Data transmission method, system and device of multi-input multi-output system

A data transmission method and multi-output technology, applied in transmission systems, digital transmission systems, using return channels for error prevention/detection, etc., can solve problems such as low transmission reliability, lack of acquisition space diversity, etc., and improve system throughput amount, improve reliability, and reduce the effect of retransmission ratio

Inactive Publication Date: 2009-11-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the prior art, for HARQ transmission such as in D-STTD mode, there is no mechanism to obtain space diversity between multiple transmissions, thus resulting in low transmission reliability

Method used

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  • Data transmission method, system and device of multi-input multi-output system
  • Data transmission method, system and device of multi-input multi-output system
  • Data transmission method, system and device of multi-input multi-output system

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Embodiment Construction

[0025] The invention provides a transmission method for a multiple-input multiple-output system, aiming at improving transmission reliability. Embodiments of the present invention are specifically introduced below.

[0026] In order to introduce space diversity between multiple transmissions in a Hybrid Automatic Repeat (HARQ) transmission process, an embodiment of the present invention proposes an adaptive spatial interleaving method for HARQ transmission.

[0027] The following takes dual space-time transmit diversity (D-STTD) as an example to specifically describe the implementation of the adaptive spatial interleaving method of the present invention.

[0028] The double space-time transmit diversity (D-STTD, Double Space Time Transmit Diversity) is a more commonly used MIMO mode in the existing MIMO antenna configuration, that is, the base station divides the data into two halves, and then uses Alamouti to perform space-time Encoding provides transmit diversity. The tran...

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Abstract

The invention relates to a data transmission method, a system and a device of a multi-input multi-output system, wherein the method comprises the following steps: a transmitting terminal transmits transmission signals by utilizing at least two groups of transmitting antennas, receives check response of a receiving terminal to received data and requests the retransmission if the check is failed; and the transmitting terminal changes the mapping relation between space-time block coding of the transmission signals and the antenna group and transmits the data requested retransmission. The invention changes the mapping relation between the transmitting antenna group and the transmission signal matrix during the data retransmission and realizes the space diversity, thereby improving the signal transmission reliability, increasing the receiving property and improving the system throughput. Especially, the invention realizes the space diversity of the HARQ transmission under a D-STTD mode.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a data transmission method, system and device of a multiple-input multiple-output system. Background technique [0002] Multiple Input Multiple Output (MIMO, Multiple Input Multiple Output) technology is a hotspot in the current research of wireless communication technology. Various new mobile communication systems adopt MIMO technology to improve the spectrum efficiency of the system. MIMO technology includes space diversity and space multiplexing. For spatial multiplexing, MIMO technology can increase the spatial dimension of data multiplexing, enabling multiple data spatial multiplexing to the same time-frequency resource. Typical spatial multiplexing technologies include Bell Labs vertical layered space-time technology (V -BLAST, Vertical Bell Labs Layered Space Time); For space diversity, MIMO can also obtain space diversity gain by sending the same data on multiple antenn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00H04L1/18H04L1/16
Inventor 张隽刘坚能郑树坤缪伟豪司宏杰杜颖钢
Owner HUAWEI TECH CO LTD
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