Method and device for transmitting precoded matrix indexes and precoding

A precoding matrix and precoding technology, applied in the field of communication, can solve the problem of inability to flexibly configure and use PMI, and achieve the effect of flexible configuration and use

Active Publication Date: 2014-01-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, it is impossible to flexibly configure and use PMI according to the conditions of the transmission channel

Method used

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  • Method and device for transmitting precoded matrix indexes and precoding
  • Method and device for transmitting precoded matrix indexes and precoding
  • Method and device for transmitting precoded matrix indexes and precoding

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] image 3 A flow chart of a method for sending PMI provided by an embodiment of the present invention, including:

[0036] In step 301, the UE acquires the capability of carrying the PMI on the transport channel.

[0037] In this embodiment, the transport channel refers to a channel that bears or carries the PMI, and may include: a PUCCH c...

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Abstract

An embodiment of the invention provides a method and device for transmitting precoded matrix indexes and precoding. The method for transmitting precoded matrix indexes includes allowing a user device to acquire the capacity of a transmission channel for carrying PMI; selecting a second codebook set formed by precoded matrixes from a first codebook set stored locally according to the capacity of the transmission channel for carrying the PMI; selecting a first precoded matrix from the second codebook set; transmitting the index corresponding to the first precoded matrix to a base station through the transmission channel, and allowing the base station to search for the first precoded matrix according to the index and precoding the data according to the first precoded matrix. According to the embodiment of the method, flexible configuration and usage of the PMI can be realized.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular to a method and device for sending a precoding matrix index and performing precoding. Background technique [0002] In the 3rd Generation Partnership Project (3rd Generation Partnership Project 3GPP) Long Term Evolution (LTE) version 10, the base station will introduce eight transmit antennas, and there are two antenna configuration methods for related antenna configurations. ULA antenna configuration such as figure 1 shown, and a dual-polarized antenna configuration such as figure 2 shown. In the current 3GPP discussion on the 8-antenna codebook, the following consensus has been reached. The current precoding consists of two parts [0003] W=W 1 W 2 (1) [0004] where W 1 belongs to a codebook set C 1 , W 2 belongs to another codebook set C 2 . w 1 Mainly represents the broadband / long-term channel characteristics; W 2 The subband / instantan...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L5/00
Inventor 吴强马提亚斯·文斯特隆孙卫军周永行
Owner HUAWEI TECH CO LTD
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