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1. (WO2017031672) PRECODING INFORMATION SENDING AND FEEDBACK METHOD AND APPARATUS

Pub. No.:    WO/2017/031672    International Application No.:    PCT/CN2015/087948
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Tue Aug 25 01:59:59 CEST 2015
IPC: H04B 7/04
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: LIU, Jianghua
刘江华
ZHANG, Leiming
张雷鸣
Title: PRECODING INFORMATION SENDING AND FEEDBACK METHOD AND APPARATUS
Abstract:
Disclosed is a precoding information sending and feedback solution. A base station generates a signalling indicator and sends same to a user equipment. The signalling indicator indicates information related to a precoding set, which is determined by the base station from a stored codebook, wherein the precoding set belongs to a sub-set of the stored codebook. The user equipment selects a precoding matrix according to the signalling indicator sent by the base station, and sends a precoding matrix indicator (PMI) to the base station according to the precoding matrix. The precoding matrix is selected and feedback is provided according to a precoding matrix set, and therefore, the search complexity of the precoding matrix and the number of bits in precoding feedback can be reduced.