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1. (WO2018052255) METHOD AND APPARATUS TO ENABLE CHANNEL COMPRESSION IN ADVANCED WIRELESS COMMUNICATION SYSTEMS

Pub. No.:    WO/2018/052255    International Application No.:    PCT/KR2017/010103
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Fri Sep 15 01:59:59 CEST 2017
IPC: H04B 7/06
H04B 7/0413
Applicants: SAMSUNG ELECTRONICS CO., LTD.
Inventors: RAHMAN, Md. Saifur
ONGGOSANUSI, Eko
Title: METHOD AND APPARATUS TO ENABLE CHANNEL COMPRESSION IN ADVANCED WIRELESS COMMUNICATION SYSTEMS
Abstract:
A method of a user equipment (UE) for a channel state information (CSI) feedback in a wireless communication system. The method comprises receiving, from a base station (BS), CSI feedback configuration information for the CSI feedback including a spatial channel information (SCI) indicator for each subband (SB), wherein the SCI indicator indicates a SCI associated with the downlink (DL) channel matrix; determining a CSI matrix HK,N comprising a dimension K x N based on the CSI feedback configuration information, where K indicates a number of SBs and N indicates a number of components of the SCI; identifying, based on the CSI matrix HK,N , the SCI indicator that indicates a first set of d basis vectors comprising a dimension K x 1, a second set of d basis vectors comprising a dimension N x 1, and a set of d coefficients, and transmitting, to the BS, the CSI feedback including the identified SCI indicator indicating the first set of d basis vectors, the second set of d basis vectors, and a set of d coefficients over an uplink channel.