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Method and device for detecting signal

A signal detection and feedback signal technology, applied in the field of communication, can solve the problems of large amount of calculation and high complexity of hardware implementation, and achieve the effects of improving efficiency, easy implementation, and reducing memory usage

Inactive Publication Date: 2007-06-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If all these hundreds of combinations are listed and then judged, there will be a large amount of calculation, and the complexity of hardware implementation is very high

Method used

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  • Method and device for detecting signal
  • Method and device for detecting signal
  • Method and device for detecting signal

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Embodiment Construction

[0034] In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention are described in conjunction with the accompanying drawings.

[0035] For the data sent by the sender, the receiver will respectively feed back ACK or NACK signals to the sender according to whether it is received correctly; if no data is received, it will feed back a DTX signal to the sender (equivalent to sending nothing). If multiple signals (ACK, NACK, PRE, POST or DTX) may be sent at the same position, one of the signals will be selected for transmission according to the following priority: ACK=NACK>PRE>POST>DTX, that is The priority of ACK is the same as that of NACK, the priority of ACK and NACK is higher than that of prefix, and the priority of prefix is ​​higher than that of no response. The number of PRE and POST sent in the feedback signal is related to the number of repetitions N_acknack_transmit of ACK / NACK. When...

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Abstract

The invention is concerned with the signal detection method, including: the feedback signal parallel passes each feedback signal correlator; gets the feedback signal combination according to the output of each feedback signal correlator by gridding chart, the gridding chart is all feedback signal combination. The invention is also concerned with the signal detection equipment, it is: gets the feedback signal combination according to the gridding chart and the feedback signal correlator output by the known feedback signal forms rules and gridding table, because the gridding table is the combination of all feedback signal and without impossible feedback signal, reduces the occupied storage quantity when detecting feedback, improves the effect of the detection feedback signal.

Description

technical field [0001] The present invention relates to a communication technology, in particular to a signal detection method and device. Background technique [0002] In the WCDMA (Wideband Code Division Multiple Access) system, the use of HARQ (Hybrid Automatic Repeat Request) technology can effectively improve the throughput of packet data, that is, for the data sent by the sender, the receiver will, according to the receiving situation, Feedback ACK (acknowledgement response), NACK (non-acknowledgement response) or DTX (no response) signal to the sender respectively. Among them, ACK indicates that the data is received correctly; NACK indicates that the data is received incorrectly; DTX indicates that the data has not been received. The sender determines whether to retransmit by detecting the feedback signal from the receiver. [0003] In order for the sender to distinguish ACK, NACK and DTX signals, the receiver needs a larger transmit power to transmit feedback signa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/00
Inventor 王思翀黄心晔
Owner HUAWEI TECH CO LTD