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A method and terminal for adjusting the amount of harq cache

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

Active Publication Date: 2016-09-28
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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  • A method and terminal for adjusting the amount of harq cache
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  • A method and terminal for adjusting the amount of harq cache

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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 present invention provides a method and a terminal for adjusting the HARQ buffer amount of a hybrid automatic repeat request, relating to the field of communication technology, by reducing the rated HARQ buffer amount of a coding block according to a rated ratio, and then judging whether the reduced HARQ buffer amount satisfies If the preset threshold range is satisfied, only part of the coded information will be stored, so that the decoding performance of the reduced coded information will not be greatly reduced by setting the rated ratio, and then the threshold range is set to limit under what conditions The HARQ buffer size can be reduced, so that the technical solution provided by the embodiment of the present invention can reduce the use of the HARQ buffer size while ensuring the decoding performance. The invention is mainly applied in the process of turbo codec and related information transmission.

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, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04W28/14
CPCH04L1/1819H04L1/1835
Inventor 张福强
Owner HONOR DEVICE CO LTD
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