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1. (WO2017157082) CSI FEEDBACK METHOD, PRECODING METHOD, TERMINAL AND BASE STATION

Pub. No.:    WO/2017/157082    International Application No.:    PCT/CN2016/113160
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Fri Dec 30 00:59:59 CET 2016
IPC: H04B 7/04
H04B 7/06
Applicants: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
电信科学技术研究院
Inventors: CHEN, Wenhong
陈文洪
GAO, Qiubin
高秋彬
LI, Hui
李辉
CHEN, Runhua
陈润华
RAKESH, Tamrakar
拉盖施
Title: CSI FEEDBACK METHOD, PRECODING METHOD, TERMINAL AND BASE STATION
Abstract:
Disclosed in the present invention are a channel state information (CSI) feedback method, a precoding method, a terminal and a base station. The channel state information (CSI) feedback method disclosed in the present invention comprises: a terminal selects a channel state information-reference signal (CSI-RS) resource or a CSI-RS port on a convention subband from among a CSI-RS resource set as configured in a base station according to downlink channel information; the terminal measures a channel quality indicator (CQI) according to the selected CSI-RS resource or CSI-RS port and a precoding matrix set corresponding to the selected CSI-RS resource or CSI-RS port, wherein the precoding matrix set includes one or more precoding matrices, and a physical resource on the convention subband corresponds to a precoding matrix in the precoding matrix set; and the terminal feeds back the CQI and indication information of the selected CSI-RS resource or CSI-RS port. According to the present invention, the matching degree between CSI and channel state may be improved.