公开(公告)号：US10904752B2

公开(公告)日：2021-01-26

申请号：US16099972

申请日：2017-01-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04W12/06 ,  H04B7/0404 ,  H04B7/06 ,  H04W76/15 ,  H04B7/08 ,  H04W74/08 ,  H04B7/024 ,  H04W88/02

Abstract: Disclosed is a method for a terminal, which comprises a plurality of distributed antenna units, transmitting and receiving a signal in a wireless communication system. More particularly, the method comprises the steps of 1) performing a first random access procedure with a first cell by means of a first distributed antenna unit group and performing a second random access procedure with a second cell by means of a second distributed antenna unit group; 2) transmitting, to the first cell and the second cell, information about the distributed antenna units comprised in the corresponding antenna unit groups; and 3) performing an authorization procedure with the first cell by means of the first distributed antenna unit group and transmitting an authorization procedure skip request signal to the second cell by means of the second distributed antenna unit group.

公开(公告)号：US10812151B2

公开(公告)日：2020-10-20

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: H04B7/04 ,  H04B7/0404 ,  H04B7/0417 ,  H04B7/08 ,  H04L1/00 ,  H04W52/36 ,  H04W52/42

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：US10778347B2

公开(公告)日：2020-09-15

申请号：US16329884

申请日：2017-07-25

Applicant: LG Electronics Inc.

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

IPC: H04B17/21 ,  H04B17/318 ,  H04W4/44 ,  H01Q1/32 ,  H03L7/093 ,  H03M1/66 ,  H04B7/04 ,  H04W88/08

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：US10756794B2

公开(公告)日：2020-08-25

申请号：US16091940

申请日：2016-10-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/0456 ,  H04L1/00 ,  H04B7/022 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/08 ,  H04L5/00

Abstract: Disclosed herein is a method for reporting channel state information to a base station by a terminal having distributed antenna units in a wireless communication system. Specifically, the method for reporting channel state information comprises the steps of: receiving a reference signal from the base station; and reporting multi-channel state information on the basis of the reference signal, wherein the multi-channel state information includes a channel quality indicator for each of the distributed antenna units.

公开(公告)号：US10743268B2

公开(公告)日：2020-08-11

申请号：US16099630

申请日：2017-05-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04W56/00 ,  H04W76/30 ,  H04J11/00 ,  H04W24/10 ,  H04W68/02 ,  H04W72/14 ,  H04W74/08

Abstract: Provided are a method and an apparatus for obtaining downlink synchronization in a wireless communication system. The wireless communication system that is proposed has an environment in which the resource location of a downlink synchronization signal changes due to the application of multiple numerology. Particularly, a terminal receives synchronization signal information from a base station. The synchronization signal information includes candidate resources from which synchronization signals with respect to a tracking area can be transmitted, and the order of detecting the synchronization signals from the candidate resource win respect to the tracking area. The terminal detects the synchronization signal on the basis of the synchronization signal information.

公开(公告)号：US10539671B2

公开(公告)日：2020-01-21

申请号：US15557629

申请日：2016-01-20

Applicant: LG ELECTRONICS INC.

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

IPC: G01S13/524 ,  G01S5/02 ,  H04B7/06 ,  H04W56/00 ,  G01S5/12

Abstract: Disclosed is a Doppler distribution measurement method comprising: receiving a plurality of receive signals that arrive via different RE sets in different paths; measuring CFO values of the plurality of receive signals; selecting the two receive signals in which the difference in value between the CFO values are the greatest, from among the plurality of receive signals; and determining a Doppler shift difference between the selected two receive signals a an effective Doppler distribution.

公开(公告)号：US20200008208A1

公开(公告)日：2020-01-02

申请号：US16467560

申请日：2017-01-12

Applicant: LG Electronics Inc. ,  Korea Advanced Institute of Science and Technology

Inventor： Heejin Kim ,  Changho Suh ,  Jaewoong Cho ,  Jiwon Kang

IPC: H04W72/08 ,  H04W72/12 ,  H04W64/00 ,  H04W4/02 ,  H04W8/08

Abstract: A method for processing, by a base station, an interference in a wireless communication system includes determining a first base station group and a second base station group based on network topology information, determining a first precoder vector for the first base station group and a second precoder vector for the second base station group, the first precoder vector being linearly independent of the second precoder vector, and transmitting the first precoder vector and a first decoder vector to the first base station group and transmitting the second precoder vector and a second decoder vector to the second base station group, wherein the first decoder vector is included in a null space of the second precoder vector, and the second decoder vector is included in a null space of the first precoder vector.

公开(公告)号：US10469151B2

公开(公告)日：2019-11-05

申请号：US15760069

申请日：2016-05-17

Applicant: LG ELECTRONICS INC.

Inventor： Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Kukheon Choi ,  Heejin Kim ,  Kyuseok Kim

IPC: H04B7/06 ,  H04B7/0408 ,  H04B7/08 ,  H04B7/0413

Abstract: Disclosed in the present application is a method for receiving a downlink signal by a terminal from a base station in a wireless communication system. In particular, the present invention is characterized by comprising the steps of: receiving a beam scanning subframe, configured of a plurality of preambles for scanning transmission means at first intervals, from the base station; selecting a preferred transmission beam corresponding to one preamble from among the plurality of preambles, and a preferred reception beam corresponding to the preferred transmission beam reporting information on the preferred transmission beam to the base station; and receiving the one preamble and a certain subframe configured of a downlink physical channel beam formed by the preferred transmission beam at second intervals within the first interval.

公开(公告)号：US20190260485A1

公开(公告)日：2019-08-22

申请号：US16341235

申请日：2017-07-19

Applicant: LG Electronics Inc.

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

IPC: H04B17/336 ,  H04B17/24 ,  H04B7/0404 ,  H04B7/06 ,  H04W76/27 ,  H04W88/02 ,  H04W24/10 ,  H04W4/40

Abstract: Provided are a method and an apparatus for measuring inter-RU interference in order to perform space division duplex communication in a wireless communication system. Specifically, a terminal acquires first interference information indicating the strength of inter-RU interference after analog interference cancellation, and second interference information indicating the strength of inter-RU interference before analog interference cancellation. The terminal determines whether space division duplex communication can be performed between RUs, by comparing the interference strength indicated by the first interference information with a first threshold. The terminal determines whether inter-RU interference needs to be periodically measured, by comparing the interference strength indicated by the second interference information with a second threshold.

公开(公告)号：US10361830B2

公开(公告)日：2019-07-23

申请号：US15571601

申请日：2016-05-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/08 ,  H04L5/00 ,  H04B7/04 ,  H04L25/02 ,  H04W16/02 ,  H04W16/28 ,  H04W56/00 ,  H04B7/0413 ,  H04W88/02 ,  H04W88/08 ,  H04B7/06

Abstract: Provided are a method and an apparatus for transmitting an uplink reference signal in a wireless communication system. A terminal receives from a base station, information on the maximum repetition number of the uplink reference signal, determines the repetition number of the uplink reference signal using the received information on the maximum repetition number of the uplink reference signal and signal quality obtained through downlink synchronization, and repeatedly transmits, to the base station, the uplink reference signal according to the determined repetition number of the uplink reference signal. The base station determines the uplink coverage of the terminal on the basis of the repeatedly received uplink reference signal.