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Retransmission method in communication system

A communication system and technology for retransmitting data, applied in the field of communication, can solve the problem of loss of retransmission and combine diversity gain, and achieve the effect of avoiding data reception errors and not losing diversity gain

Inactive Publication Date: 2012-03-14
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can also avoid the above problems, but the disadvantage is that the diversity gain of retransmission combining will be lost

Method used

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Embodiment Construction

[0022] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The basic idea of ​​the present invention is: after receiving the retransmission data sent by the sending end, the receiving end merges the data received this time with the data received before, and further decodes the data received this time separately, so as to avoid Decoding of retransmitted data fails due to false detection of NACK as ACK.

[0024] Next, the specific implementation of the present invention will be described through specific embodiments.

[0025] figure 1 It is a schematic flow chart of the retransmission method in the present invention. like figure 1 As shown, the method includes:

[0026] Step 101, after the receiving end receives the data, if the data is received incorrectly, go to step 102, otherwise go to step 113.

[0027] Step ...

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Abstract

The invention provides a retransmission method in a communication system. The method comprises the following steps that: after a receiving terminal receives retransmission data sent by a sending terminal, combination processing is carried out on the received data at this time and previous received data; independent decoding is carried out on the received data at this time; if the independent decoding is successful or a receiving result of the combination processing is correct, ACK information is feedbacked to the sending terminal; and if the independent decoding is failed and the receiving result of the combination processing is incorrect, NACK information is feedbacked to the sending terminal. According to the invention, inconsistence of data of receiving and sending terminals during an HARQ process can be avoided; and a diversity gain will not be lost.

Description

technical field [0001] The invention relates to communication technology, in particular to a retransmission method in a communication system. Background technique [0002] In mobile communication, with the continuous expansion of communication services and the improvement of service quality, higher requirements are put forward for the reliability of communication. In the mobile communication system, the wireless channel is a variable parameter channel, and its environment is also very complicated. For the signal at the receiving end, the bit errors caused by fading and various interferences include random errors and burst errors, which will seriously damage the communication quality. Therefore, in the mobile communication system, error control technology must be used to improve the transmission quality of the signal, so as to ensure the reliable transmission of information. The error control technology widely used at present is HARQ technology. [0003] HARQ technology is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W28/04
Inventor 于小红莫勇冯绍鹏梁毅张际
Owner POTEVIO INFORMATION TECH
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