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1. (WO2017152749) FEEDBACK METHOD AND APPARATUS FOR CHANNEL STATE INFORMATION

Pub. No.:    WO/2017/152749    International Application No.:    PCT/CN2017/074248
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: H04L 1/00
H04L 1/06
Applicants: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
电信科学技术研究院
Inventors: LI, Hui
李辉
GAO, Qiubin
高秋彬
CHEN, Runhua
陈润华
CHEN, Wenhong
陈文洪
TAMRAKAR, Rakesh
塔玛拉卡·拉盖施
Title: FEEDBACK METHOD AND APPARATUS FOR CHANNEL STATE INFORMATION
Abstract:
Provided are a feedback method and apparatus for channel state information. The feedback method comprises: determining a first pre-coding matrix in a first pre-coding matrix set, and determining a first pre-coding matrix index value corresponding to the first pre-coding matrix; determining a second pre-coding matrix in a second pre-coding matrix set, and determining a second pre-coding matrix index value corresponding to the second pre-coding matrix, wherein the second pre-coding matrix comprises a beam selection section for selecting a beam in each antenna group and a phase adjustment section for adjusting a phase among a plurality of antenna groups; and feeding back the first pre-coding matrix index value and the second pre-coding matrix index value to an access device, the access device using the first pre-coding matrix index value and the second pre-coding matrix index value to select the corresponding pre-coding matrix from the first pre-coding matrix set and the second pre-coding matrix set, and after an operation is performed, the corresponding pre-coding matrix being used as a pre-coding matrix for data transmission.