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Data retransmission method and device for unbalanced antenna gain

A technology of antenna gain and data retransmission, which is applied in the field of data retransmission, can solve problems such as unbalanced antenna gain, reduction of radiation power, and impact on receiver performance, so as to achieve the effect of improving and ensuring the success rate

Inactive Publication Date: 2017-05-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a multi-antenna system, the antenna gain imbalance (AGI, Antenna GainImbalance) will reduce the radiation power and affect the performance of the receiver. Therefore, it is necessary to study its performance impact and change the transmission strategy and retransmission strategy to optimize the performance when AGI exists.

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  • Data retransmission method and device for unbalanced antenna gain
  • Data retransmission method and device for unbalanced antenna gain
  • Data retransmission method and device for unbalanced antenna gain

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Embodiment Construction

[0041] The basic idea of ​​the present invention is: when the network side determines that the multi-antenna gains of the sending terminal are unbalanced, when the data streams transmitted by the multi-antennas adopt the same modulation and coding method, use a better spatial sub-channel in the multi-antenna to retransmit the data ; When the data streams transmitted by the multiple antennas adopt different modulation and coding modes, retransmit the data using better spatial sub-channels in the multiple antennas and / or retransmit the data in a single data stream mode.

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0043] Studying the layer mapping and precoding of the Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel) in the existing Long Term Evolution-Advanced ...

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Abstract

The invention discloses a data retransmission method and device for unbalanced antenna gain, wherein the method includes: when determining the unbalanced multi-antenna gain of the sending end, the data streams transmitted by the multi-antenna adopt the same modulation and coding mode, use better spatial sub-channels in the multi-antennas to retransmit data; when the data streams transmitted by the multi-antennas use different modulation and coding methods, use better spatial sub-channels in the multi-antennas The channel retransmits data and / or retransmits data using a single stream. The present invention selects a corresponding retransmission mode according to the spatial sub-channel conditions of the erroneous data flow, thereby improving the success rate of data flow retransmission and ensuring the success rate of data flow retransmission.

Description

technical field [0001] The invention relates to a data retransmission technology, in particular to a data retransmission method and device with unbalanced antenna gain. Background technique [0002] Multiple-Input Multiple-Output (MIMO, Multi-Input Mult-Output) technology can use multiple data stream transmission technology to realize space division multiplexing when the channel quality is good, so as to improve the data transmission rate; when the channel quality is poor, use The single data stream transmission technology obtains diversity gain and improves the reliability of data transmission. [0003] The effective combination of automatic repeat request (ARQ, Automatic Repeat-reQuest) and forward error correction (FEC, Forward Error Correction) not only provides higher reliability than a single FEC system, but also provides higher reliability than a single ARQ system. system throughput. Therefore, with the strong demand for high data rate or highly reliable services, H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/06
CPCH04L1/06H04L1/1893H04L1/1819H04L1/1822H04L1/1825H04L1/1867H04L27/2626H04L1/0041H04L1/1896
Inventor 郭阳
Owner ZTE CORP