公开(公告)号：US10182447B2

公开(公告)日：2019-01-15

申请号：US15309151

申请日：2015-04-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04W72/08 ,  H04B7/08 ,  H04B7/0404 ,  H04B7/0413 ,  H04L5/00 ,  H04W72/04

Abstract: Disclosed are a method and a receiver for processing a received signal, the method dividing a plurality of resource elements (RE) to create RE groups by considering the inter-relationships between the channels of the plurality of REs, selecting a reference RE for each RE group, and generating, for each RE group, a detection signal from a received signal on the basis of channel information of the reference RE.

公开(公告)号：US10090899B2

公开(公告)日：2018-10-02

申请号：US15748344

申请日：2016-03-17

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jiwon Kang ,  Kilbom Lee ,  Heejin Kim ,  Kungmin Park

IPC: H04B7/02 ,  H04B7/0456 ,  H04B7/06

Abstract: Disclosed in the present application is a method by which a terminal receives a signal, to which hybrid beamforming is applied, from a base station in a wireless communication system. More specifically, the method comprises the steps of: acquiring information on a first precoder for first beamforming of the hybrid beamforming; generating information on a precompensation precoder for the first beamforming by using the information on the first precoder; reporting the information on the precompensation precoder to the base station; and receiving, from the base station, a signal to which the precompensation precoder, the first beamforming, and second beamforming are applied, wherein the precompensation precoder adjusts, to zero degrees, a boresight direction of a signal to which the first precoder for the first beamforming is applied, and a second precoder for the second beamforming is configured to enable the signal to be transmitted in a final boresight direction on the basis of a boresight direction of zero degrees.

公开(公告)号：US20180234212A1

公开(公告)日：2018-08-16

申请号：US15749916

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Kungmin Park ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Heejin Kim

IPC: H04L1/18 ,  H04W72/12

CPC classification number: H04L1/1812 ,  H04B7/022 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/26 ,  H04L1/0026 ,  H04L1/1845 ,  H04L1/1854 ,  H04L1/1896 ,  H04W72/121

Abstract: Disclosed is a retransmitted data reception method comprising the steps of: receiving a first data packet from a base station through a first DU group including one or more DUs; receiving a second data packet, which is retransmitted for the first data packet, through a second DU group including another one or more of the DUs; and combining the first data packet and the second data packet so as to decode the combined data packet, wherein control information corresponding to the second data packet includes an HARQ process ID for notifying that the second data packet is retransmitted for the first data packet.

公开(公告)号：US10033448B2

公开(公告)日：2018-07-24

申请号：US14781862

申请日：2013-12-19

Applicant: LG ELECTRONICS INC.

Inventor： Jiwon Kang ,  Kilbom Lee ,  Hyunsoo Ko ,  Jaehoon Chung

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/0456 ,  H04W72/04

Abstract: A method and apparatus for performing fractional beamforming using a massive antenna array at a Base Station (BS) in a wireless communication system are disclosed. The method includes dividing the massive antenna array into partitions by rows or by columns, transmitting control information for the fractional beamforming to a User Equipment (UE), receiving feedback information based on the control information from the UE, and transmitting a signal to the UE by performing beamforming using sub-precoders for the partitions and a linking precoder that links the partitions. The control information includes at least one of information about the partitions, information about pilot patterns corresponding to the partitions, information about the linking precoder, and information indicating whether the partitions belong to the same transmission point.

公开(公告)号：US10015035B2

公开(公告)日：2018-07-03

申请号：US15523582

申请日：2015-11-02

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Wookbong Lee ,  Eunsung Park ,  HanGyu Cho ,  Jiwon Kang

IPC: H04L27/22 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04L27/2657 ,  H04L27/22 ,  H04W84/12

Abstract: Disclosed is a CFO estimation method comprising: generating a first function defined by reception signals in two successive OFDM symbols for a particular subcarrier; generating a second function defined on the basis of a sign of a real part of the first function; repeatedly performing a process of generating the first function and the second function for an entire subcarrier set; and determining a phase of a third function obtained by adding results of the repeated performance to be a residual CFO.

