Method, device and system for obtaining codebook

A codebook and master codebook technology, applied in the field of codebook acquisition, can solve the problem of increasing signaling overhead, and achieve the effect of reducing signaling overhead

Active Publication Date: 2021-03-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method, device and system for obtaining a codebook, so as to at least solve the problem in the related art that because each codeword corresponds to one bit, if the codebook is large, the signaling overhead becomes larger

Method used

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  • Method, device and system for obtaining codebook
  • Method, device and system for obtaining codebook
  • Method, device and system for obtaining codebook

Examples

Experimental program
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Effect test

Embodiment 1

[0036] In this embodiment, a method for obtaining a codebook is provided, figure 1 is a flowchart of a method for obtaining a codebook according to an embodiment of the present invention, such as figure 1 As shown, on the base station side, the process includes the following steps:

[0037] Step S102, the base station generates the corresponding to N according to the first preset condition t port, the r-layer transmits the codebook fed back by the precoding matrix, and the first preset condition is a common setting condition between the base station and the terminal;

[0038] Step S104, the base station determines a signaling indication method for selecting a codebook subset of the codebook according to the second preset condition;

[0039] In step S106, the base station notifies the terminal of the selected codebook subset through CSS signaling corresponding to the selected codebook subset according to the signaling indication method.

[0040] Specifically, in conjunction ...

Embodiment 2

[0179] Another method for obtaining a codebook is provided in this embodiment, figure 2 is a flowchart of a method for obtaining a codebook according to an embodiment of the present invention, such as figure 2 As shown, on the terminal side, the process includes the following steps:

[0180] Step S202, the terminal generates the corresponding N according to the first preset condition t port, the r-layer transmits the codebook fed back by the precoding matrix, and the first preset condition is a common setting condition between the base station and the terminal;

[0181] Step S204, the terminal determines a signaling indication method for selecting a codebook subset of the codebook according to the fourth preset condition;

[0182] Step S206, the terminal receives code subset selection signaling;

[0183] Step S208, the terminal determines the codebook subset according to the signaling indication method and the code subset selection signaling.

[0184] Specifically, in co...

Embodiment 3

[0206] In this embodiment, another method for obtaining a codebook is provided, image 3 is a flowchart of a method for acquiring a codebook according to another embodiment of the present invention, such as image 3 As shown, on the base station side, the process includes the following steps:

[0207] Step S302, the base station generates the corresponding to N according to the first preset condition t The port is the main codebook fed back by the r-layer transmission precoding matrix, and the first preset condition is a common setting condition between the base station and the terminal;

[0208] Step S304, the base station generates a codeword set corresponding to the codebook according to the sixth preset condition and the master codebook;

[0209] Step S306, the base station configures the codebook according to the notification, and the notification includes at least one of the following: selection information of the codeword set, and / or selection information of the codew...

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Abstract

The present invention provides a method, device and system for acquiring a codebook, through which the base station according to the present invention generates a codebook corresponding to N t Port, the r-layer transmits the codebook fed back by the precoding matrix, the first preset condition is a common setting condition between the base station and the terminal; the base station determines the signaling indication of the codebook subset selection of the codebook according to the second preset condition Method: The base station notifies the terminal of the selected codebook subset through CSS signaling corresponding to the codebook subset selection according to the signaling indication method, which solves the problem of signaling when the codebook is large because each codeword corresponds to a bit. The problem that the overhead becomes larger, and then the effect of reducing the signaling overhead is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method, device and system for acquiring a codebook. Background technique [0002] With the development of Multi-input Multi-output (MIMO for short) technology, the number of antennas supported by the transmitting end is increasing, resulting in an increasing dimension of the channel matrix and the channel information that needs to be fed back. If the quantization accuracy similar to that of a small number of antennas is to be maintained, the feedback overhead will increase significantly, and the complexity of the terminal will also increase significantly due to the large number of codewords. One solution is to use some correlation characteristics of the channel between the terminal and the base station to pre-configure a codebook with high quantization efficiency that matches it. There may be fewer codewords in this codebook, but because it matches the channel very well, it h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0456
CPCH04B7/0413H04B7/0478H04B7/0639H04B7/0658H04B7/0417H04B7/0473H04B7/0634H04B7/04
Inventor 陈艺戬李儒岳肖华华蔡剑兴鲁照华李永王瑜新
Owner ZTE CORP
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