expense, forms FlexO stream of codeblocks.Most Eventually, transmission device transfers out FlexO stream of codeblocks.

It can be with it should be understood that may include class FlexE frame in the 64B/66B stream of codeblocks of the embodiment of the present application, in class FlexE frame Including class FlexE data code block and class FlexE expense code block.The structure of class FlexE frame can be with FlexE frame as defined in agreement Structure is same or similar, can also be different, and the embodiment of the present application is not construed as limiting this.The rate of 64B/66B stream of codeblocks can be with The rate of FlexE as defined in agreement is similar.For example, the rate of 64B/66B stream of codeblocks can be 5G positive integer times, such as 5G, 10G, 15G, 20G, 30G, 50G, 60G or 75G etc..The rate of 64B/66B stream of codeblocks may be other than the positive integer times of 5G Rate, the embodiment of the present application is not construed as limiting this.

It should also be understood that the FlexO frame of the embodiment of the present application may include payload section and overhead area.The embodiment of the present application The payload section of FlexO frame can divide time slot.The size of the time slot of FlexO frame can be 5G, or other sizes, this Shen Please embodiment this is not construed as limiting.

It should also be understood that the embodiment of the present application can divide the time slot of FlexO frame according to 16 byte granularities, it can also be used The time slot of his granularity division FlexO frame.The time slot of FlexO frame is divided using 16 byte granularities, it can good match FlexO frame knot Structure.In addition, existing ODUCn is mapped data by general mapping regulation (Generic Mapping Procedure, GMP) When into FlexO frame, mapped using 16 byte granularities.The embodiment of the present application divides FlexO using 16 byte granularities The time slot of frame can preferably be compatible with existing technology.

In conclusion a kind of data transmission method of the embodiment of the present application may include: to obtain at least one 64B/66B code Block stream, the rate of each 64B/66B stream of codeblocks are the positive integer times of 5G；At least one 64B/66B stream of codeblocks is mapped at least The corresponding time slot of one flexible optical transfer network FlexO frame；FlexO expense is added at least one FlexO frame, forms FlexO code Block stream；Transmit FlexO stream of codeblocks.

64B/66B stream of codeblocks is mapped directly at least one FlexO frame by the data transmission method of the embodiment of the present application Corresponding time slot forms FlexO stream of codeblocks and is transmitted later, can form succinct transmission system, flexibly holds to provide Load scheme.

Still as shown in Figure 1, the embodiment of the present application in a receive direction, receiving end pass through FlexO transport layer 120 receive FlexO stream of codeblocks.Receiving end parses at least one from the time slot of the FlexO frame of FlexO stream of codeblocks in FlexE channel layer 110 A 64B/66B stream of codeblocks, and then recover original service data.If carrying FlexE business in FlexO stream of codeblocks, due to FlexE business sheet is directly applied after parsing FlexO frame as 64B/66B stream of codeblocks, receiving end.If FlexO code block The packets business, i.e. VBR such as other kinds of business, such as video traffic, TDM business, Eth business, CPRI business are carried in stream Business, or carry CBR business, then data plane 100 also needs service adapting layer 130.Receiving end is from FlexE channel layer After 110 parse 64B/66B stream of codeblocks, then is parsed by service adapting layer 130 and obtain original packet business and/or CBR business.

To sum up, for receiving end, another data transmission method of the embodiment of the present application may include: to receive FlexO Stream of codeblocks；According to the FlexO expense of FlexO frame in FlexO stream of codeblocks, parsed from the time slot of the FlexO frame of FlexO stream of codeblocks At least one 64B/66B stream of codeblocks out, the rate of each 64B/66B stream of codeblocks are the positive integer times of 5G.Optionally, which passes Transmission method can also include: to recover original service data according at least one 64B/66B stream of codeblocks.

Fig. 2 is the schematic flow chart of the data transmission method of the application one embodiment.Fig. 2 shows FlexE business The side that (FlexE business stream of codeblocks), Eth business, CBR business #1, CBR business #2 and CBR business #3 pass through the embodiment of the present application The process that method is transmitted.Certainly, the method for the embodiment of the present application can be used for transmitting the business of more or less types, to each Business can also be handled by other means, and the embodiment of the present application is not construed as limiting this.

It include the positive integer times that FlexE frame and rate are usually 5G in FlexE business stream of codeblocks, it can be directly as one 64B/66B stream of codeblocks (such as 64B/66B stream of codeblocks #1) is mapped at least one FlexO frame (for example, FlexO frame #1, FlexO Frame #2 ..., FlexO frame #N) corresponding time slot.

To Eth business carry out 64B/66B coding, obtain 64B/66B data code block, then to 64B/66B data code block into Row rate adaptation is inserted into expense code block (such as every 1023*20 numeric data code in the 64B/66B data code block after rate adaptation Block is inserted into an expense code block), form a 64B/66B stream of codeblocks (such as 64B/66B stream of codeblocks #2).In a specific example In son, the rate of 64B/66B stream of codeblocks #2 is just the positive integer times of 5G, and 64B/66B stream of codeblocks #2 is mapped directly at least The corresponding time slot of one FlexO frame (for example, FlexO frame #1, FlexO frame #2 ..., FlexO frame #N).

64B/66B coding is carried out to CBR business #1,64B/66B data code block is obtained, then to 64B/66B data code block Carry out rate adaptation.In a specific example, though the rate of CBR business #1 is unsatisfactory for the positive integer times of 5G, difference It is smaller, to the positive integer times that can make its rate 5G after CBR business #1 progress IDLE filling.64B/ after rate adaptation It is inserted into expense code block (such as every 1023*20 data code block is inserted into an expense code block) in 66B data code block, forms one 64B/66B stream of codeblocks (such as 64B/66B stream of codeblocks #3).64B/66B stream of codeblocks #3 is mapped at least one FlexO frame (example Such as, FlexO frame #1, FlexO frame #2 ..., FlexO frame #N) corresponding time slot.

64B/66B coding is carried out by CBR business #2,64B/66B data code block is obtained, then to 64B/66B data code block It carries out rate adaptation and obtains 64B/66B code block subflow #X (since its rate is lower, we are called 64B/66B code block subflow), 64B/66B coding is carried out by CBR business #3, obtains 64B/66B data code block, rate then is carried out to 64B/66B data code block Adaptation obtains 64B/66B code block subflow #Y (since its rate is lower, we are called 64B/66B code block subflow).It should be understood that this In rate adaptation effect primarily to carrying out clock switch to two business.It is noted above, the time slot of FlexO frame Size can be 5G.Lower (such as 64B/66B code block of the rate of 64B/66B code block subflow #X and 64B/66B code block subflow #Y The rate of stream is 2.5G) when, as shown in Fig. 2, can be to two 64B/66B code block subflows (64B/66B code block subflow #X and 64B/ 66B code block subflow #Y) it is multiplexed, form the 64B/66B stream of codeblocks #4 of the time slot particle of matching FlexO frame.64B/66B code block Though the rate of subflow #X and 64B/66B code block subflow #Y and can be the positive integer times of 5G or rate and be unsatisfactory for 5G just Integral multiple, but be multiplexed and carry out the positive integer times that can make its rate 5G after IDLE filling.The 64B/66B that multiplexing is obtained Stream of codeblocks #4 be mapped at least one FlexO frame (for example, FlexO frame #1, FlexO frame #2 ..., FlexO frame #N) it is corresponding when Gap.It should be understood that 64B/66B stream of codeblocks #4 is since multiplexing obtains, frame structure is differed with the structure of FlexE frame may be compared with Greatly.Correspondingly, described at least one 64B/66B stream of codeblocks of acquisition may include: to receive at least the second client traffic of two-way；It is right Second client traffic of at least two-way carries out 64B/66B coding, obtains at least two-way 64B/66B data code block；To it is described extremely Few two-way 64B/66B data code block carries out rate adaptation；In at least two-way 64B/66B data code block after rate adaptation respectively It is inserted into expense code block, forms at least two 64B/66B code block subflows；At least two 64B/66B code block subflow is answered With obtaining at least one described 64B/66B stream of codeblocks.

The data transmission method of the embodiment of the present application can be applied to transmission FlexE business stream of codeblocks, and FlexO can be simple Ground carries FlexE and forms succinct transmission system so that FlexE is efficiently cooperateed with FlexO.In addition, the number of the embodiment of the present application It can also be applied to transmit other kinds of client traffic (such as non-FlexE business) according to transmission method, by other client traffics It is encoded into the 64B/66B stream of codeblocks of similar FlexE stream of codeblocks, FlexO transport layer is mapped to by FlexE channel layer and is passed Defeated, the process is very efficiently simple.

Fig. 3 is the schematic diagram that each road business is mapped to FlexO of the application one embodiment.Specifically, the application is real It applies example and each road business is mapped to by FlexO transport layer by FlexE channel layer.For example, as shown in figure 3, obtaining 3 64B/ 66B stream of codeblocks (64B/66B stream of codeblocks #A, 64B/66B stream of codeblocks #B and 64B/66B stream of codeblocks #C), can carry institute above The multiple business stated, rate are the positive integer times of 5G.Each 64B/66B stream of codeblocks can be by multiplexing obtain (such as 64B/66B stream of codeblocks #A) it is also possible to non-multiplexed obtained (such as 64B/66B stream of codeblocks #B and 64B/66B stream of codeblocks #C). Wherein, every certain data code block (#1, # in non-multiplexed obtained 64B/66B stream of codeblocks #B and 64B/66B stream of codeblocks #C 2 ..., #e-1, #e), there are an expense code block, usual e can be 1023*20.The 64B/66B code block obtained by multiplexing It flows every certain data code block (#1, #2 ..., #d-1, #d) in #A, there are an expense code block, d is not strictly 1023*20. 3 64B/66B stream of codeblocks are mapped to FlexO transport layer by FlexE channel layer.

It should be understood that be far below 5G, and the client's industry that can be multiplexed with it without other client traffics for rate again Business, a kind of optional scheme are directly to add a large amount of IDLE code blocks in rate adaptation to improve its rate to 5G.Another kind can The scheme of choosing is the 64B/66B code block subflow of a low speed to be generated to the client traffic, and it is all to generate at least one filling The 64B/66B code block subflow of IDLE code block (i.e. content be sky) rate of above-mentioned at least two 64B/66B code block subflow and is 5G.The corresponding time slot of FlexO will be mapped to after the multiplexing of at least two 64B/66B code block subflows.Such as: if carrying client business 64B/66B code block sub-stream rate be 2.5G, then the filling code block subflow of phase same rate all the way can be generated.For another example, if held The 64B/66B code block sub-stream rate for carrying client traffic is 1.25G, then the filling code block subflow of three tunnel phase same rates can be generated.

It is described in detail below with reference to several embodiments in the data transmission of the embodiment of the present application and obtains 64B/66B stream of codeblocks Process.

Embodiment 1:

In the present embodiment, obtain at least one 64B/66B stream of codeblocks, may include: receive the first client traffic (such as For non-FlexE business)；64B/66B coding is carried out to the first client traffic, obtains 64B/66B data code block；To 64B/66B number Rate adaptation is carried out according to code block；It is inserted into expense code block in 64B/66B data code block after rate adaptation, forms at least one 64B/66B stream of codeblocks.

It should be understood that the client traffic in the present embodiment may include above described in packet business and fixed bit rate CBR At least one of business, can also include other kinds of client traffic, and the present embodiment is not construed as limiting this.

Specifically, client traffic is uniformly fitted to 64B/66B code block by the present embodiment, and pass through IDLE additions and deletions for 64B/ 66B data code block rate adaptation is extremely in the same size with the time slot of FlexO frame, is inserted into expense code block.Such as: every 1023* 20 code blocks are inserted into an expense code block and monitor respective business.The 64B/66B stream of codeblocks of each speed grade is formed as a result,.Finally, The 64B/66B stream of codeblocks of each speed grade is mapped in the correspondence time slot of FlexO frame.

