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Method and device for realizing hybrid automatic repeat request

A technology of hybrid automatic retransmission and implementation method, which is applied in the field of communication, can solve the problems of large delay and inability to flexibly support multiple LLRbit bit widths to read and write HARQ buffers, and achieve the effect of reducing delay and improving system throughput

Active Publication Date: 2018-08-03
LEADCORE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] but, figure 2 The timing diagram of each module in the image 3 As shown, it can be seen that the next code block must be processed only after the current code block is completely processed, and the processing delay is relatively large
[0007] In addition, the existing HARQ implementation scheme cannot flexibly support multiple LLR bit widths to read and write HARQ buffers

Method used

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  • Method and device for realizing hybrid automatic repeat request
  • Method and device for realizing hybrid automatic repeat request
  • Method and device for realizing hybrid automatic repeat request

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0047] The first embodiment of the present invention relates to a method for implementing a hybrid automatic repeat request, the specific process is as follows Figure 4 shown.

[0048] In step 401, the first decompression buffer and the second decompression buffer perform pipeline processing on the data read from the HARQ ...

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Abstract

The invention relates to a communication technology and discloses a method and a device for implementing a hybrid automatic repeat request. The method for implementing the hybrid automatic repeat request comprises the following steps that a first decompression buffer and a second decompression buffer respectively output data read from a hybrid automatic repeat request HARQ buffer to a log likelihood ratio LLR combiner after pipeline processing; and a de-rate matcher De-RM outputs current transmission data read by a digital signal processor DSP to the LLR combiner after de-rate matching; and the LLR combiner carries out retransmission combination on data from the first decompression buffer, the second decompression buffer and the De-RM. According to the method and the device, the time for reading cache data of the HARQ buffer is guaranteed to be basically parallel to the LLR combination processing time, the time delay for processing the hybrid automatic repeat request can be reduced, and the system throughput rate is improved.

Description

technical field [0001] The invention relates to communication technology, in particular to hybrid automatic repeat request technology. Background technique [0002] HARQ (Hybrid Automatic Repeat Request, hybrid automatic repeat request) is a key technology in the LTE system, by combining ARQ (Automatic Repeat-reQuest, automatic repeat request) and FEC (ForwardError Correction, forward error correction) technology, Enhance the transmission capacity of the system. In the LTE system, HARQ is used as the link error control technology to ensure the quality of service requirements. [0003] 3GPP (The 3rd Generation Partnership Project, 3rd Generation Partnership Project) The process of sub-block interleaving, bit collection, selection, and transmission of Turbo coded output in LTE, such as figure 1 As shown, the specific process will not be described in detail here. [0004] Currently, processing from figure 1 The HARQ implementation means of the received data such as figure...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
CPCH04L1/1812H04L1/1835
Inventor 王卫兵
Owner LEADCORE TECH