公开(公告)号：US10548171B2

公开(公告)日：2020-01-28

申请号：US15577494

申请日：2016-05-19

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08 ,  H04B7/06 ,  H04W84/12

Abstract: Provided is a method for performing random access, the method comprising: obtaining information associated with a phase pattern vector set and information associated with a sequence set to be used during a random access process; selecting one phase pattern vector corresponding to the number of repetitive transmissions of an RACH signal, among a plurality of phase pattern vectors included in the phase pattern vector set; transmitting, to a base station, an RACH signal during a time section corresponding to the number of repetitive transmissions of an RACH signal, at a predetermined transmission point in the entire time section corresponding to the maximum number of repetitive transmissions; and receiving, from the base station, an RACH response signal indicating an estimated sequence, an estimated phase pattern vector, and an estimated transmission point.

公开(公告)号：US10484899B2

公开(公告)日：2019-11-19

申请号：US15564488

申请日：2015-08-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W28/04 ,  H04W24/10 ,  H04W16/28 ,  H04W36/30 ,  H04W8/02 ,  H04W72/08 ,  H04L5/00 ,  H04W8/26 ,  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 network through a plurality of antenna units which are located in dispersed locations of the UE, determines, through a central unit thereof, whether a mobility related event of the UE has occurred through the signals received through the plurality of antenna units and transmits an event occurrence report to the network when the mobility related event of the UE has occurred, wherein whether the mobility related event of the UE has occurred is determined in consideration of receive (Rx) power of the signals received through the plurality of antenna units and a ray distribution between the network and the UE.

公开(公告)号：US10419095B2

公开(公告)日：2019-09-17

申请号：US15529958

申请日：2015-06-23

Applicant: LG ELECTRONICS INC.

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

IPC: H04L12/28 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/10 ,  H04L5/00 ,  H04B17/24 ,  H04B7/0404 ,  H04W72/12 ,  H04B7/0413 ,  H04W88/02 ,  H04W88/08 ,  H04B17/309 ,  H04B17/318 ,  H04B17/345

Abstract: The present application discloses a method for a terminal reporting channel state information to a base station in a wireless communication system. Specifically, the method comprises the steps of: receiving, from a base station, a first reference signal corresponding to a row of a transmission antenna array, and a second reference signal corresponding to a column of the transmission antenna array; receiving, from the base station, a cross polarization characteristics measurement indicator; and reporting, to the base station, channel state information comprising a first precoder corresponding to the first reference signal and a second precoder corresponding to the second reference signal, wherein the channel state information comprises cross polarization characteristics information between antenna ports that have the same indexes, the antenna ports being among antenna ports having the first reference signal and the second reference signal transmitted.

公开(公告)号：US10367562B2

公开(公告)日：2019-07-30

申请号：US15555929

申请日：2015-12-16

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06 ,  H04B7/0413

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

公开(公告)号：US10341156B2

公开(公告)日：2019-07-02

申请号：US15570555

申请日：2016-01-20

Applicant: LG Electronics Inc.

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

IPC: H04J11/00 ,  H04L27/26 ,  H04W56/00 ,  H04W74/00

Abstract: Disclosed is a synchronization signal receiving method comprising a step of respectively receiving, from a plurality of base stations, a plurality of synchronization signals generated by using a predetermined repetition frequency, sequence, and phase pattern vector, measuring a start timing of a frame, a sequence index, and an index of the phase pattern vector by using the plurality of synchronization signals with respect to each of the plurality of base stations, selecting the base station having the highest correlation value calculated as a result of the measurement among the plurality of base stations, and establishing a connection with the selected base station, wherein the phase pattern vector repeatedly changes the phase of the sequence at the repetition frequency.

公开(公告)号：US10340988B2

公开(公告)日：2019-07-02

申请号：US15750375

申请日：2016-06-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/0456 ,  H04B7/06 ,  H04W16/28

Abstract: The present invention relates to a method for transmitting channel information to a base station in a wireless communication system, and a device therefor, the method comprising the steps of: receiving information on a user equipment (UE) group in which a specific UE is included; receiving, from a representative UE of the UE group, first control information comprising first beam information; determining second beam information on the basis of the first beam information; and transmitting, to a base station, second control information comprising differential information between the determined second beam information and the first beam information.

公开(公告)号：US10291306B2

公开(公告)日：2019-05-14

申请号：US15561001

申请日：2015-07-24

Applicant: LG ELECTRONICS INC.

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

IPC: G01S7/52 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/08 ,  H04B7/024

Abstract: The present specification pertains to a method by which a terminal feeds back CSI information in a wireless communication system to which 3D beamforming is applied, the method comprising the steps of: receiving a pilot signal from a base station; setting either a first CSI transmission mode or a second CSI transmission mode; and feeding back CSI information on the basis of the set CSI transmission mode. Here, a period and offset of the CSI information to be fed back can be preset regardless of the CSI transmission mode.

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：US10212714B2

公开(公告)日：2019-02-19

申请号：US15120218

申请日：2014-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Jiwon Kang ,  Kitae Kim

IPC: H04W72/08 ,  H04B7/0413 ,  H04L25/03 ,  H04L5/00 ,  H04B7/0452

Abstract: Disclosed herein are a received signal processing method including selecting a reference resource element (RE) from an RE group including a plurality of REs, generating a common filter to be shared among the plurality of REs of the RE group based on channel information of the reference RE, detecting primary signals, from which channel influence is removed, of the plurality of REs by applying the common filter to received signals of the plurality of REs, and generating secondary signals by compensating for primary signals of REs except for the reference RE among the plurality of REs using channel information of the REs, and a multiple input multiple output (MIMO) receiver.