Fig. 4 is the schematic diagram of information included by FlexE expense code block.As shown in figure 4,32 continuous FlexE frame structures At a FlexE multi-frame, a FlexE OH frame is made of 8 continuous FlexE OH code blocks.First code block in FlexE frame Using " 0x4B " or " 0x5 " field as tag field, with the code block for identification for OH code block.It is transmitted on each link It include flexible Ethernet group ID (FlexE Group IDentification), physical link mapping (PHY in FlexE OH frame Map) information, physical link ID (PHY IDentification), Schedule (Calendar) A, Calendar B, segmentation Management passage (Section Management Channel) and layer are to layer-management channel (shim-to-shim Management The fields such as Channel).There are also some reservation regions (Reserved) in FlexE OH frame.FlexE Group IDentification is used to indicate the number of the flexible Ethernet group where the link；PHY Map is used to indicate the link institute Flexible Ethernet group in include PHY distribution；Calendar A and Calendar B are respectively used to indicate the FlexE Current Calendar configuration and the spare Calendar of Group is configured.The content of the expense code block of the insertion of the embodiment of the present application It can also include additional information except the content including the FlexE expense code block.For example, the insertion of the embodiment of the present application is opened Selling code block can also include time stab information, carry out clock recovery to each client traffic for receiving end.Optionally, the time stab information It can be 32bit.The expense code block of the insertion of the embodiment of the present application can also include automatic protection switching (Automatic Protection Switched, APS) information.Optionally, which can be 32bit.The insertion of the embodiment of the present application Expense code block can also include Time delay measurement information, can support loop measurement and unidirectional measurement.Optionally, which believes Breath can be 32bit.The expense code block of the insertion of the embodiment of the present application can also include that path tracing indicates (Trail Trace Identifier, TTI), the 64byte that can continue to use optical transfer network (Optical Transport Network, OTN) is fixed Justice.Since the instruction can be handled slowly, it can be embodied using multi-frame mode, 1 byte or 2 can be occupied in an expense frame A byte.

Above-mentioned additional information can occupy the region Reserved of the FlexE expense code block of Fig. 4, can also occupy sectional pipe It manages channel (Section Management Channel), the embodiment of the present application is not construed as limiting this.

In a specific example, the signal of access is G bit (gigabit) Ethernet (GE) business, the code block of GE business For 8B/10B code block.Standard G.7041 in define a kind of method that 8B/10B code block is converted into 64B/65B code block, such as table 1 It is shown.The 64B/66B coding and the difference that 64B/65B is encoded of the present embodiment are that solve 8 8B (8bit) are same in addition block When walking head, no longer adds 1 bit (bit) and form 65B code block, but add 2bit synchronous head and form 66B.Synchronous head " 01 " indicates Subsequent 64bit is data.Then rate-matched is carried out by addition IDLE code block again.Every 1023*20 64B/66B number Expense code block is added according to code block.

1 64B/65B transcoding table of table

In the lower situation of rate of GE business, the present embodiment can encode to form 64B/66B code block by 64B/66B Subflow interleaves multiple connection (being multiplexed) for the 64B/ of one 5G of the corresponding 64B/66B code block subflow formation of 4 road GE business by code block 66B stream of codeblocks.The detailed process of multiplexing is described in detail above, is no longer repeated herein.

Above description is unfolded from transmitting terminal angle, and for receiving end, receiving end is logical according to the information in FlexO expense It crosses and parses 64B/66B stream of codeblocks.For the 64B/66B stream of codeblocks for the 5G that multiplexing is formed, receiving end is further according to parsing The demultiplexed original 64B/66B stream of codeblocks of expense code block in 64B/66B stream of codeblocks then carries out IDLE additions and deletions, obtains original The client traffic of beginning.

Embodiment 2:

In the present embodiment, at least one 64B/66B stream of codeblocks is obtained, may include: to receive FlexE business stream of codeblocks, FlexE business stream of codeblocks is resolved at least one FlexE client traffic stream of codeblocks, the code in FlexE client traffic stream of codeblocks Block is 64B/66B code block；It is inserted into expense code block in FlexE client traffic stream of codeblocks, forms at least one 64B/66B code block Stream.

It should be understood that the present embodiment may be considered 64B/66B stream of codeblocks through termination (Termination) mapping mode It is mapped to the correspondence time slot of FlexO frame.

Fig. 5 is the schematic diagram of the application scenarios of Termination mapping mode.Fig. 6 is in the application one embodiment FlexO is with the schematic diagram of Termination mapping mode carrying FlexE business stream of codeblocks.In the present embodiment, optical transfer network (OTN) transmitting terminal receives FlexE business stream of codeblocks.For example, receiving 100G by m*100G FlexE Group shown in fig. 6 FlexE frame #1 ..., 100G FlexE frame #j ..., 100G FlexE frame #m.Transmitting terminal perceives and the Ethernet thin slice that terminates (FlexE Shim), parse and recover the flexible Ethernet client of flexible Ethernet client (Flex Ethernet Client, FlexE Client) business stream of codeblocks.Such as FlexE Client business stream of codeblocks #1, FlexE Client industry shown in fig. 6 Be engaged in stream of codeblocks #2 ..., FlexE Client business stream of codeblocks #i ..., FlexE Client business stream of codeblocks #j ..., FlexE Client business stream of codeblocks #n-1, FlexE Client business stream of codeblocks #n.Transmitting terminal is to each FlexE Client service code Block stream carries out rate adaptation by additions and deletions IDLE code block, then is inserted into an expense code block every 1023*20 code block, forms extension FlexE stream of codeblocks (64B/66B stream of codeblocks).It should be understood that the expense code block of insertion can be with expense code block described in embodiment 1 Unanimously, details are not described herein again.Each FlexE Client business stream of codeblocks can flexibly be distributed to the time slot of q*100G FlexO group, press Regulation (IDLE Mapping Procedure, IMP) or GMP method are mapped by each FlexE Client business stream of codeblocks according to the free time It is mapped in one or more FlexO frame.For example, the code stream is mapped to FlexO frame #1 ..., FlexO frame #j ..., FlexO In the corresponding time slot of frame #q.Wherein, FlexO frame may include p time slot (for example, time slot #1 ..., time slot #j ..., time slot # P), there is FlexO expense in FlexO frame.It should be noted that Figure 12 and relevant description give and carry out time slot to FlexO frame The specific method of division is illustrated, and it will not go into details herein.At least one FlexO frame forms at least one FlexO stream of codeblocks, FlexO Stream of codeblocks can be 100G stream of codeblocks.

