公开(公告)号：US20200007205A1

公开(公告)日：2020-01-02

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：US20180248720A1

公开(公告)日：2018-08-30

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 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04L25/03929 ,  H04B7/0473 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0663 ,  H04L25/03923 ,  H04W84/045

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：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.

公开(公告)号：US20170373743A1

公开(公告)日：2017-12-28

申请号：US15540883

申请日：2015-12-18

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

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

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04W72/08 ,  H04B7/04

CPC classification number: H04B7/0626 ,  H04B7/024 ,  H04B7/0478 ,  H04B7/0669 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0082 ,  H04L5/0091 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0224 ,  H04W72/08

Abstract: A method for performing, by a UE, channel estimation in a wireless communication system includes: receiving, from an eNB, a control message including reference signal transmission pattern information representing a transmission pattern of a channel estimation reference signal (RS) transmitted through antenna ports; receiving the reference signal from the eNB on the basis of the received reference signal transmission pattern information; measuring a channel per antenna port of the eNB on the basis of the received reference signal; and feeding back channel state information related to the measured channel to the eNB.

公开(公告)号：US20160212643A1

公开(公告)日：2016-07-21

申请号：US14913641

申请日：2014-10-24

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Jonghyun PARK ,  Yoonsoo KIM ,  Wonjin SUNG ,  Jihoon SUNG ,  Hosik KANG

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

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0628 ,  H04L5/0023 ,  H04L5/0048 ,  H04W24/08

Abstract: A method and device for reporting channel state information in a wireless communication system is disclosed. The method for reporting channel state information (CSI) by means of a terminal in a wireless communication system according to an embodiment of the present invention includes: measuring a first reference signal transmitted from a first subset of antenna ports from among a plurality of antenna ports in a base station; measuring a second reference signal transmitted from a second subset of antenna ports from among the plurality of antenna ports; and reporting the CSI to the base station based on at least one of the measurement of the first reference signal and the measurement of the second reference signal, wherein at least one of the plurality of antenna ports is included in both the first subset and the second subset.

Abstract translation: 公开了一种用于在无线通信系统中报告信道状态信息的方法和装置。 根据本发明的实施例的通过无线通信系统中的终端报告信道状态信息（CSI）的方法包括：测量从多个天线端口中的天线端口的第一子集发送的第一参考信号 在基站; 测量从所述多个天线端口中的天线端口的第二子集发送的第二参考信号; 并且基于所述第一参考信号的测量和所述第二参考信号的测量中的至少一个向所述基站报告所述CSI，其中所述多个天线端口中的至少一个天线端口包括在所述第一子集和所述第二子载波中 子集。

公开(公告)号：US20140119301A1

公开(公告)日：2014-05-01

申请号：US14066302

申请日：2013-10-29

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Byounghoon KIM ,  Sukho SHIN ,  Wonjin SUNG ,  Jaewon KIM ,  Kijun KIM

IPC: H04L5/00

CPC classification number: H04L5/0091 ,  H04B7/0606 ,  H04B7/0617

Abstract: A method for transmitting a signal to a user equipment by a base station in a wireless communication system is disclosed. The method includes receiving information about a preferred beamforming vector in a first subframe from the user equipment, selecting a first random beamformer corresponding to the first subframe from a beamforming vector set for the first subframe, using the information about the preferred beamforming vector, transmitting a downlink signal to the user equipment in the first subframe using the first random beamformer, selecting a second random beamformer corresponding to a second subframe, using the first random beamformer, and transmitting a downlink signal to the user equipment in the second subframe using the second random beamformer.

Abstract translation: 公开了一种在无线通信系统中由基站向用户设备发送信号的方法。 该方法包括从用户设备接收关于第一子帧中的优选波束形成向量的信息，使用关于优选波束成形向量的信息，从针对第一子帧设置的波束成形向量中选择与第一子帧对应的第一随机波束形成器， 使用第一随机波束形成器向第一子帧中的用户设备发送下行链路信号，使用第一随机波束形成器选择与第二子帧对应的第二随机波束形成器，并且使用第二随机波形形成器向第二子帧中的用户设备发送下行链路信号 波束形成器。

公开(公告)号：US20130279356A1

公开(公告)日：2013-10-24

申请号：US13868668

申请日：2013-04-23

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

Inventor： Jonghyun PARK ,  Sukho SHIN ,  Jaewon KIM ,  Donghyun LEE ,  Kijun KIM ,  Wonjin SUNG

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04B7/0665 ,  H04B7/0695 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/1469 ,  H04W16/28 ,  H04W72/042

Abstract: A method in which a User Equipment (UE) measures a downlink signal in a wireless communication system is disclosed. The method includes receiving information about a Beam Direction Pattern (BDP) of the downlink signal and measuring the downlink signal based on the information about the BDP. The information about the BDP includes an index of a subframe in which the downlink signal is to be transmitted using a specific BDP and includes an identifier (ID) of the specific BDP. The BDP of the downlink signal is switched according to the subframe index based on the information about the BDP.

Abstract translation: 公开了一种在无线通信系统中用户设备（UE）测量下行链路信号的方法。 该方法包括接收关于下行链路信号的波束方向模式（BDP）的信息，并且基于关于BDP的信息来测量下行链路信号。 关于BDP的信息包括使用特定BDP发送下行链路信号的子帧的索引，并且包括特定BDP的标识符（ID）。 基于关于BDP的信息，根据子帧索引切换下行链路信号的BDP。

公开(公告)号：US20220329295A1

公开(公告)日：2022-10-13

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 ,  H04L5/00 ,  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：US20210242919A1

公开(公告)日：2021-08-05

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

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：US20190036573A1

公开(公告)日：2019-01-31

申请号：US16067508

申请日：2016-12-29

Applicant: LG ELECTRONICS INC. ,  SOGANG UNIVERSITY RESEARCH FOUDATION

Inventor： Jonghyun PARK ,  Junyeub SUH ,  Junsik SHIN ,  Wonjin SUNG ,  Kijun KIM

IPC: H04B7/0417 ,  H04B7/0456 ,  H04B7/06

Abstract: A method for transmitting and receiving signals based on a codebook in a multi-antenna wireless communication system, the method comprising: transmitting a channel state information reference signal (CSI-RS); 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, the codebook being included in each code vector And a phase difference between adjacent elements may be set to be different from each other.