公开(公告)号：US10231241B2

公开(公告)日：2019-03-12

申请号：US15504896

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L1/18 ,  H04B7/06 ,  H04W72/00 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: The present invention relates to a method and a device for transmitting a training symbol for hybrid beamforming. A method for transmitting a training symbol for estimating an analog beam in a wireless access system which supports hybrid beamforming according to one embodiment of the present invention comprises: a step of repeatedly transmitting a training symbol a number of times equivalent to the number of analog candidate beams; and a step of repeatedly transmitting a broadcasting channel a number of times equivalent to the number of analog candidate beams. A training symbol section, where the training symbol is transmitted, can be allocated to the same subframe as a subframe to which the repeatedly transmitted broadcasting channel is allocated.

公开(公告)号：US10218478B2

公开(公告)日：2019-02-26

申请号：US15505496

申请日：2015-06-25

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/08 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: A method is provided for determining a weight for hybrid beamforming. A base station signals, to a user equipment, a configuration for repeated transmission of a first omnidirectional beam equally formed in all directions, receives the first omnidirectional beam from the user equipment by forming a second omnidirectional beam, and repeatedly receives the first omnidirectional beam from the user equipment by sequentially forming a plurality of directional beams corresponding to a plurality of directions. The base station determines a weight for hybrid beamforming by obtaining a gain difference between the first omnidirectional beam received through the second omnidirectional beam and the first omnidirectional beam received through a first directional beam among the plurality of directional beams, selecting a precoding matrix indicator (PMI) and acquiring, based on the PMI, a coefficient of a phase shifter and a coefficient of a power amplifier for analog beamforming of the hybrid beamforming.

公开(公告)号：US10212590B2

公开(公告)日：2019-02-19

申请号：US15665717

申请日：2017-08-01

Applicant: LG ELECTRONICS INC.

Inventor： Genebeck Hahn ,  Jiwon Kang ,  Heejin Kim ,  Ilmu Byun ,  Heejeong Cho ,  Hyunjin Shim

IPC: H04W12/06 ,  H04L29/06 ,  G06F21/44 ,  H04W48/08 ,  H04W88/06

Abstract: Disclosed are an authentication method performed by a radio access network (RAN) node in a wireless communication system and an apparatus thereof. In the present disclosure, a first message indicating initiation of an authentication procedure of the RAN node for multiple user equipments (UEs) used for a specific purpose to attach to a network is transmitted, an authentication request message including first security information for authenticating the network is received from the first network node, second security information for authenticating the RAN node is transmitted to the first network node, and a complete message indicating completion of the authentication procedure is received from the first network node.

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：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：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：US12016012B2

公开(公告)日：2024-06-18

申请号：US17593537

申请日：2020-05-04

Applicant: LG ELECTRONICS INC.

Inventor： Seoyoung Back ,  Seungmin Lee ,  Heejin Kim

IPC: H04W72/04 ,  H04L27/26 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1263 ,  H04W72/20

CPC classification number: H04W72/1263 ,  H04L27/2614 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/20

Abstract: The method for transmitting, by a user equipment, a sidelink signal in a wireless communication system is a sidelink signal transmission method comprising: transmitting sidelink control information (SCI); mapping, to a plurality of sub-carriers, at least one complex-valued modulation symbol, which is related to a sidelink data signal, and a preset value; generating the sidelink data signal by modulating the at least one complex-valued modulation symbol and the preset value by orthogonal frequency division multiplexing (OFDM); and transmitting the sidelink data signal on the basis of the SCI, wherein the SCI comprises information regarding a sub-carrier set including at least one sub-carrier, to which the preset value is mapped, from among the plurality of sub-carriers, and at least one of the location and number in a frequency domain of the at least one sub-carrier, to which the preset value is mapped, is different for each sub-carrier set.