公开(公告)号：US10779140B2

公开(公告)日：2020-09-15

申请号：US16568851

申请日：2019-09-12

Applicant: LG Electronics Inc.

Inventor： Heejin Kim ,  Jiwon Kang ,  Sunam Kim ,  Hanbyul Seo ,  Sangwook Lee

IPC: H04W4/48 ,  H04W72/04 ,  H04W4/44

Abstract: A vehicle communication apparatus includes a plurality of remote units (RUs) configured to transmit signals to a mobile communication network and to receive signals from the mobile communication network, and a central unit (CU) configured to provide data based on the signals received through the plurality of remote units to one or more devices located in a vehicle. The plurality of remote units includes an array antenna attached to a body of the vehicle.

公开(公告)号：US20200052741A1

公开(公告)日：2020-02-13

申请号：US16478577

申请日：2018-01-23

Applicant: LG Electronics Inc.

Inventor： Heejin Kim ,  Jiwon Kang ,  Sunam Kim ,  Hanbyul Seo ,  Sangwook Lee

IPC: H04B7/0404 ,  H04B7/08 ,  H04B7/0417 ,  H04L1/00 ,  H04W52/42 ,  H04W52/36

Abstract: Disclosed in the present application is a method by which a terminal having a plurality of distributed antenna groups transmits and receives a signal in a wireless communication system. Particularly, the method comprises the steps of: calculating channel quality indicators for each of distributed antenna groups; selecting a preferred distributed antenna group among the distributed antenna groups on the basis of the channel quality indicators; and reporting information on the channel quality indicators to a base station, wherein the method further comprises a step for reporting information on the preferred distributed antenna group to the base station when the preferred distributed antenna group differs from the preselected specific distributed antenna group.

公开(公告)号：US10285160B2

公开(公告)日：2019-05-07

申请号：US15033454

申请日：2013-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Soocheol Kyeong ,  Sungho Park ,  Kyunghaeng Lee ,  Hyunsoo Ko ,  Sunam Kim

IPC: H04B7/06 ,  H04H20/72 ,  H04W72/00 ,  H04W72/04 ,  H04B7/0413

Abstract: The present application discloses a method for transmitting, by a base station, a broadcast channel through a massive multiple-input multiple output (MIMO) antenna in a wireless communication system. Specifically, the method comprises the steps of: selecting broadcast channel dedicated antenna elements from among all antenna elements of the massive MIMO antenna; and transmitting the broadcast channel by performing a beamforming using the broadcast channel dedicated antenna elements. In the present invention, the power applied to the broadcast channel dedicated antenna elements in greater than the voltage applied to the remaining antenna elements.

公开(公告)号：US10158466B2

公开(公告)日：2018-12-18

申请号：US15327945

申请日：2015-02-12

Applicant: LG ELECTRONICS INC.

Inventor： Jiwon Kang ,  Sunam Kim ,  Kitae Kim ,  Kilbom Lee ,  Heejin Kim

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/0456 ,  H04W72/04 ,  H04L27/26 ,  H04B7/0452

Abstract: Disclosed herein is a method for transmitting a reference signal from a base station to a user equipment (UE) in a wireless communication system. The method includes mapping the reference signal defined by a plurality of antenna ports to resource elements, applying precoding to the reference signal using different precoders according to the plurality of antenna ports, and transmitting the precoded reference signal to the UE.

公开(公告)号：USRE46039E1

公开(公告)日：2016-06-21

申请号：US14337931

申请日：2014-07-22

Applicant: LG Electronics Inc.

Inventor： Jin Young Chun ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Sung Ho Park ,  Sunam Kim

IPC: H04K1/10 ,  H04L1/08

CPC classification number: H04L1/08

Abstract: A method of transmitting data in a wireless communication system is provided. The method includes generating duplicate data by using repetition coding, the duplicate data being the same as original data, shifting the phase of the duplicate data, and transmitting the original data and the phase-shifted duplicate data. The duplicate data is mapped to a modulation symbol having a different size or phase as that of the original data, thus to reduce the PAPR unlike the general repetition coding.

公开(公告)号：US09362997B2

公开(公告)日：2016-06-07

申请号：US14865654

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Sunam Kim ,  Binchul Ihm ,  Hyukmin Son ,  Jaehoon Chung

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/04 ,  H04B7/06 ,  H04W16/28

CPC classification number: H04B7/0456 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/061 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0695 ,  H04W16/28

Abstract: A method for performing hierarchical beamforming in a wireless access system and a device therefor are disclosed. Particularly, the method comprises: an initial step for allowing a base station to transmit a plurality of first beams, to which different steering vectors are applied, to a terminal through corresponding reference signals, and a repetition step for allowing the base station to transmit a plurality of second beams, to which different steering vectors are applied, to the terminal through corresponding reference signals by considering feedback information that contains an index of one or more beams received from the terminal, wherein the repetition step can be repeated up to a predetermined number of times.