Above description is unfolded from transmitting terminal angle, and for receiving end, receiving end is logical according to the information in FlexO expense It crosses IMP/GMP method and parses spread F lexE stream of codeblocks.Receiving end is extensive further according to the expense code block in spread F lexE stream of codeblocks Appear again FlexE Shim.

Embodiment 3:

In the present embodiment, at least one 64B/66B stream of codeblocks is obtained, may include: to receive FlexE business stream of codeblocks, Using FlexE business stream of codeblocks as at least one 64B/66B stream of codeblocks.

64B/66B stream of codeblocks is reflected by unaware (Unaware) mapping mode it should be understood that the present embodiment may be considered It is mapped to the correspondence time slot of FlexO frame.

Fig. 7 is the schematic diagram of the application scenarios of Unaware mapping mode.Fig. 8 is FlexO in another embodiment of the application With the schematic diagram of Unaware mapping mode carrying FlexE business stream of codeblocks.In the present embodiment, transmitting terminal receives FlexE service code Block stream.For example, receiving 100G FlexE frame #1 ..., 100G FlexE frame # by m*100G FlexE Group shown in Fig. 8 J ..., 100G FlexE frame #m.FlexE is per 100G FlexE frame (i.e. FlexE business stream of codeblocks) independent process all the way, FlexO Not perceiving whether carry is FlexE business, and FlexE business stream of codeblocks is mapped to FlexO frame according to the GMP of 16 byte granularities Corresponding time slot in.It wherein, may include p time slot in each FlexO frame (for example, time slot #1 ..., time slot #j ..., time slot # P), there is FlexO expense in FlexO frame.The present embodiment need to meet the total rate of FlexE less than or equal to the total rate of FlexO, such as FlexE business stream of codeblocks and FlexO stream of codeblocks are 100G, only 1 time slot in FlexO frame.If 100G FlexE business Stream of codeblocks is mapped in the FlexO frame of 200G FlexO stream of codeblocks, then FlexO frame need to divide 2 time slots.

Embodiment 4:

In the present embodiment, at least one 64B/66B stream of codeblocks is obtained, may include: to receive FlexE business stream of codeblocks, Unused time slot in FlexE business stream of codeblocks is deleted, the FlexE business stream of codeblocks after unused time slot will be deleted as at least one A 64B/66B stream of codeblocks.

64B/66B stream of codeblocks is mapped to by perception (Aware) mapping mode it should be understood that the present embodiment may be considered The correspondence time slot of FlexO frame.

Fig. 9 is the schematic diagram of the application scenarios of Aware mapping mode.Figure 10 is FlexO in another embodiment of the application With the schematic diagram of Aware mapping mode carrying FlexE business stream of codeblocks.In the present embodiment, transmitting terminal receives FlexE business code block Stream, such as 100G FlexE frame #1 ..., 100G FlexE frame # are received by m*100G FlexE Group shown in Fig. 10 J ..., 100G FlexE frame #m.FlexO perceives FlexE business, identifies the time slot service condition of FlexE Shim, deletes unused Time slot forms spread F lexE stream of codeblocks, and spread F lexE stream of codeblocks is respectively provided with respective sub- rate (sub-rate), such as.It presses FlexE business stream of codeblocks is mapped in the corresponding time slot of FlexO frame according to the GMP of 16 byte granularities.Wherein, FlexO frame can be with Including p time slot (for example, time slot #1 ..., time slot #j ..., time slot #p), there is FlexO expense in FlexO frame.FlexO can pass through One or more pipeline carries FlexE business.In the case where multichannel carrying, each road is needed with identical traffic path.It needs Illustrate, Figure 12 and relevant description give the citing of the time slot division methods about FlexO frame, and it will not go into details herein.

Above description is unfolded from transmitting terminal angle, and for receiving end, receiving end is according to the information solution in FlexO expense Spread F lexE stream of codeblocks is precipitated.Restore the deleted non-used time further according to the expense code block in spread F lexE stream of codeblocks in receiving end Gap, to recover FlexE Shim.

The FlexO frame of each embodiment of the application is described in detail below.Figure 11 is the FlexO frame of the application one embodiment Schematic diagram.As shown in figure 11, a FlexO frame may include the frame head (overhead area) and 5130 bytes of 10 byte block sizes Area payload (payload) of block size.Block of bytes is specifically divided referring to Figure 12.Figure 12 is the application one embodiment The schematic diagram of FlexO multi-frame.As shown in figure 12, a FlexO frame may include 128 rows, every row 5440bit.Wherein, every row packet Include 300bit forward error correction (Forward Error Correction, FEC).One FlexO frame is divided by 16 bytes, can be with It is divided into 5140 block of bytes (each byte block size is 16 bytes).Frame head may include alignment mark (Alignment Marker, AM) and OH, totally 160 bytes (10 block of bytes).According to above-mentioned FlexO frame format, it is if to obtain time slot size The FlexO stream of codeblocks of 5G, each FlexO multi-frame need to divide 20 time slots (time slot).Even number FlexO frame can be with structure At FlexO multi-frame, for example, Figure 12 shows the case where 2 FlexO frames constitute a FlexO multi-frame.One 5G time slot can be with Including 513 block of bytes, first time slot as shown in figure 12 (such as being known as time slot 1, be denoted as ts1) can be by block of bytes Ts1.1, ts1.2 ..., ts1.i ..., ts1.217 ..., ts1.j ..., ts1.513 composition.Remaining 19 time slots are also class As, details are not described herein again.It should be noted that as shown in figure 12, the 217th block of bytes of time slot 1 to time slot 10 is multiple in FlexO First FlexO frame of frame, the second FlexO frame of the 217th block of bytes of time slot 11 to time slot 20 in FlexO multi-frame.

