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Channel information transmission method, data transmission method and equipment

A technology of channel information and equipment, which is applied in the direction of adjusting channel coding, wireless communication, and broadcast channel monitoring, etc., and can solve the problem of inaccurate feedback of precoding matrix W

Active Publication Date: 2017-11-21
BEIJING HUAWEI DIGITAL TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] In the current dual codebook structure, W 2 can only be achieved from b 0 ,b 2 ,...,b M-1 Select one of these M vectors, and the feedback to the precoding matrix W is not accurate enough

Method used

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  • Channel information transmission method, data transmission method and equipment
  • Channel information transmission method, data transmission method and equipment

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Embodiment Construction

[0213] In order to better understand the above purpose, solutions and advantages of the present application, the following provides a detailed description. The detailed description sets forth various embodiments of apparatuses and / or methods by using block diagrams, flowcharts, etc. figures and / or examples. In such block diagrams, flowcharts and / or examples, one or more functions and / or operations are included. Those skilled in the art will understand that: the various functions and / or operations in these block diagrams, flowcharts or examples can be implemented individually or jointly by various hardware, software, and firmware, or by any combination of hardware, software, and firmware. Composite implementation.

[0214]In the embodiment of the present invention, the second device sends a reference signal to the first device, and the first device performs channel estimation according to the received reference signal, generates channel information and feeds it back to the sec...

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Abstract

The invention relates to a channel information transmission method, a data transmission method and equipment so as to improve the feedback accuracy of a pre-coding matrix. The first equipment comprises a receiving module, a processing module and a transmitting module, wherein the receiving module is used for receiving a reference signal; the processing module is used for measuring the reference signal to obtain first channel information and second channel information; the transmitting module is used for transmitting the first channel information and the second channel information; the first channel information comprises identification information of M first vectors, and M is an integer which is not less than 2; the second channel information comprises information of a weighted combination factor used for performing weighted combination on N first vectors in the M first vectors, and N is a positive integer which is not greater than M; and the first channel information and the second channel information are used for forming a pre-coding matrix. The second equipment can perform weighted combination on the M first vectors according to the weighed combination factor indicated by the second channel information when generating a pre-coding matrix, rather than only select a feature vector from a plurality of feature vectors, so that the generated pre-coding matrix is more accurate.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a channel information sending method, a data sending method and equipment. Background technique [0002] Currently, in a Long Term Evolution (LTE) Frequency Division Duplexing (FDD) system, a user equipment (User Equipment, UE) performs channel estimation according to a reference signal sent by a base station, and then determines channel state information and For feedback, the channel state information includes a rank indicator (RankIndicator, RI), a precoding matrix index (Precoding Matrix Indicator, PMI) and a channel quality indicator (Channel Quality Indicator, CQI). [0003] Wherein, the PMI is an index to the precoding matrix, and the UE feeds back the PMI to the base station, and the base station determines the corresponding precoding matrix according to the received PMI, and performs precoding processing according to the determined precoding matrix,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06H04W72/12
CPCH04L1/0009H04L1/0026H04L1/0076H04L1/0675H04W72/1221H04B17/30H04B7/0456H04B7/0621H04W72/542H04L1/06H04B7/0408H04B7/0469H04B7/0695H04B7/0626H04B7/063H04B7/0639H04B7/043H04B7/0478H04B7/0634
Inventor 刘鹍鹏
Owner BEIJING HUAWEI DIGITAL TECH
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