公开(公告)号：US09356670B2

公开(公告)日：2016-05-31

申请号：US14688882

申请日：2015-04-16

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Sunam Kim ,  Dongguk Lim ,  Moonil Lee ,  Jaehoon Chung

IPC: H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L25/03 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/10 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/006 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03808 ,  H04W48/08 ,  H04W72/00 ,  H04W72/0413 ,  H04W72/0446

Abstract: A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8.

公开(公告)号：US09048904B2

公开(公告)日：2015-06-02

申请号：US14094504

申请日：2013-12-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsoo Ko ,  Sunam Kim ,  Dongguk Lim ,  Moonil Lee ,  Jaehoon Chung

IPC: H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L25/03

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/10 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/006 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03808 ,  H04W48/08 ,  H04W72/00 ,  H04W72/0413 ,  H04W72/0446

Abstract: A method for transmitting channel status information (CSI) via uplink in a wireless communication system includes transmitting a first precoding matrix indicator (PMI) and a second PMI at a subframe. A subsampled codebook for each of a precoding codebook for Rank-1 and a precoding codebook for Rank-2 is determined based on at least the first PMI or the second PMI. In case of the Rank-1 or the Rank-2, a number of elements for the first PMI is 8.

Abstract translation: 一种用于在无线通信系统中经由上行链路发送信道状态信息（CSI）的方法包括在子帧处发送第一预编码矩阵指示符（PMI）和第二PMI。 基于至少第一PMI或第二PMI来确定用于Rank-1的预编码码本和用于Rank-2的预编码码本中的每一个的子采样码本。 在Rank-1或Rank-2的情况下，第一个PMI的元素数量为8个。

公开(公告)号：US20150092875A1

公开(公告)日：2015-04-02

申请号：US14395796

申请日：2013-04-15

Applicant: (LG ELECTRONICS INC.)

Inventor： Jinmin Kim ,  Sunam Kim ,  Binchul Ihm ,  Hyukmin Son ,  Changhwan Park ,  Jaehoon Chung

IPC: H04B7/04 ,  H04B7/06 ,  H04W72/04

CPC classification number: H04B7/046 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0691 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03 ,  H04W72/0413

Abstract: A method for downlink beamforming in a wireless access system and a device therefor are disclosed. Specifically, the method comprises the following steps: transmitting, by an eNB, a reference signal to a UE through only a first antenna set from among whole antennas; receiving, by the eNB, channel state information (CSI) for the first antenna set from the UE; and transmitting, by the eNB, beamforming a downlink channel by using a precoding matrix for the whole antennas, wherein CSI for a second antenna set by which the reference signal has not been transmitted from among the whole antennas is calculated using the CSI for the first antenna set.

Abstract translation: 公开了一种用于无线接入系统中的下行链路波束成形的方法及其装置。 具体地说，该方法包括以下步骤：由eNB通过仅从整个天线中的第一天线组发送参考信号给UE; 由eNB接收来自UE的第一天线组的信道状态信息（CSI）; 并且由eNB通过使用用于整个天线的预编码矩阵来发送对下行链路信道进行波束成形，其中使用用于第一个天线的CSI来计算在整个天线中尚未发送参考信号的第二天线组的CSI 天线组。

公开(公告)号：US20150049623A1

公开(公告)日：2015-02-19

申请号：US14380391

申请日：2013-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Youngsoo Yuk ,  Sunam Kim ,  Jaehoon Chung

IPC: H04W36/00 ,  H04W24/08

CPC classification number: H04W36/0094 ,  H04W24/08 ,  H04W36/0055 ,  H04W36/0058 ,  H04W36/30 ,  H04W88/06

Abstract: A method and apparatus for performing handover by a user equipment (UE) in a C-RAN system is disclosed. The method for performing handover by a user equipment (UE) in a Cloud Radio Access Network (C-RAN) includes: measuring at least one candidate remote radio head (RRH); transmitting feedback information caused by the measurement to a primary RRH; and receiving information regarding a changed primary RRH according to the measurement result received from the primary RRH, wherein the measurement is performed to discriminate each RRH on the basis of a channel state information-reference signal (CSI-RS) antenna port discriminated per the at least one candidate RRH.

Abstract translation: 公开了一种用于由C-RAN系统中的用户设备（UE）执行切换的方法和装置。 用于由云无线电接入网（C-RAN）中的用户设备（UE）执行切换的方法包括：测量至少一个候选的远程无线电头（RRH）; 将由测量引起的反馈信息发送到主RRH; 以及根据从主RRH接收到的测量结果接收关于改变的主RRH的信息，其中，执行测量，以基于每个所识别的信道状态信息参考信号（CSI-RS）天线端口来区分每个RRH 最少一个候选人RRH。