It should be understood that the structure of FlexO frame shown in Figure 11 and Figure 12 and FlexO multi-frame is exemplary only, without to this Apply for that embodiment generates restriction.In practical implementations, the different technologies encoded according to FEC, the size in the region FEC may have not Together.Or the area payload can have filling code block.But these do not affect FlexO frame and divide by 16 bytes, effective load Area will keep the positive integer times of 16 bytes.It in other words, include 5130 byte block sizes in a FlexO frame in above-mentioned example Payload section, this is only example, and the embodiment of the present application can neatly deform it, obtains other FlexO frame formats. When dividing FlexO frame in other formats, the number of included FlexO frame can be not limited to even number in FlexO multi-frame.

It should also be understood that the embodiment of the present application can divide time slot with 5G particle, it can also be with other bandwidth partition time slots, this Application embodiment is not construed as limiting this.

Figure 13 is the structural schematic diagram of the FlexO expense of the application one embodiment.One such as Figure 13 are constituted by 8 multi-frames Shown in a complete expense (subsequent abbreviation FlexO expense).Since the embodiment of the present application has divided time slot in FlexO frame, Therefore, FlexO expense may include time slot (Calendar Slot) distribution information, time slot allocation information be used to indicate it is described extremely A few 64B/66B stream of codeblocks is mapped to the position of the time slot of FlexO frame.It may include time slot point in FlexO expense With information, it is used to indicate each 64B/66B stream of codeblocks and has been respectively mapped on which time slot position.Specifically, time slot allocation Information may include the traffic identifier of 64B/66B stream of codeblocks, traffic identifier perhaps including multiplexed 64B/66B stream of codeblocks or Including corresponding type of service mark of 64B/66B stream of codeblocks etc., the embodiment of the present application is not construed as limiting this.

It should be understood that the time slot allocation information in the case where multiple 64B/66B stream of codeblocks are multiplexed, in FlexO expense Indicated is the time slot position that multiplexed 64B/66B stream of codeblocks is mapped to FlexO frame.

In addition, FlexO expense can also include CR/CA/C field to support time slot adjustment and refresh function.FlexO expense Definition can be as shown in figure 13.The definition of expense can continue to use the corresponding expense definition of FlexE.Field C be used to indicate by The field of the time slot allocation (calendar configuration in use) used.Field CR is time gas exchange request (Calendar Switch Request) field.Field CA is time gas exchange confirmation (Calendar Switch Acknowledge) field.

It can also include clock information in FlexO expense, which is used to carry the relevant information of clock lane, such as The information such as 1588 messages.

In addition, in FlexO expense can also include multi-frame aligned signal (Multi-frame Alignment Signal, MFAS), group mark (Group IDentification, GID), physical link mark (PHY IDentification, PID), Physical link map (PHY Map, MAP), state (Status, STAT) information, OTUC it is available (OTUC Availability, AVAIL) information, the cyclic redundancy check position (Cyclic Redundancy Check, CRC) and FlexO management passage (FlexO Management Communications Channel, FCC) etc., the embodiment of the present application is not limited to this.

It should be understood that the structure of the FlexO expense shown in Figure 13 is merely exemplary, FlexO expense can have other knots Structure, the embodiment of the present application are not construed as limiting this.

Optionally, the data transmission method of each embodiment of the application, can be at least one 64B/66B stream of codeblocks of acquisition Intersected, complete the traffic grooming of spread F lexE stream of codeblocks, is again mapped at least one 64B/66B stream of codeblocks after intersecting To the corresponding time slot of at least one FlexO frame.Intersecting can be intersected based on existing TDM crossover mechanism and/or cell (cell) Mechanism.

Described above is data transmission methods provided by the embodiments of the present application, are described below provided by the embodiments of the present application Data transmission device.

Figure 14 is the schematic block diagram of the transmission device 200 of the application one embodiment.The transmission device 200 is transmitting terminal Equipment.A kind of transmission device 200 may include: to obtain module 210 as shown in figure 14, for obtaining at least one 64B/66B Stream of codeblocks, the rate of each 64B/66B stream of codeblocks are the positive integer times of 5G；Mapping block 220, for will acquire module 210 obtain at least one described 64B/66B stream of codeblocks be mapped at least one flexible optical transfer network FlexO frame it is corresponding when Gap；Expense module 230 forms FlexO stream of codeblocks for adding FlexO expense at least one described FlexO frame；Send mould Block 240 is used for transmission the FlexO stream of codeblocks.

64B/66B stream of codeblocks is mapped directly to the corresponding of at least one FlexO frame by the transmission device of the embodiment of the present application Time slot forms FlexO stream of codeblocks and is transmitted later, succinct transmission system can be formed, to provide flexible loading side Case.

Optionally, as one embodiment, the FlexO expense includes time slot allocation information, the time slot allocation information It is used to indicate the position that at least one described 64B/66B stream of codeblocks is mapped to the time slot of at least one FlexO frame.

Optionally, as one embodiment, the size of the time slot of the FlexO frame is 5G.

Optionally, as one embodiment, the acquisition module 210 is specifically used for: receiving the first client traffic；To described First client traffic carries out 64B/66B coding, obtains 64B/66B data code block；Rate is carried out to the 64B/66B data code block Adaptation；It is inserted into expense code block in 64B/66B data code block after rate adaptation, forms at least one described 64B/66B code block Stream.

