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Client signal mapping method and device, and client signal demapping method and device

A client signal and implementation method technology, applied in the field of communication, can solve the problems of complex mapping processing and high mapping processing complexity, and achieve the effect of reducing complexity

Active Publication Date: 2016-11-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under high-speed services, the existing mapping processing method is used to map the client signal to the OPUk payload area, and the mapping processing complexity is high
For example, in the existing mapping method based on the Generic Framing Procedure (GMP, Generic Framing Procedure), when the client signal is mapped to OPU0, if the processing bit width is 16*8 bits, each clock cycle needs to perform 16 sigma-delta In order to complete the client signal mapping of this clock cycle, the mapping process is more complicated

Method used

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  • Client signal mapping method and device, and client signal demapping method and device
  • Client signal mapping method and device, and client signal demapping method and device
  • Client signal mapping method and device, and client signal demapping method and device

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Experimental program
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Embodiment 1

[0028] see figure 2 , is a flowchart of a method for implementing client signal mapping provided in Embodiment 1 of the present invention, and may specifically include:

[0029] Step 210, divide part or all of the payload area of ​​the optical channel payload unit or optical channel data branch unit into several sub-blocks, the size of the sub-blocks is N bytes, and N is greater than or equal to 1;

[0030] Step 230: Map the client signal to be transmitted into sub-blocks in the payload area at the granularity of N bytes.

[0031] It can be seen that in this embodiment, when the client signal is mapped, the block mapping of the client signal is performed with the block as the mapping granularity, which relatively reduces the complexity of the client signal mapping process and can adapt to the requirements of various rate services.

Embodiment 2

[0033] see first image 3 , is a schematic structural diagram of an OPUk payload area and an OPUk overhead area provided in Embodiment 2 of the present invention. In this implementation, the OPUk payload area is logically divided into M sub-blocks, and the size of each sub-block is N bytes. The size of the entire OPUk payload area is M*N bytes.

[0034] It can be understood that the size of the logically divided sub-blocks of the OPUk payload area can be arbitrary, that is, N can be any value that can be divisible by the number of bytes in the OPUk payload area.

[0035] Preferably, the OPUk payload area can be logically divided into sub-blocks according to the processing bit width of the processor, and the size of the logically divided sub-blocks is a submultiple of the processing bit width of the processor. For example, assuming that the processing bit width of the processor is 16*8=128 bits, the size of the logically divided sub-blocks can be 16 bytes, 8 bytes, 4 bytes, 2 ...

Embodiment 3

[0089] see first Figure 7 , is a schematic structural diagram of an OPUk payload area and an OPUk overhead area provided by Embodiment 3 of the present invention. In this implementation, the OPUk payload area is divided into: a block area and an adjustment area, wherein the block area is logically divided into M sub-areas block, the size of each sub-block is N bytes, and the size of the entire block area is M*N bytes.

[0090] It can be understood that the size of the sub-blocks logically divided by the OPUk block area can be arbitrary, that is, N can be any value that can be divisible by the number of bytes in the OPUk block area.

[0091] Preferably, the OPUk block area can be logically divided into blocks according to the processing bit width of the processor, and the size of the logically divided sub-blocks is a submultiple of the processing bit width of the processor. For example, assuming that the processing bit width of the processor is 16*8=128 bits, the logically di...

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PUM

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Abstract

The embodiment of the invention discloses a client signal mapping method and device, and a client signal demapping method and device. The mapping method comprises the steps of dividing one part or all area of a payload area of an optical channel payload unit or an optical channel data branch unit into a plurality of sub-blocks, wherein the size of each sub-block comprises N bytes, and the N is greater than or equal to 1; and mapping to-be-transmitted client signals to the sub-blocks of the payload area by taking the N bytes as a particle size. According to the technical of the embodiment of the method and the device, when the client signals are mapped, each block is taken as the mapping particle size, and the block mapping of the client signals is carried out. The mapping complexity of the client signals is reduced relatively, and the method and the device are applicable to demands of service of various rates.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for implementing client signal mapping and demapping. Background technique [0002] The OTN (Optical Transport Network, Optical Transport Network) technology is generally considered to be the core technology of the next generation transport network. OTN has powerful TCM (Tandem Connection Monitoring, serial monitoring) capability, rich OAM (Operation Administration Maintenance, operation, management, maintenance) capability, and out-of-band FEC (Forward Error Correction, forward error correction) capability, which can realize large The flexible scheduling and management of capacity services can be applied to the backbone transport network. [0003] In order to meet the market demand, the International Telecommunication Union Communication Standards Department (ITU-T) has formulated a series of proposals on OTN, among which the G.709 proposal is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/16H04L5/00H04L47/43
CPCH04B10/00H04J3/1658H04J2203/0089H04L5/0046H04J3/1652Y10S370/907H04B10/27
Inventor 吴秋游沈瑶
Owner HUAWEI TECH CO LTD