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1. (WO2018024157) CHANNEL STATE INFORMATION TRANSMITTING METHOD, RECEIVING METHOD, DEVICE AND SYSTEM

Pub. No.:    WO/2018/024157    International Application No.:    PCT/CN2017/094757
Publication Date: Fri Feb 09 00:59:59 CET 2018 International Filing Date: Fri Jul 28 01:59:59 CEST 2017
IPC: H04B 7/04
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: LIU, Jianqin
刘建琴
Title: CHANNEL STATE INFORMATION TRANSMITTING METHOD, RECEIVING METHOD, DEVICE AND SYSTEM
Abstract:
The present application relates to the field of mobile communications, and in particular to a multi-antenna technology in a wireless communication system. Provided in the instant application are a channel state information (CSI) transmitting method, device and system. In said solution, a terminal device feeds a first rank and a first pre-coded matrix indication used for a public channel back to a base station, and feeds a second rank and a second pre-coded matrix indication used for a service channel back to the base station. The first pre-coded matrix instruction is used to indicate a first pre-coded matrix in a first pre-coded matrix set. The second pre-coded matrix instruction is used to indicate a second pre-coded matrix in a second pre-coded matrix set. The first pre-coded matrix set is different from the second pre-coded matrix set. The channel state information is obtained by means of different pre-coded matrix sets being used for public channels and service channels. The present invention is able to satisfy system requirements, while also saving bits that are fed back.