Optionally, as one embodiment, the client traffic include in packet business and fixed bit rate CBR business extremely Few one kind.

Optionally, as one embodiment, the acquisition module 210 is specifically used for: receiving at least the second client of two-way industry Business；64B/66B coding is carried out to second client traffic of at least two-way, obtains at least two-way 64B/66B data code block；To institute It states at least two-way 64B/66B data code block and carries out rate adaptation；In at least two-way 64B/66B data code block after rate adaptation It is inserted into expense code block respectively, forms at least two 64B/66B code block subflows；To at least two 64B/66B code block subflow into Row multiplexing obtains at least one described 64B/66B stream of codeblocks.

Optionally, as one embodiment, the acquisition module 210 is specifically used for: FlexE business stream of codeblocks is received, it will The FlexE business stream of codeblocks resolves at least one FlexE client traffic stream of codeblocks, the FlexE client traffic stream of codeblocks In code block be 64B/66B code block；It is inserted into expense code block in the FlexE client traffic stream of codeblocks, forms described at least one A 64B/66B stream of codeblocks.

Optionally, as one embodiment, the acquisition module 210 is specifically used for: FlexE business stream of codeblocks is received, it will The FlexE business stream of codeblocks is as at least one described 64B/66B stream of codeblocks.

Optionally, as one embodiment, the acquisition module 210 is specifically used for: FlexE business stream of codeblocks is received, it will Unused time slot in the FlexE business stream of codeblocks is deleted, and will delete the FlexE business stream of codeblocks after unused time slot as described in At least one 64B/66B stream of codeblocks.

Figure 15 is the schematic block diagram of the transmission device 300 of the application one embodiment.The transmission device 300 is transmitting terminal Equipment.A kind of transmission device 300 may include processor 310 and memory 320 as shown in figure 15, in the memory 310 Be stored with computer instruction, when the processor 320 executes the computer instruction so that the transmission device 300 execute with Lower step:

At least one 64B/66B stream of codeblocks is obtained, the rate of each 64B/66B stream of codeblocks is the positive integer times of 5G；

By at least one described 64B/66B stream of codeblocks be mapped at least one flexible optical transfer network FlexO frame it is corresponding when Gap；

FlexO expense is added at least one described FlexO frame, forms FlexO stream of codeblocks；

Transmit the FlexO stream of codeblocks.

When processor 320 executes the computer instruction, the transmission device 300 is allowed specifically to execute aforementioned number According to the related embodiment of transmission method, no longer repeat one by one herein.

Optionally, transmission device 300 can also include network interface 330, be used for transmission data.

It should be understood that transmission device 200 or transmission device shown in figure 15 300 shown in Figure 14 can be used for executing the above method The operation or process of embodiment, and the operation of transmission device 200 or modules and device in transmission device 300 and/or Function is respectively in order to realize the corresponding process in above method embodiment, for sake of simplicity, details are not described herein.

Figure 16 is the schematic block diagram of the transmission device 400 of the application one embodiment.The transmission device 400 is receiving end Equipment.A kind of transmission device 400 may include: receiving module 410 as shown in figure 16, for receiving FlexO stream of codeblocks；First Parsing module 420, for the FlexO expense according to FlexO frame in the received FlexO stream of codeblocks of the receiving module 410, At least one 64B/66B stream of codeblocks is parsed from the time slot of the FlexO frame of the FlexO stream of codeblocks, it is each described The rate of 64B/66B stream of codeblocks is the positive integer times of 5G.

The transmission device of the embodiment of the present application receives FlexO stream of codeblocks, from the time slot of the FlexO frame of FlexO stream of codeblocks At least one 64B/66B stream of codeblocks is parsed, succinct transmission system can be formed, to provide flexible based Carrying Scheme.

Optionally, as one embodiment, the FlexO expense includes time slot allocation information, the time slot allocation information It is used to indicate the position that at least one described 64B/66B stream of codeblocks is mapped to the time slot of the FlexO frame.

Optionally, as one embodiment, the transmission device 400 further includes the second parsing module, is used for: according to described At least one described 64B/66B stream of codeblocks that first parsing module parses, recovers original service data.

Figure 17 is the schematic block diagram of the transmission device 500 of the application one embodiment.The transmission device 500 is receiving end Equipment.A kind of transmission device 500 may include processor 510 and memory 520 as shown in figure 17, in the memory 510 Be stored with computer instruction, when the processor 520 executes the computer instruction so that the transmission device 500 execute with Lower step:

Receive FlexO stream of codeblocks；

According to the FlexO expense of FlexO frame in the FlexO stream of codeblocks, from the FlexO of the FlexO stream of codeblocks At least one 64B/66B stream of codeblocks is parsed in the time slot of frame, the rate of each 64B/66B stream of codeblocks is the positive integer of 5G Times.

When processor 520 executes the computer instruction, the transmission device 500 is allowed specifically to execute aforementioned number According to the related embodiment of transmission method, no longer repeat one by one herein.

Optionally, transmission device 500 can also include network interface 530, be used for transmission data.

It should be understood that transmission device 500 shown in transmission device 400 or Figure 17 shown in Figure 16 can be used for executing the above method The operation or process of embodiment, and the operation of transmission device 400 or modules and device in transmission device 500 and/or Function is respectively in order to realize the corresponding process in above method embodiment, for sake of simplicity, details are not described herein.

