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A data retransfer method of multi-input and multi-output system and data transmission terminal device

A sending end, multi-output technology, applied in diversity/multi-antenna systems, communication between multiple stations, transmission control/equalization, etc., can solve the problems of low data transmission rate, poor real-time data retransmission, etc., to achieve Increase data volume, improve overall performance, and reduce latency

Active Publication Date: 2011-05-18
HUAWEI TECH CO LTD
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Problems solved by technology

[0014] The present invention provides a data retransmission method of a multiple-input multiple-output system, which is used to solve the problems of poor real-time data retransmission and low data transmission rate in MIMO systems in the prior art

Method used

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  • A data retransfer method of multi-input and multi-output system and data transmission terminal device
  • A data retransfer method of multi-input and multi-output system and data transmission terminal device
  • A data retransfer method of multi-input and multi-output system and data transmission terminal device

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Embodiment Construction

[0041] The present invention provides a data retransmission method for a MIMO system, the principle of which is: after the transmitting end knows that the receiving end has not correctly decoded the data signal, it resends the increment of the incorrectly decoded data on the transport layer that transmits the incorrectly decoded data. Amount of redundant information, and send new data on the transport layer that transmits successfully decoded data. At the same time, before sending data, it can redistribute power for each data transmission layer to achieve the best data transmission efficiency.

[0042] see Figure 4 , is a schematic diagram of the data retransmission process of the MIMO system of the present invention, and the specific steps include:

[0043] S10. The sending end sends the data subflow to the receiving end through each data transmission layer.

[0044] Assuming that the sending end sends M data sub-streams to the receiving end (the number of data sub-streams ...

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Abstract

The invention discloses a multi-input-multi-output system data re-transmitting method and a data transmitting end equipment. The method comprises the steps that a transmitting end gains the feedback incorrect decoding data news from a receiving end; then, the transmitting end re-transmits the incorrect decoding data redundant information at a transmission layer and transmits the new data at the successful decoding data transmission layer. The invention is capable of enhancing the data transmission efficiency and system capacity.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a data retransmission method and a data sending end device of a multiple-input multiple-output system. Background technique [0002] Data communication was originally developed on the wired network, which usually requires larger bandwidth and higher transmission quality. For wired-connected systems, data transmission reliability is achieved through retransmissions. When the previous transmission attempt fails, the data packet needs to be retransmitted, and such a transmission mechanism is called Automatic Repeat ReQuest (ARQ). In the wireless transmission environment, factors such as channel noise, fading due to mobility, and interference from other users make channel transmission quality very poor, so data packets should be protected to suppress various interferences. This protection is mainly realized by using forward error correction coding (Forward Error Correction, FE...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04L1/18H04L1/16H04B7/005H04B7/26
Inventor 童剑飞汪璇高全中
Owner HUAWEI TECH CO LTD
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