Information processing method and device, communication equipment and communication system

An information processing method and communication system technology, which is applied in the field of communication systems and information processing, and can solve problems such as poor HARQ performance

Active Publication Date: 2018-08-14
HUAWEI TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0006] In the prior art, when the communication equipment at the sending end adopts the existing rate matching method, the HARQ performance is poor

Method used

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  • Information processing method and device, communication equipment and communication system
  • Information processing method and device, communication equipment and communication system
  • Information processing method and device, communication equipment and communication system

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Embodiment Construction

[0074] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention.

[0075] figure 1 A schematic diagram of the base matrix and permutation matrix of an LDPC code in a communication system is shown. The base matrix of the LDPC code has m*n elements. If z is used as the expansion factor to expand, the check matrix H can be obtained as a matrix of (m*z)*(n*z), that is, there are m*n The block matrix is ​​composed, and each block is a z*z identity matrix obtained by cyclic shift. The expansion factor z is generally determined according to the code block size supported by the system and the size of the information data. Such as figure 1 Shown is a base matrix of an LDPC code with a QC structure with m=13 and n=38, and its code rate is (n-m) / n=0.6579. If the expansion factor z=4, all elements in the matrix whose value is -1 are expanded into a 4*4 all-zero matrix, and othe...

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Abstract

The application discloses an information processing method and device, communication equipment and a communication system. The communication equipment is used for acquiring the starting position of anoutput bit sequence in an encoding block of cyclic buffer, and determining an output bit sequence from the encoding block based on the length of the output bit sequence and the starting position, wherein the value of the starting position is one of {P<0>, P<1>, P<2>..., P<k<max>-1>}, P<k> is greater than or equal to 0 and smaller than N<CB>, P<k> is an integer, K is an integer, K is greater thanor equal to 0 and smaller than k<max>, N<CB> is the size of the encoding block, and k<max> is an integer being greater than or equal to 4. Through reasonable determination of a bit sequence of initialtransmission or retransmission, the decoding performance of receiving-end communication equipment after reception of the bit sequence is improved; the decoding success rate is increased; and the number of retransmission is further reduced.

Description

Technical field [0001] The embodiments of the present invention relate to the field of communications, and in particular to methods, devices, communication equipment, and communication systems for information processing. Background technique [0002] In a wireless communication system, Hybrid Automatic Repeat Request (HARQ) technology is an important technology that can improve the reliability of data links. [0003] Low density parity check (LDPC) codes are a type of linear block coding with sparse check matrix, which has the characteristics of flexible structure and low decoding complexity. Because it uses a partially parallel iterative decoding algorithm, it has a higher throughput rate than the traditional Turbo code. LDPC code is considered as the next generation error correction code of communication system, which can be used to improve the reliability and power utilization of channel transmission; and can be widely used in space communication, optical fiber communication, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/0058H04L1/004H04L1/0067H04L1/1816H04L1/18H03M13/116H03M13/1188H03M13/6306H03M13/6393H03M13/11H03M13/616H04L1/0013H03M13/635
Inventor 马亮曾歆魏岳军卡梅拉·卡佐
Owner HUAWEI TECH CO LTD
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