Figure 18 is the schematic block diagram of the transmission device 600 of the application one embodiment.Transmission device 600 is transmitting terminal Equipment.Transmission device 600 has intersection or dispatching, and structure is branch line separated structure.As shown in figure 16, transmission device 600 may include 630 3 pieces of tributary card 610, cross board 620 and wiring board chips.Tributary card carries out code block for receiving business In type conversion (transcoding), data stream sliced sheet, Shim processing, 64B/66B coding, rate adaptation, multiplexing and demultiplexing at least One kind, and the processing that tributary card carries out is not limited only to this.For example, the tributary card shown in Figure 18 completes Eth business first The conversion of code block type and rate adaptation (being completed by transcoding adaptation module 611) are inserted into expense code block and form spread F lexE code block It flows (being completed by class FlexE module 612), being then fed into class Multiplexing module 613 (can be class demultiplexing if it is receiving device Module is not shown in the figure for demultiplexing) it is multiplexed, it may also not need to be multiplexed certainly.For another example, it for TDM business, completes Data stream sliced sheet and rate adaptation (being completed by slice adaptation module 614), be inserted into expense formed spread F lexE stream of codeblocks (by Class FlexE module 615 is completed), it is then fed into class Multiplexing module 613 and is multiplexed and (may also not need to be multiplexed).For another example, for FlexE business, carry out standard Shim processing (being completed by Shim module 616) after, can be routed directly to next module (such as Class Multiplexing module 613 can also be routed directly to cross board 620), it can also be after termination criteria Shim, then to FlexE Client Insertion expense to form spread F lexE stream of codeblocks (being completed by class FlexE module 617), then is sent to next module.Cross board For being dredged business and being adapted to.Wiring board for be multiplexed, demultiplex, mapping, FlexO framing and by phy interface hair At least one of out, and the processing that wiring board carries out is not limited only to this.For example, Figure 18 shows mapping block 631, mapping Module 632, FlexO framing module 633, FlexO framing module 634, phy interface 635, phy interface 636 and class Multiplexing module 637 (can be class demultiplexing module for demultiplexing if it is receiving device, be not shown in the figure).

The equipment that should be understood that corresponding receiving end is similar with 600 structure of transmission device, only the transmission direction phase of data Instead, details are not described herein again.

Figure 19 is the schematic block diagram of the transmission device 700 of the application one embodiment.Transmission device 700 is that transmitting terminal is set It is standby.Transmission device 700 is transponder (transponder) or multiplexing transponder (muxponder) for fixing line transmission, There is no Cross module or cross board, including chip piece.As shown in figure 19, transmission device 700 may include transcoding adaptation module 701 and class FlexE module 702, for handling Eth business；It is sliced adaptation module 703 and class FlexE module 704, for handling TDM business；Shim module 705 and class FlexE module 706, for handling FlexE business；Class Multiplexing module 707 is for being multiplexed (can be class demultiplexing module for demultiplexing if it is receiving device, be not shown in the figure)；Mapping block 708, mapping mould Block 709, FlexO framing module 710, FlexO framing module 711, phy interface 712 and phy interface 713, for that will extend FlexE stream of codeblocks is mapped to FlexO and framing, finally issues.

The equipment that should be understood that corresponding receiving end is similar with 700 structure of transmission device, only the transmission direction phase of data Instead, details are not described herein again.

It should be noted that two kinds of equipment citing shown in Figure 18 and Figure 19 can execute the step in preceding method embodiment Suddenly, details are not described herein again.

It should be understood that the processor referred in the embodiment of the present application can be central processing unit (Central Processing Unit, CPU), it can also be other general processors, digital signal processor (Digital Signal Processor, DSP), it is specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing At programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete Door or transistor logic, discrete hardware components etc..General processor can be microprocessor or the processor can also To be any conventional processor etc..

It should also be understood that the memory referred in the embodiment of the present application can be volatile memory or non-volatile memories Device, or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read-Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), erasable programmable are only Read memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, ) or flash memory EEPROM.Volatile memory can be random access memory (Random Access Memory, RAM), use Make External Cache.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random-access Memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random-access Memory (Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate SDRAM, DDR SDRAM), it is enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), same Step connection dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory (Direct Rambus RAM, DR RAM).

It should be noted that when processor is general processor, DSP, ASIC, FPGA or other programmable logic devices When part, discrete gate or transistor logic, discrete hardware components, memory (memory module) is integrated in the processor.

It should be noted that memory described herein is intended to include but is not limited to the storage of these and any other suitable type Device.

The embodiment of the present application also provides a kind of computer readable storage medium, is stored thereon with instruction, when described instruction exists When being run on computer, so that the computer executes the data transmission method of above method embodiment.

The embodiment of the present application also provides a kind of computer program product including instruction, which is characterized in that when computer is transported When the finger of the row computer program product, the computer executes the data transmission method of above method embodiment.

The embodiment of the present application also provides a kind of Transmission system, comprising: the transmission device of the transmitting terminal of the embodiment of the present application and The transmission device of the receiving end of the embodiment of the present application.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program Product includes one or more computer instructions.It is all or part of when loading on computers and executing the computer instruction Ground is generated according to process or function described in the embodiment of the present application.The computer can be general purpose computer, special purpose computer, Computer network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or Person is transmitted from a computer readable storage medium to another computer readable storage medium, for example, the computer instruction Wired (such as coaxial cable, optical fiber, digital subscriber can be passed through from a web-site, computer, server or data center Line (Digital Subscriber Line, DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another website Website, computer, server or data center are transmitted.The computer readable storage medium can be computer and can deposit Any usable medium taken either includes that the data storages such as one or more usable mediums integrated server, data center are set It is standby.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape), optical medium (for example, high-density digital video CD (Digital Video Disc, DVD)) or semiconductor medium (for example, solid state hard disk (Solid State Disk, SSD)) etc..

It should be understood that the differentiation that first, second and various digital numbers that are referred to herein only carry out for convenience of description, and It is not limited to scope of the present application.

It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can deposit In three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B. In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

It should be understood that magnitude of the sequence numbers of the above procedures are not meant to execute suitable in the various embodiments of the application Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present application Process constitutes any restriction.

Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed Scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.

The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.

Claims

1. a kind of data transmission method characterized by comprising

At least one described 64B/66B stream of codeblocks is mapped to the corresponding time slot of at least one flexible optical transfer network FlexO frame；

Transmit the FlexO stream of codeblocks.

