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Vector indication method for constructing precoding vector and communication device

A technology of precoding vector and indication information, which is applied in the direction of link quality-based transmission modification, signaling as a feature, and error prevention/detection through diversity reception, which can solve CSI report decoding failures and affect data transmission performance. , indicating different costs, etc.

Active Publication Date: 2021-03-02
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, when the number of transmission layers is different, the number of spatial domain vectors and / or the number of frequency domain vectors fed back by the terminal device may be different, and the resulting indication overhead may also be different
This may cause the feedback overhead of the channel state information (CSI) report to be unpredictable, cause the decoding of the CSI report to fail, and affect the subsequent data transmission performance

Method used

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  • Vector indication method for constructing precoding vector and communication device
  • Vector indication method for constructing precoding vector and communication device
  • Vector indication method for constructing precoding vector and communication device

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Embodiment Construction

[0100] The technical solution in this application will be described below with reference to the accompanying drawings.

[0101] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (universal mobile telecommunication system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, future fifth generation (5th generation, 5G) system or new Wireless (new ra...

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Abstract

The invention provides a vector indication method for constructing a precoding vector and a communication device. The method comprises the steps that a terminal device generates a CSI report and sendsthe CSI report to a network device, wherein the CSI report is used for indicating the number of the space-frequency vector pairs reported for the R transmission layers, and the indication overhead ofthe number of the space-frequency vector pairs is irrelevant to the number R of the transmission layers. By fixing the indication overhead, the number indication of the space-frequency vector pairs reported for the R transmission layers can be designed in the first part of the CSI report, so that the network equipment decodes the first part based on the determined length. The network device can determine the overhead of the second part according to the information in the first part so as to decode the second part and obtain the information in the CSI report. Therefore, the successful decodingof the CSI report can be ensured, and the subsequent data transmission performance can be ensured.

Description

[0001] This application is a divisional application of a Chinese patent application filed on March 22, 2019 with the application number CN 201910224252.5 and the application name "Vector Indication Method and Communication Device for Constructing Precoding Vectors". This application requires a Chinese patent application submitted to the China Patent Office on December 29, 2018 with the application number 201811641071.4 and the application name "Vector Indication Method and Communication Device for Constructing Precoded Vectors" and on March 6, 2019 The priority of the Chinese patent application with application number 201910169583.3 and application title "Vector Indication Method and Communication Device for Constructing Precoded Vectors" filed with China Patent Office, the entire contents of which are incorporated by reference in this application. technical field [0002] The present application relates to the communication field, and more specifically, relates to a vector ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0456H04B7/06
CPCH04B7/0456H04B7/0626H04B7/0658H04L1/06H04B7/063H04L1/0026H04L1/0028H04B7/0469H04B7/0478H04L1/0606
Inventor 金黄平王潇涵毕晓艳
Owner HUAWEI TECH CO LTD