公开(公告)号：US11870524B2

公开(公告)日：2024-01-09

申请号：US17274156

申请日：2019-09-05

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Jonghyun Park ,  Wonjae Ryoo ,  Wonjin Sung ,  Hyukjun Lee ,  Haewook Park

IPC: H04B7/06 ,  H04B7/0456 ,  H04B7/0491

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0491 ,  H04B7/0617

Abstract: A method for reporting channel state information (CSI) by user equipment (UE) for beamforming based on an antenna array in a wireless communication system according to an embodiment of the present disclosure includes: receiving a channel state information reference signal (CSI-RS); generating channel state information using the CSI-RS and a codebook generated in advance; and reporting the channel state information. The channel state information includes information related to a codevector determined in the codebook, the antenna array has a three-dimensional shape having omnidirectional symmetry, the codebook is generated based on a position of the UE having a center of the three-dimensional shape as an origin, and the position of the UE is represented based on a polar coordinate system.

公开(公告)号：US12074666B2

公开(公告)日：2024-08-27

申请号：US17629331

申请日：2020-07-23

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Haewook Park ,  Wonjae Ryoo ,  Wonjin Sung ,  Jonghyun Park

IPC: H04B7/0456 ,  H04B7/06 ,  H04B17/318 ,  H04L5/00 ,  H04W24/08

CPC classification number: H04B7/0456 ,  H04L5/0048 ,  H04W24/08

Abstract: Disclosed are a method for reporting channel state information (CSI) in a wireless communication system, and a device therefor. Specifically, a method for reporting CSI by a user equipment (UE) in a wireless communication system comprises the step of: receiving a CSI-related reference signal; measuring CSI on the basis of the reference signal and a codebook; and reporting the CSI, wherein reception and transmission operations of the UE are performed on the basis of a three-dimensionally shaped antenna array formed by arranging a plurality of antenna elements in a three-dimensional configuration, the antenna array comprises a plurality of antenna elements, and the codebook is generated on the basis of the path difference between the distance from the origin, which is the center of the three-dimensional shape, to the UE and the distance from a specific antenna element to the UE.

公开(公告)号：US20220021428A1

公开(公告)日：2022-01-20

申请号：US17295991

申请日：2019-11-14

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Wonjae Ryoo ,  Wonjin Sung ,  Haewook Park

IPC: H04B7/0456

Abstract: A method by which a base station transmits a signal on the basis of an antenna array in a wireless communication system, according to an embodiment of the present invention, comprises the steps of: determining a multi-rank beam in consideration of (i) positions of a plurality of terminals and (ii) positions of null points of a beam generated through the antenna array; and transmitting signals to the plurality of terminals by using the multi-rank beam. The antenna array may be based on a three-dimensional shape having omnidirectional symmetry, and the positions of the null points and the positions of the plurality of terminals may be configured on the basis of a polar coordinate system using the center of the antenna array as an origin point.