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Method and apparatus for carrying signal frame by using FlexE, and method and apparatus for recovering FlexE signal frame

A signal frame and data frame technology, applied in the field of communication, can solve the problems of high added overhead and low efficiency, and achieve the effect of low processing level and low delay.

Active Publication Date: 2018-10-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method for carrying signal frames using FlexE, a method and a device for restoring signal frames, to solve the problems that the existing CPRI frame transmission method on Ethernet needs to add more overhead and the efficiency is relatively low

Method used

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  • Method and apparatus for carrying signal frame by using FlexE, and method and apparatus for recovering FlexE signal frame
  • Method and apparatus for carrying signal frame by using FlexE, and method and apparatus for recovering FlexE signal frame
  • Method and apparatus for carrying signal frame by using FlexE, and method and apparatus for recovering FlexE signal frame

Examples

Experimental program
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no. 1 example

[0050] This embodiment provides a method of using FlexE to carry signal frames, figure 1 is the flowchart of the method, such as figure 1 As shown, the method includes the following processing:

[0051] Step 101: Extract control code and data code from the signal frame;

[0052] Step 102: Perform encoding conversion on the control code according to the regulations of the Elastic Ethernet FlexE, insert custom overhead into the control block obtained after the encoding conversion, obtain the control block, and perform rate adaptation on the control block;

[0053] In this embodiment, the rate adaptation may specifically include: according to the total rate of the time slot to be placed in the FlexE signal frame, calculating the difference with the rate of the CPRI basic frame rate option after 64 / 66 encoding, and according to the difference Calculate the target number of idle control blocks to be inserted, and insert the target number of idle control blocks between the end con...

no. 2 example

[0065] This embodiment provides a method for restoring a signal frame, figure 2 is the flowchart of the method, such as figure 2 As shown, the method includes the following steps:

[0066] Step 201: receiving the data block and the control block of the FlexE signal frame;

[0067] Step 202: When the control block is received, extract the custom overhead carried in the control block and perform code conversion on the control block according to the regulations of CPRI or GE;

[0068]Step 203: When the data block is received, code conversion is performed on the data block according to the stipulations of CPRI or GE.

[0069] In a specific example, the FlexE frame is converted from a CPRI frame. Based on this, when the control block is received, the custom overhead carried in the control block is extracted and the control block is encoded and converted according to the CPRI regulations. When the data is received block, the data block is coded and converted according to the CP...

no. 3 example

[0073] This embodiment uses the process of using FlexE to carry CPRI signals as an example to illustrate the method provided by the present invention. The process may specifically include the following steps:

[0074] Step 1, extracting CPRI frames.

[0075] Extract the control code and data code from the CPRI frame, and obtain the rate information, alarm information, data checksum and other information of the CPRI frame.

[0076] For CPRI options 1 to 7, the code is converted from 10B to 8B data code and control code; for CPRI options 8 to 10, the information of the control block and data block is obtained directly according to the type of the 2-bit Sync header of the 66B block.

[0077] Step 2, converting control codes, inserting overhead and performing rate adaptation.

[0078] The 8B control code (K28.5) of CPRI options 1 to 7 (that is, the first seven options of the CPRI line rate option) is converted into a / T / end control block, and a / S / start control block, and in th...

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Abstract

The invention provides a method for carrying a client signal by using FlexE and a method and device for recovering a client signal, and aims at solving the problems that a present manner in transmitting a CPRI frame in the Ethernet needs relatively high cost and is relatively low in efficiency. The method for carrying the signal frame by using the FlexE comprises extracting a control code and a data code from a signal frame; performing code conversion on the control code according to a rule of a Flex Ethernet (FlexE), inserting customized cost into a control block obtained after the code conversion, and performing rate adaptation on the control block into which the custom overheads have been inserted; performing code conversion on the data code according to a rule of the FlexE, so as to obtain a data block; and by using the FlexE, carrying the control block on which the rate adaptation has been performed as well as the data block. Thus, the cost in transmitting the CPRI frame in the Ethernet is reduced and the efficiency is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for using FlexE (Flex Ethernet, flexible Ethernet) to carry signal frames, and a method and device for restoring the FlexE signal frames. Background technique [0002] The Common Public Radio Interface (CPRI for short) is an industrial cooperation organization initiated by Ericsson, Huawei, NEC, Nortel Networks and Siemens. The internal main interface specification protocol. The CPRI protocol defines a variety of line rate options, as shown in Table 1 below: [0003] Table 1 [0004] [0005] Among them, the line coding used by the physical layer (Layer 1) of CPRI options 1 to 7 is 8B / 10B line coding that meets the requirements of IEEE 802.3-2005[1], clause 36; and the physical layer (Layer 1) of options 8 to 10 The line coding used is 64B / 66B line coding that complies with IEEE 802.3-2008[22], clause 49 requirements. The above CPRI options all belong to CBR (Con...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0006H04L1/0009H04L1/0013
Inventor 罗利人
Owner ZTE CORP