公开(公告)号：US10425140B2

公开(公告)日：2019-09-24

申请号：US16076625

申请日：2016-03-09

Applicant: LG ELECTRONICS INC. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kitae Kim ,  Sae-Young Chung ,  Wonseok Jeon ,  Jinhak Kim ,  Jiwon Kang

IPC: H05B7/06 ,  H04B7/06 ,  H04B7/0456

Abstract: The present invention relates to a method for performing beamforming by using circular array antenna comprising a plurality of antennas, and a device therefor, and to a method and a device therefor, the method comprising the steps of: determining the number of operating antennas for a specific beam pattern; selecting at least one antenna among the plurality of antennas by using the determined number of operating antennas; and transmitting a signal through the selected at least one antenna, wherein the step of determining the number of operating antennas determines the number of operating antennas by using the inverse number of the square of the vertical beam width of the specific beam pattern.

公开(公告)号：US10412611B2

公开(公告)日：2019-09-10

申请号：US15564656

申请日：2015-08-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04L12/28 ,  H04W24/10 ,  H04W8/02 ,  H04W72/08 ,  H04L5/00 ,  H04W8/26 ,  H04W16/28 ,  H04W36/30 ,  H04J1/16 ,  H04W88/02 ,  H04W28/02

Abstract: The present invention relates to a method for efficiently supporting communication for vehicles in a next-generation wireless communication system and a device for the same. To this end, a user equipment (UE) receives signals from a single antenna of a network through a plurality of antenna units which are located in dispersed locations of the UE, determines whether or not a mobility-related event of the UE has occurred by means of the signals received through the plurality of antenna units, and, if a mobility-related event of the UE has occurred, transmits an event occurrence report to the network, wherein the occurrence of the mobility-related event of the UE is determined in accordance with the Rx power of the signals and the radio wave distribution between the network and the UE and, more particularly, the angle of arrival (AoA) of the signals received through the plurality of antenna units.

公开(公告)号：US10374686B2

公开(公告)日：2019-08-06

申请号：US15521150

申请日：2015-12-16

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/04 ,  H04B7/08 ,  H04B7/0408

Abstract: A method of receiving a signal, which is received by a receiving end in a wireless communication system, is disclosed in the present specification. The method includes the steps of calculating effective Doppler spread values of reception beam combinations, wherein each reception beam combination consists of two or more reception beams among a plurality of reception beams; selecting a first reception beam combination from the reception beam combinations using the effective Doppler spread values; and receiving the signal from a transmitting end using at least one reception beam included in the selected first reception beam combination.

公开(公告)号：US10313175B2

公开(公告)日：2019-06-04

申请号：US15580262

申请日：2016-01-20

Applicant: LG ELECTRONICS INC.

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

IPC: H03D1/04 ,  H04L27/38 ,  H04L27/34 ,  H04L27/26 ,  H04W84/12

Abstract: Disclosed is a method for estimating a CFO, the method comprising: measuring a size ratio of a signal pair received in two consecutive OFDM symbols of a predetermined subcarrier; determining the received signal pair as a signal pair to be used for estimating a residual CFO when the size ratio is within a first threshold range; and estimating the residual CFO, using only the received signal pair which has been determined to be used for estimating the residual CFO.

公开(公告)号：US10299292B2

公开(公告)日：2019-05-21

申请号：US15549361

申请日：2016-02-15

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/00 ,  H04W74/08 ,  H04W76/10 ,  H04W88/08 ,  H04J13/00 ,  H04W76/27

Abstract: Provided is a method for detecting whether a random access channel (RACH) preamble collision occurs in a wireless communication system. An evolved Node B (eNB) receives, from a first user equipment (UE), a first RACH preamble generated by using a combination of a plurality of sequences, and also receives, from a second UE, a second RACH preamble generated by using one sequence. The eNB detects whether a collision occurs between the first RACH preamble and the second RACH preamble on the basis of the received patterns of the first RACH preamble and the second RACH preamble, wherein the received patterns of the first RACH preamble and the second RACH preamble are based on channel delay caused by multiple paths.

