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Method and terminal for adjusting HARQ buffer memory amounts

A buffering capacity and terminal technology, applied in the communication field, can solve the problems of reducing retransmission HARQ combining gain, reducing decoding performance, increasing terminal cost, etc.

Active Publication Date: 2013-11-27
HONOR DEVICE CO LTD
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Problems solved by technology

[0005] When the bit soft value discarding scheme suitable for terminal level 4 is directly applied to terminals higher than level 4, due to too many discarded bit soft values, in the case of a large number of HARQ retransmissions, the retransmission HARQ combination is reduced Gain, thereby reducing the decoding performance, which leads to the incorrect transmission of information; and if the protocol is maintained, that is, no soft value of any bit is discarded, the terminal is required to set a sufficiently large buffer, which increases the cost of the terminal

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  • Method and terminal for adjusting HARQ buffer memory amounts
  • Method and terminal for adjusting HARQ buffer memory amounts

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Embodiment Construction

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0079] figure 1 A method for adjusting the HARQ buffer size provided by the embodiment of the present invention is described. The method is executed by the terminal, and can be applied to the information transmission process based on turbo coding between the base station and the terminal under the LTE system architecture. This embodiment include:

[0080] 101. The receiving base station sends coding information corresponding to one coding block.

[0081] A CB is ...

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Abstract

The invention provides a method and terminal for adjusting HARQ buffer memory amounts, and relates to the technical field of communication. The method comprises the steps of reducing the rated HARQ buffer memory amounts of code blocks according to the rated proportions, then judging whether the HARQ buffer memory amounts after reduction are within a preset threshold range or not, if the HARQ buffer memory amounts after reduction are within the preset threshold range, only saving a part of encoding information, setting the rated proportions to guarantee that the encoding performance of the encoding information after reduction can not be greatly reduced, and then setting the threshold range to limit the condition for reducing the HARQ buffer memory amounts. By means of the technical scheme, under the condition that the encoding performance is ensured, the HARQ buffer memory amounts can be reduced in use. The method and terminal for adjusting the HARQ buffer memory amounts are mainly applied to the processes of turbo encoding and decoding and transmission of related information.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for adjusting a buffer size and a terminal. Background technique [0002] Long Term Evolution (LTE, Long Term Evolved) uses Adaptive Modulation and Coding (AMC, Adaptive Modulation and Coding) and Hybrid Automatic Repeat Request (HARQ, Hybrid Automatic Repeat Request) technologies to perform wireless link quality adaptation and retransmission Error correction. The HARQ technology in LTE adopts incremental redundancy (IR, Incremental Redundancy) HARQ, that is to say, the evolved base station (eNodeB, Evolved Node B) only sends information bits and some redundant bits during the first transmission, In the subsequent retransmission process, additional redundant bits are sent. In this way, if the terminal fails to decode the information received for the first time, it can ask the eNodeB to retransmit more redundant bits to reduce the channel coding rate, t...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04W28/14
CPCH04L1/1819H04L1/1835
Inventor 张福强
Owner HONOR DEVICE CO LTD
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