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.

公开(公告)号：US10291441B2

公开(公告)日：2019-05-14

申请号：US15753665

申请日：2016-08-17

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Jonghyun Park ,  Junyeub Suh ,  Wonjin Sung ,  Kijun Kim

IPC: H04L25/03 ,  H04B7/0456 ,  H04B7/06 ,  H04W84/04

Abstract: A method for constructing a codebook in a multiple-antenna wireless communication system and an apparatus therefor are disclosed. Specifically, constructing a codebook in a multiple-antenna wireless communication system comprises the steps of: receiving parameters for constructing a codebook from a base station; and constructing a codebook using the parameters for constructing the codebook, wherein the parameters for constructing the codebook may include a phase value (α) of a first code vector forming the codebook, a phase difference (β) between code vectors that are adjacent to one another within the codebook, and the number of bits (γ) that is required when feeding back a code vector selected thin the codebook.

公开(公告)号：US10116371B2

公开(公告)日：2018-10-30

申请号：US14914126

申请日：2014-10-24

Applicant: LG Electronics Inc.

Inventor： Jonghyun Park ,  Yoonsoo Kim ,  Wonjin Sung ,  Hosik Kang ,  Jihoon Sung

IPC: H04B7/04 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0456 ,  H04B7/0417 ,  H04W24/08

Abstract: Disclosed are a method for reporting channel state information in a wireless communication system and an apparatus therefor. A method by which user equipment reports channel state information (CSI) in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving, from a base station, an RRC message including at least one CSI-reference signal (CSI-RS) configuration for a first direction domain; respectively receiving through different subframes, a first CSI-RS from a first subset and a second CSI-RS from a second subset among a plurality of physical antenna elements in the base station on the basis of the CSI-RS configuration; and performing a CSI report by using the first and second CSI-RSs, wherein when the CSI-RS configuration for the first direction domain is one, the first CSI-RS and the second CSI-RS are respectively received from the first subset and the second subset by virtualization-varying antenna ports related to one CSI-RS configuration in a predetermined period.

公开(公告)号：US11374630B2

公开(公告)日：2022-06-28

申请号：US17295619

申请日：2019-11-19

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Jonghyun Park ,  Jiyeong Yang ,  Wonjin Sung ,  Haewook Park

IPC: H04L25/02 ,  H04B7/0456 ,  H04L5/00

Abstract: A method for reporting channel state information (CSI) by means of a terminal in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving a channel state information reference signal (CSI-RS) from a base station, wherein the CSI-RS is related to at least one panel of an antenna array of the base station; generating CSI on the basis of the CSI-RS and a codebook according to a specific shape of the at least one panel; and reporting the CSI to the base station.

公开(公告)号：US10965356B2

公开(公告)日：2021-03-30

申请号：US16482618

申请日：2018-01-31

Applicant: LG Electronics Inc. ,  Sogang University Research Foundation

Inventor： Haewook Park ,  Changhyeon Kim ,  Sungin Shin ,  Wonjin Sung ,  Hyukjun Lee ,  Jonghyun Park

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/08

Abstract: A method for reporting channel state information of a terminal comprises: a step of measuring CSI-RS transmitted from a base station; and a step of reporting CSI generated on the basis of the CSI-RS measurement to the base station, wherein the CSI comprises: a PMI for indicating a precoding matrix from a codebook and an RI for indicating a rank, wherein the PMI comprises a first PMI for a beam group selected by the terminal and a second PMI which comprises a beam sub-group selection information for beams included in the beam group and phase-matching information for each antenna port polarization for the selected beam sub-group, and wherein as the rank increases, the phase-matching information may be indicated with different granularity from each other depending on whether the beam sub-groups selected from the beam group are the same or different.

公开(公告)号：US10142004B2

公开(公告)日：2018-11-27

申请号：US15540877

申请日：2015-12-18

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Jonghyun Park ,  Hosik Kang ,  Junyeub Suh ,  Wonjin Sung ,  Kijun Kim

IPC: H04B7/06 ,  H04B7/0456 ,  H04L25/02 ,  H04L25/03 ,  H04B7/024

Abstract: A method for performing, by a UE, precoding using a codebook in a wireless communication system includes: receiving a reference signal for channel estimation from an eNB; estimating a channel through the received reference signal; determining a precoding matrix related to the estimated channel in a codebook; and feeding back, to the eNB, a precoding matrix index (PMI) corresponding to the determined precoding matrix, wherein the codebook is generated in consideration of at least one of a region to which the UE belongs and the position of the UE.

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：US20220021421A1

公开(公告)日：2022-01-20

申请号：US17295619

申请日：2019-11-19

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Jonghyun Park ,  Jiyeong Yang ,  Wonjin Sung ,  Haewook Park

IPC: H04B7/0456 ,  H04L5/00

Abstract: A method for reporting channel state information (CSI) by means of a terminal in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving a channel state information reference signal (CSI-RS) from a base station, wherein the CSI-RS is related to at least one panel of an antenna array of the base station; generating CSI on the basis of the CSI-RS and a codebook according to a specific shape of the at least one panel; and reporting the CSI to the base station.

公开(公告)号：US09729300B2

公开(公告)日：2017-08-08

申请号：US14363272

申请日：2012-12-06

Applicant: LG ELECTRONICS INC. ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION SOGANG UNIVERSITY

Inventor： Inkwon Seo ,  Byounghoon Kim ,  Wonjin Sung ,  Jaewon Kim ,  Jaeyong Park ,  Hyunggil Yoo

IPC: H04L5/00 ,  H04J11/00 ,  H04W72/04 ,  H04B7/024

CPC classification number: H04L5/0073 ,  H04B7/024 ,  H04J11/0053 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/0069 ,  H04L5/0092 ,  H04W72/0426 ,  H04W72/0446

Abstract: The present invention relates to a method for controlling a remote transmitting station in a wireless communication system, including a step of: a first transmission point transmitting to a second transmission point time resource information related to at least one or more remote transmitting stations among a plurality of remote transmitting stations, wherein the plurality of transmitting stations located at cell edges of the first transmission point and cell identifiers of the at least one or more remote transmitting stations are changed according to a time period instructed by the time resource information.