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Data sending method, data receiving method, network equipment and terminal equipment

A data sending method and technology of network equipment, applied in the fields of data sending method, network equipment and terminal equipment, and data receiving method, capable of solving problems such as inability to obtain a precoding matrix, failure of channel adaptation of a signal to be transmitted, and degradation of signal quality, Achieve the effect of improving robustness, improving reliability, and improving spatial freedom

Active Publication Date: 2018-11-13
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] MIMO systems usually use precoding technology to improve the channel. However, in the case of high-speed changes in the channel environment or other conditions where channel state information (CSI) cannot be obtained, a more accurate precoding matrix cannot be obtained. Therefore, after precoding The signal to be transmitted obtained by the encoding process cannot be accurately adapted to the current channel, resulting in a decrease in the quality of the received signal

Method used

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  • Data sending method, data receiving method, network equipment and terminal equipment
  • Data sending method, data receiving method, network equipment and terminal equipment
  • Data sending method, data receiving method, network equipment and terminal equipment

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Embodiment Construction

[0130] The technical solution in this application will be described below with reference to the accompanying drawings.

[0131] In order to facilitate the understanding of the embodiments of the present invention, first combine figure 1 The communication system applicable to the embodiment of the present invention will be described in detail. figure 1 A schematic diagram showing a communication system applicable to the method and apparatus for data transmission in the embodiment of the present invention. Such as figure 1 As shown, the communication system 100 includes a network device 102 that may include a plurality of antennas such as antennas 104 , 106 , 108 , 110 , 112 and 114 . In addition, the network device 102 may additionally include a transmitter chain and a receiver chain, and those of ordinary skill in the art may understand that they may include multiple components related to signal transmission and reception (such as processors, modulators, multiplexers, etc.) ...

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Abstract

The application provides a data sending method, a data receiving method, network equipment and terminal equipment. A diversity gain can be obtained to a greater degree, quality of a received signal isimproved, and reliability of data transmission is improved. The method comprises the steps that: the network equipment carries out transmission diversity preprocessing on one piece of modulation symbol stream to obtain at least one piece of transmission diversity spatial stream; the network equipment carries out pre-coding polling on the at least one piece of transmission diversity spatial streamto obtain at least one piece of pre-coded data stream, wherein each of the at least one piece of transmission diversity spatial stream corresponds to at least two different pre-coding vectors; and the network equipment sends the at least one piece of pre-coded data stream to first terminal equipment.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to a data sending method, a data receiving method, a network device and a terminal device. Background technique [0002] In a Long Term Evolution (Long Term Evolution, LTE) system and an LTE-Advanced (LTE-Advanced, LTE-A) system, the multi-antenna technology is increasingly used for data transmission. Multiple-input multiple-output (MIMO) technology refers to the use of multiple transmitting antennas and receiving antennas on the transmitting device and the receiving device, so that the signal is transmitted through multiple antennas of the transmitting device and the receiving device. and receive. [0003] MIMO systems usually use precoding technology to improve the channel. However, in the case of high-speed changes in the channel environment or other conditions where channel state information (CSI) cannot be obtained, a more accurate precoding matrix cannot be obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04L5/00
CPCH04B7/0456H04B7/0617H04B7/0669H04L5/0023H04L1/06H04L5/00H04B7/068H04B7/0482H04L5/0026
Inventor 吴晔毕晓艳
Owner HUAWEI TECH CO LTD
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