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Common public radio interface service transmitting/receiving method and device

A public wireless interface and service transmission technology, applied in the field of communication, can solve the problems of large crosstalk, large waste of resources, high turnover density, etc., to achieve the effect of ensuring correctness, ensuring compatibility, and saving transmission buffer

Active Publication Date: 2013-11-06
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of realizing the embodiment of the present invention, the inventor found that the existing 8B / 10B encoding method cannot meet the application requirements of the CPRI next-generation standard (rate greater than or equal to 9.8304Gbps), which is mainly reflected in the following points:
[0005] 1. When 8B / 10B encoding is applied to a 10Gbps transmission system, because the encoding itself has too high a flip density, the encoding crosstalk is very large, which is not conducive to system transmission;
[0006] 2. The efficiency of 8B / 10B coding is low, and the resource waste is large, which cannot meet the high-speed evolution requirements of CPRI

Method used

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  • Common public radio interface service transmitting/receiving method and device
  • Common public radio interface service transmitting/receiving method and device
  • Common public radio interface service transmitting/receiving method and device

Examples

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example 1

[0115] Example 1: The state machine includes the following states: codeword unsynchronized (LOSS of Sync) state, codeword character detection (Comma Detect) state, codeword synchronization (Synchronized) state, codeword synchronization error (Synchronized error) state, It mainly includes the following processes:

[0116] In the code word unsynchronized state, find a predetermined bit stream pattern from the received service code stream by windowing, such as the above-mentioned super frame header or 6B code word encoded by 5B / 6B, and enter the code word character detection state;

[0117] In the codeword character detection state, continue to detect the subsequent data of the bit stream pattern, if the subsequent data of the bit stream pattern is a legal code and is the predetermined bit stream pattern, and its number reaches the first Predetermined value, then enter codeword synchronous state; If the subsequent data of described bit stream pattern is an illegal code, then get ...

example 2

[0130] Example 2: the state machine includes the following states: codeword unsynchronized state, codeword character detection state, codeword synchronization state, mainly including the following processes:

[0131] When the code word is not synchronized, find a predetermined bit stream pattern from the received service code stream by windowing, such as K28.5, or both [16:11] and [33:28] conform to 5B / 6B encoding Code table, enter the character detection state;

[0132] In the codeword character detection state, continue to detect the subsequent data of the bit stream pattern, if it is continuously detected that the subsequent data of the bit stream pattern is a legal code, and the number of the predetermined bit stream patterns reaches the first Four predetermined values ​​such as 64, then enter the code word synchronization state; if the subsequent data of the bit stream pattern is an illegal code, then get back to the code word unsynchronized state; the legal code represen...

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Abstract

A method and an apparatus for sending / receiving Common Public Radio Interface (CPRI) service are provided by the present invention. The sending method includes: adding a check bit into a service flow code-block to obtain a check code-block, and forming a check frame with multiple check code-blocks, wherein the check bit added into the service flow code-blocks of the current check-frame is the check-bit of the service flow code-blocks of the previous check frame (201); forming a hyperframe with multiple check frames, and identifying the frame header of the hyperframe (202); sending the identified hyperframe (203). According to the present invention, high efficient line coding mechanism can be adopted in CPRI interface service transmission, and corresponding check protection mechanism and hyperframe synchronization mechanism are provided, and therefore the application requirement on transmission rate of the CPRI next generation can be met.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for sending and receiving services of a general public radio interface. Background technique [0002] The CPRI (Common Public Radio Interface, Common Public Radio Interface) specification mainly defines the protocol interface between the wireless base station and the base station controller, and is used for communication between the base station and the base station controller. [0003] The line encoding format of CPRI's existing standard (rate less than or equal to 6.144Gbps) protocol is 8B / 10B, that is, the encoding method of mapping 8-bit codewords to 10-bit codewords. The encoding process is as follows: figure 1 Shown: The data code stream is presented at the input port of the encoder with 8 bits, and the 8-bit data is logically divided into two parts: the first 5 bits and the last 3 bits. The initial 5-bit data is input to the 5B functional module...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W92/12
CPCH04W92/00H04L25/4908H04W28/065H04L1/0056H04W28/04
Inventor 蒋亚军包盛花黄春行董晓青
Owner HONOR DEVICE CO LTD
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