Method and apparatus for data mixing and automatic requesting for retransmission

A hybrid automatic and retransmission device technology, which is applied in the direction of error prevention/detection using the return channel, can solve the problems of insufficient use of air interface wireless resources, useless transmission of underlying data, and inability to reuse wrong data, etc.
CN101155014AInactive Publication Date: 2008-04-02HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2008-04-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a method of hybrid automatic repeat request and the device, which includes the steps of: differentiating the wrong data by the receiving end when the receiving end receives the data; identifying the wrong data and presenting to the regrouping buffer area when the hybrid automatic repeat request has reached a maximum repeat number; processing the wrong data and presenting to the high layer by the receiving end at the regrouping buffer area according to the data identification and the transferring sequence number. The invention increases the error presenting faculty of the base layer when the hybrid automatic repeat has reached the maximum repeat number, at the same time further takes measure to avoid the effect caused by the error of the grouping data head thereby obtaining the advantages of providing the useful information to the high layer as much as possible, avoiding the useless transmission of the base layer data and meanwhile increasing the satisfaction of the user.
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Description

technical field

[0001] The invention relates to a communication data transmission technology, in particular to a method and device for automatically requesting retransmission of data mixing in communication. Background technique

[0002] In wireless communication, because the transmitted signal has to go through a complex propagation environment and is affected by path loss, shadow fading and small-scale fading, the transmission quality of the signal is lower than that of the wired network environment, and the reliability of the data is poor. In view of the unstable characteristics of the wireless channel, the bottom layer adopts many technologies to make up for this, including hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat request), adaptive modulation and coding (AMC, Adaptive Modulation and Coding) and other technologies.

[0003] HARQ is the technology used in the bottom layer, which is a combination of forward error correction coding and automatic reques...

Claims

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