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Data retransmission method and data retransmission device for rearrangement by interlacing rule in communication system

A data retransmission and data retransmission technology, which is applied in transmission systems, digital transmission systems, forward error control, etc., can solve problems such as complex implementation schemes, achieve reasonable cost and improve performance

Active Publication Date: 2012-11-07
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] figure 1 It shows the system block diagram of the transmitting end equipment in the above-mentioned prior art. The above-mentioned prior art can improve the performance of the HARQ technology, but there are also disadvantages such as complex implementation schemes

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  • Data retransmission method and data retransmission device for rearrangement by interlacing rule in communication system
  • Data retransmission method and data retransmission device for rearrangement by interlacing rule in communication system
  • Data retransmission method and data retransmission device for rearrangement by interlacing rule in communication system

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Embodiment Construction

[0028] In order to better understand the present invention, the following will be further described in conjunction with specific examples of the present invention, but they do not limit the present invention.

[0029] Based on the prior art, in the communication system, the sending device divides the channel-coded data into blocks, and each data block is sent to the receiving device after interleaving and other processing. The most commonly used interleaving method is matrix interleaving, that is, the codeword sequence (data block) after channel coding is filled row by row into a matrix with a size of m×n, and after the matrix is ​​filled, it is read out column by column. Similarly, the deinterleaver of the receiving device fills the received signal into an m×n matrix column by column, reads out row by row after filling, and then sends it to the decoder for decoding. In this way, the continuous burst errors in the channel are separated into multiple isolated errors by the dein...

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Abstract

The invention provides an improved HARQ scheme with low complexity. A data block with wrong receiving demodulation is interlaced by different interlacing rules in each retransmission and maintains same sign modulation processing according to the technical scheme of the invention. The data block with the wrong receiving demodulation is interlaced by different interlacing rules in each retransmission and maintains the same sign modulation processing and subcarrier mapping processing according to a preferable implementing scheme of the invention so that the data block can obtain the same effect with the rearrangement diversity and the frequency diversity of a constellation diagram when the data block is received and combined, thereby improving the performance of an HARQ technology. Compared with other improved HARQ technologies, the preferable implementing scheme has simpler hardware.

Description

technical field [0001] The invention relates to hybrid automatic retransmission request (HARQ) technology, in particular to a data retransmission method and device thereof using interleaving rule rearrangement in a communication system. Background technique [0002] The error control technology is used in the communication system to improve the transmission quality of the signal and ensure the reliability of the information. Traditional error control techniques include forward error correction (FEC) and error detection plus automatic repeat request (ARQ). FEC technology performs error correction based on redundant information in received data, and is characterized by "only error correction, no retransmission". ARQ technology relies on error code detection and retransmission requests to ensure signal quality, and is characterized by "retransmission only, no error correction". [0003] In today's communication systems capable of transmitting high-speed data services, hybrid ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L29/06
CPCH04L1/0071H04L1/1812
Inventor 徐朝军韩锋郑武沈钢
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD