公开(公告)号：US20190044589A1

公开(公告)日：2019-02-07

申请号：US16056262

申请日：2018-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Huiwon KIM ,  Wonjin SUNG ,  Kijun KIM

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0408

Abstract: A method for transmitting/receiving signals by a UE based on a codebook in a multi-antenna wireless communication system according to an aspect of the present invention includes: receiving a channel state information reference signal (CSI-RS) from a base station through multiple antenna ports; and reporting channel state information to the base station, wherein the channel state information includes a precoding matrix indicator (PMI) for indicating a specific code vector among a plurality of code vectors included in the codebook, wherein elements included in each code vector included in the codebook are selected from elements of a predetermined circular vector using an azimuth angle of the UE with respect to the base station and an oversampling factor.