2. data transmission method according to claim 1, which is characterized in that the FlexO expense includes time slot allocation letter Breath, the time slot allocation information are used to indicate at least one described 64B/66B stream of codeblocks and are mapped at least one described FlexO The position of the time slot of frame.

3. data transmission method according to claim 1 or 2, which is characterized in that the time slot of the FlexO frame it is big Small is 5G.

4. data transmission method according to any one of claim 1 to 3, which is characterized in that described to obtain at least one 64B/66B stream of codeblocks, comprising:

Receive the first client traffic；

64B/66B coding is carried out to first client traffic, obtains 64B/66B data code block；

Rate adaptation is carried out to the 64B/66B data code block；

It is inserted into expense code block in 64B/66B data code block after rate adaptation, forms at least one described 64B/66B code block Stream.

5. data transmission method according to claim 4, which is characterized in that first client traffic include packet business and At least one of fixed bit rate CBR business.

6. data transmission method according to any one of claim 1 to 5, which is characterized in that described to obtain at least one 64B/66B stream of codeblocks, comprising:

Receive at least the second client traffic of two-way；

64B/66B coding is carried out to second client traffic of at least two-way, obtains at least two-way 64B/66B data code block；

Rate adaptation is carried out at least two-way 64B/66B data code block；

Expense code block is inserted at least two-way 64B/66B data code block after rate adaptation respectively, forms at least two 64B/ 66B code block subflow；

At least two 64B/66B code block subflow is multiplexed, at least one described 64B/66B stream of codeblocks is obtained.

7. data transmission method according to any one of claim 1 to 6, which is characterized in that described to obtain at least one 64B/66B stream of codeblocks, comprising:

FlexE business stream of codeblocks is received, the FlexE business stream of codeblocks is resolved at least one FlexE client traffic code block It flows, the code block in the FlexE client traffic stream of codeblocks is 64B/66B code block；

It is inserted into expense code block in the FlexE client traffic stream of codeblocks, forms at least one described 64B/66B stream of codeblocks.

8. data transmission method according to any one of claim 1 to 7, which is characterized in that described to obtain at least one 64B/66B stream of codeblocks, comprising:

FlexE business stream of codeblocks is received, using the FlexE business stream of codeblocks as at least one described 64B/66B stream of codeblocks.

9. data transmission method according to any one of claim 1 to 8, which is characterized in that described to obtain at least one 64B/66B stream of codeblocks, comprising:

FlexE business stream of codeblocks is received, the unused time slot in the FlexE business stream of codeblocks is deleted, unused time slot will be deleted FlexE business stream of codeblocks afterwards is as at least one described 64B/66B stream of codeblocks.

10. a kind of transmission device, which is characterized in that including processor and memory, be stored with computer in the memory and refer to It enables, when the processor executes the computer instruction, so that the transmission device executes following steps:

Transmit the FlexO stream of codeblocks.

11. transmission device according to claim 10, which is characterized in that the FlexO expense includes time slot allocation information, The time slot allocation information is used to indicate at least one described 64B/66B stream of codeblocks and is mapped at least one described FlexO frame Time slot position.

12. transmission device described in 0 or 11 according to claim 1, which is characterized in that the time slot of the FlexO frame it is big Small is 5G.

13. transmission device according to any one of claims 10 to 12, which is characterized in that described in the processor executes When computer instruction, so that the transmission device specifically executes:

Receive the first client traffic；

Rate adaptation is carried out to the 64B/66B data code block；

14. transmission device according to claim 13, which is characterized in that first client traffic includes packet business and consolidates At least one of bit rates CBR business.

15. transmission device described in any one of 0 to 14 according to claim 1, which is characterized in that described in the processor executes When computer instruction, so that the transmission device specifically executes:

Receive at least the second client traffic of two-way；

Rate adaptation is carried out at least two-way 64B/66B data code block；

16. transmission device described in any one of 0 to 15 according to claim 1, which is characterized in that described in the processor executes When computer instruction, so that the transmission device specifically executes:

17. transmission device described in any one of 0 to 16 according to claim 1, which is characterized in that described in the processor executes When computer instruction, so that the transmission device specifically executes:

18. transmission device described in any one of 0 to 17 according to claim 1, which is characterized in that described in the processor executes When computer instruction, so that the transmission device specifically executes:

19. a kind of data transmission method characterized by comprising

Receive FlexO stream of codeblocks；

According to the FlexO expense of FlexO frame in the FlexO stream of codeblocks, from the FlexO frame of the FlexO stream of codeblocks At least one 64B/66B stream of codeblocks is parsed in time slot, the rate of each 64B/66B stream of codeblocks is the positive integer times of 5G.

20. data transmission method according to claim 19, which is characterized in that the FlexO expense includes time slot allocation Information, the time slot allocation information be used to indicate at least one described 64B/66B stream of codeblocks be mapped to the FlexO frame when The position of gap.

21. data transmission method described in 9 or 20 according to claim 1, which is characterized in that the time slot of the FlexO frame Size be 5G.

22. data transmission method described in any one of 9 to 21 according to claim 1, which is characterized in that the transmission side data Method further include:

According at least one described 64B/66B stream of codeblocks, original service data are recovered.

23. a kind of transmission device, which is characterized in that including processor and memory, be stored with computer in the memory and refer to It enables, when the processor executes the computer instruction, so that the transmission device executes following steps:

Receive FlexO stream of codeblocks；

24. transmission device according to claim 23, which is characterized in that the FlexO expense includes time slot allocation information, The time slot allocation information is used to indicate the time slot that described at least one 64B/66B stream of codeblocks is mapped to the FlexO frame Position.

25. the transmission device according to claim 23 or 24, which is characterized in that the time slot of the FlexO frame it is big Small is 5G.

26. the transmission device according to any one of claim 23 to 25, which is characterized in that the computer instruction is held When row, further such that the transmission device executes following steps:

27. a kind of Transmission system characterized by comprising transmission device described in any one of claim 10 to 18 and power Benefit require any one of 23 to 26 described in transmission device.