公开(公告)号：US10003392B2

公开(公告)日：2018-06-19

申请号：US15532946

申请日：2015-06-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0413

CPC classification number: H04B7/0626 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0619 ,  H04B7/063 ,  H04L5/0048 ,  H04L5/0057

Abstract: Disclosed in the present application is a method by which a terminal generates channel state information for multi-antenna-based beamforming in a wireless communication system. Specifically, the method comprises the steps of: receiving a first pilot signal and a second pilot signal from a base station; selecting a first rank on the basis of the first pilot signal and selecting a second rank on the basis of the second pilot signal; setting a rank search range for a three-dimensional channel on the basis of the first rank and the second rank; and selecting a rank for the three-dimensional channel within the rank search range and a precoder corresponding to the rank for the three-dimensional channel.

公开(公告)号：US20180159603A1

公开(公告)日：2018-06-07

申请号：US15578554

申请日：2016-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Heejin Kim ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Kungmin Park

IPC: H04B7/0456 ,  H04B7/06 ,  H04L27/26

Abstract: The present invention relates to a method and apparatus for transmitting precoding information by a specific user equipment (UE) in a wireless communication system. More specifically, the present invention relates to a method comprising receiving group information from a base station (BS), the group information comprising information indicating a representative UE in a UE group and information indicating one or more member UEs, the specific UE being one of the one or more member UEs; receiving first control information transmitted from the representative UE or the BS, the first control information comprising first precoding information; determining second precoding information based on the first precoding information; and transmitting second control information comprising the determined second precoding information to the BS; and an apparatus therefor.

公开(公告)号：US20180034607A1

公开(公告)日：2018-02-01

申请号：US15548703

申请日：2016-01-22

Applicant: LG Electronics Inc.

Inventor： Dongkyu Kim ,  Kilbom Lee ,  Kwangseok Noh ,  Sangrim Lee ,  Hyunsoo Ko ,  Kukheon Chol

IPC: H04L5/00 ,  H04W72/08 ,  H04L25/08

CPC classification number: H04L5/0048 ,  H04B17/345 ,  H04L5/1461 ,  H04L25/0228 ,  H04L25/08 ,  H04W72/082

Abstract: A method by which a communication device using an FDR method estimates a self-interference signal can comprise the steps of: transmitting, in a transmitting end, a pilot signal to which a selected sequence is applied; receiving, in a reception end, a self-interference signal relating to the pilot signal; and estimating a channel of a nonlinear self-interference signal component in a self-interference channel by using a cross correlation characteristic of the selected sequence.

公开(公告)号：US09705582B2

公开(公告)日：2017-07-11

申请号：US15304458

申请日：2015-04-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/08 ,  H04B7/04 ,  H04B7/0413

CPC classification number: H04B7/08 ,  H04B7/04 ,  H04B7/0413 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0228 ,  H04L25/03891

Abstract: Disclosed is a method for processing a reception signal, and a MIMO receiver, the method comprising a step in which: a reference resource element (RE) is selected within an RE group that comprises a plurality of REs; generated is a preprocessing filter which will be shared by the plurality of REs in the RE group on the basis of channel information of the reference RE; on the basis of channel information of the plurality of REs other than the reference RE, generated is a covariance matrix with respect to each of the REs other than the reference RE; and reception signals with respect to each of the plurality of REs are offset by selectively using the preprocessing filter and the covariance matrix, and thereby detection signals with respect to the RE group are generated.

公开(公告)号：US09379873B2

公开(公告)日：2016-06-28

申请号：US14758759

申请日：2013-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Jiwon Kang ,  Kilbom Lee ,  Hyunsoo Ko ,  Jaehoon Chung

IPC: H04L1/02 ,  H04L5/00 ,  H04B7/06 ,  H04W24/10 ,  H04B7/04

CPC classification number: H04L5/0057 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0634 ,  H04W24/10

Abstract: A method for performing fractional beamforming using a massive antenna array at a Base Station (BS) in a wireless communication system is disclosed. The method includes dividing the massive antenna array by rows or by columns into partitions, receiving feedback information about the partitions from a User Equipment (UE), determining sub-precoders for the partitions based on the feedback information, and transmitting a signal to the UE by performing beamforming using the sub-precoders and a linking precoder that links the partitions to each other.

Abstract translation: 公开了一种用于在无线通信系统中的基站（BS）处使用大规模天线阵列执行分数波束成形的方法。 该方法包括将大量天线阵列按行或列划分成分区，从用户设备（UE）接收关于分区的反馈信息，基于反馈信息确定分区的子预编码器，以及向UE发送信号 通过使用子预编码器执行波束成形和将分隔部彼此链接的链接预编码器。