公开(公告)号：US10224990B2

公开(公告)日：2019-03-05

申请号：US15321722

申请日：2014-06-26

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/04 ,  H04W72/04 ,  H04W72/06 ,  H04B7/0456 ,  H04B7/06 ,  H04W88/02 ,  H04W88/08

Abstract: Disclosed in the present application is a method for a terminal reporting a precoding matrix index to a base station in a wireless communication system. Specifically, the method comprises the steps of: estimating a channel with the base station; on the basis of the estimated channel, selecting a first precoding matrix from a first codebook; on the basis of the estimated channel, selecting a second precoding matrix from a second codebook comprising only precoding matrixes which do not include the first precoding matrix; and reporting, to the base station, at least one among the index of the first precoding matrix and the index of the second precoding matrix.

公开(公告)号：US10200099B2

公开(公告)日：2019-02-05

申请号：US15737078

申请日：2016-01-14

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/02 ,  H04B7/06 ,  H04W4/46 ,  H04B7/0452 ,  H04B7/0408 ,  H04L5/00

Abstract: The present specification relates to a method by which a terminal designs a hierarchical structure precoder in a vehicle-to-vehicle communication system. The method for designing a hierarchical structure precoder can comprise the steps of: receiving group information indicating a terminal group on the basis of a direction of a first-type beam; feeding back preference information on the first-type beam on the basis of the group information; receiving first-type beam information determined on the basis of the preference information; designing a hierarchical structure precoder including a first precoder and a second precoder, on the basis of the received first-type beam information; and feeding back channel information on the basis of the hierarchical structure precoder, wherein the first precoder can be precoder information on the first-type beam direction, and the second precoder can be precoder information on a second-type beam direction in the first-type beam direction.

公开(公告)号：US10136337B2

公开(公告)日：2018-11-20

申请号：US14777315

申请日：2014-02-10

Applicant: LG ELECTRONICS INC.

Inventor： Sungho Park ,  Jaehoon Chung ,  Sunam Kim ,  Soocheol Kyeong ,  Jinmin Kim ,  Kitae Kim ,  Kyunghaeng Lee ,  Hyunsoo Ko ,  Jiwon Kang

IPC: H04W16/28 ,  H04B7/06

Abstract: A method for transmitting channel state information by a terminal comprises the step of: receiving relation information on a CSI-RS and a physical antenna from a base station by the terminal, the relation information including information on a first CSI-RS and a first physical antenna transmitting the first CSI-RS and information on a second CSI-RS and a second physical antenna transmitting the second CSI-RS; and transmitting first channel state information and second channel state information to the base station on the basis of the relation information by the terminal.

公开(公告)号：US10122431B2

公开(公告)日：2018-11-06

申请号：US15513419

申请日：2015-03-31

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/00 ,  H04B7/06 ,  H04B7/0452 ,  H04L25/02 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0456

Abstract: In the present application, a method for reporting channel status information (CSI) for multi-antenna-based beamforming by a terminal in a wireless communication system is disclosed. Specifically, the method comprises the steps of: receiving reference signal configuration information including two or more reference signal resources through an upper layer; receiving CSI process information through the upper layer; receiving a reference signal from a base station on the basis of the reference signal configuration information; and calculating the CSI on the basis of the CSI process information and the received reference signal and reporting the CSI to the base station, wherein the CSI process information includes a reference signal type indicator indicating a mapping relationship between the reference signal configuration information and multiple antennas.

公开(公告)号：US10110364B2

公开(公告)日：2018-10-23

申请号：US15107907

申请日：2014-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jaehoon Chung ,  Jinmin Kim ,  Kukheon Choi ,  Kwangseok Noh

IPC: H04L5/14 ,  H04W72/08 ,  H04B1/525 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04W52/14 ,  H04W72/04 ,  H04W52/24 ,  H04W88/02 ,  H04W88/08

Abstract: Disclosed are a method and a terminal for transmitting data, the method comprising the steps of: determining, during FDR communication with a base station, an overlap region from among a resource region for transmitting an uplink data channel, the overlap region being the resource region for a downlink control channel received from the base station; mitigating the effects of self-interference in the overlap region due to an uplink communication; and transmitting the uplink data channel by means of the overlap region for which the effects of self-interference have been mitigated and the region excluding the overlap region from among the resource region for transmitting the uplink data channel.