公开(公告)号：US20190215782A1

公开(公告)日：2019-07-11

申请号：US16328830

申请日：2017-07-25

Applicant: LG Electronics Inc.

Inventor： Kilbom Lee ,  Kijun Kim ,  Kyuseok Kim ,  Minki Ahn ,  Hyukjin Chae

IPC: H04W52/32 ,  H04L5/00

Abstract: A method for a terminal receiving a beam reference signal (BRS) and a physical broadcast channel (PBCH) in a wireless communication system can comprise the steps of: determining a power ratio of BRS to PBCH per resource element (RE) on the basis of the number of BRS ports; detecting the BRS and a demodulation reference signal (DMRS) on the basis of the number of the BRS ports; and determining whether or not the determined power ratio of BRS to PBCH is to be compensated to an estimated channel on the basis of the DMRS.

公开(公告)号：US20190174527A1

公开(公告)日：2019-06-06

申请号：US16207992

申请日：2018-12-03

Applicant: LG Electronics Inc.

Inventor： Jonghyun Park ,  Kilbom Lee

IPC: H04W72/12 ,  H04L5/00

Abstract: An uplink transmission and reception method and a device for the same in a wireless communication system are disclosed.More specifically, a method for performing an uplink transmission in a wireless communication system by a user equipment includes receiving, from a base station, downlink control information (DCI) for scheduling of an uplink shared channel; and performing the uplink transmission via the uplink shared channel based on the DCI, wherein the DCI includes a sounding reference signal resource indication (SRS resource indication, SRI) field carrying a SRI and a demodulation reference signal (DMRS) related field, wherein a number of layers for the uplink transmission is determined based on the SRI field, wherein a size of the DMRS related field is equally configured for each of candidates of the number of layers.

公开(公告)号：US10200100B2

公开(公告)日：2019-02-05

申请号：US15516571

申请日：2015-06-26

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06

Abstract: A method by which a base station receives feedback information on beamforming in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: transmitting an omni-directional beam formed uniformly in all directions, on the basis of a non-precoded first signal; transmitting a plurality of directional beams through a plurality of antenna ports on the basis of second signals precoded in different directions; and receiving feedback information from a terminal, wherein the feedback information includes a gain difference between a first directional beam among the plurality of directional beams and the omni-directional beam, and an index of a first antenna port used in transmitting the first directional beam among the plurality of antenna ports.

公开(公告)号：US10171136B2

公开(公告)日：2019-01-01

申请号：US15154582

申请日：2016-05-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04W88/00 ,  H04B7/0404 ,  H04L5/00 ,  H04W88/02 ,  H01Q1/32 ,  H01Q21/28

Abstract: The present document is for a wireless communication with reduced internal signaling burden in the distributed antenna system (DAS). In the proposed method, a user equipment (UE) receives a first information unit from the network by a first distributed unit (DU) among multiple DUs distributed within the UE. The first DU reports reception information of the first information unit to a central unit (CU) of the UE, wherein the CU controls the multiple DUs. The first DU receives, from the CU, a direction regarding a transfer of the first information unit to the CU, and transfers the first information unit to the CU when the direction indicates a specific value.

公开(公告)号：US10050689B2

公开(公告)日：2018-08-14

申请号：US15302466

申请日：2015-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jiwon Kang ,  Kilbom Lee

IPC: H04B7/06 ,  H04B7/0456

Abstract: A method of determining a weight for a beamforming by a base station in a wireless communication system according to one embodiment of the present invention may include determining an angle of an analog beamforming in a hybrid beamforming in which the analog beamforming and a digital beamforming are coupled, obtaining a pre-compensation component with respect to the analog beamforming to be applied to the digital beamforming based on the angle of the analog beamforming, and determining the weight of the digital beamforming using the obtained pre-compensation component with respect to the analog beamforming and an angle determination component of the digital beamforming.

公开(公告)号：US20180205432A1

公开(公告)日：2018-07-19

申请号：US15576016

申请日：2016-04-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06

CPC classification number: H04B7/061 ,  H04B7/06 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/08 ,  H04B7/0802 ,  H04B17/24 ,  H04W4/44

Abstract: The present specification relates to a method by which a terminal transmits channel information to a base station in an inter-vehicle communication system. The method for transmitting channel information can comprise the steps of: measuring channel information and feeding the same back to the base station; and receiving data on the basis of the channel information. The terminal comprises a plurality of distributed antenna units (DU), and when it is possible to select whether to activate each of the plurality of DUs, a plurality of channel information sets are measured according to the number and the location of activated DUs, and the channel information to be fed back can include the plurality of channel information sets.

公开(公告)号：US20180167193A1

公开(公告)日：2018-06-14

申请号：US15571765

申请日：2016-05-03

Applicant: LG ELECTRONICS INC.

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

IPC: H04L7/04 ,  H04W72/04 ,  H04W24/10 ,  H04L27/26

CPC classification number: H04L7/04 ,  H04L27/2613 ,  H04L27/2657 ,  H04W24/10 ,  H04W56/0085 ,  H04W72/04 ,  H04W72/0466

Abstract: Disclosed is a method for receiving a synchronization signal, comprising: respectively receiving, from a plurality of base stations, a plurality of synchronization signals generated by using a phase pattern vector set, which is nested orthogonal and hierarchically configured; measuring a sequence index and an index of a phase pattern vector for the plurality of synchronization signals; selecting, among the plurality of base stations, a base station having the highest correlation value calculated as a measurement result; and establishing a connection with the selected base station, wherein the phase pattern vector set has different phase pattern vectors for changing a phase of a synchronization signal sequence up to a predetermined repetition number.

公开(公告)号：US09912396B2

公开(公告)日：2018-03-06

申请号：US15300322

申请日：2015-02-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/08 ,  H04B7/0456

CPC classification number: H04B7/0845 ,  H04B7/0417 ,  H04B7/0456 ,  H04J11/0033 ,  H04J11/005 ,  H04L5/0023 ,  H04L5/003 ,  H04L5/0073

Abstract: A method of processing a reception signal and a MIMO receiver are disclosed. The method includes the steps of selecting a reference RE from an RE group including a plurality of REs, generating a preprocessing filter to be shared by the plurality of the REs belonging to the RE group based on channel information of the reference RE and generating detection signals for the plurality of the REs in a manner of compensating reception signals for each of the plurality of the REs using the preprocessing filter and channel information of each of the plurality of the REs.

公开(公告)号：US09886812B2

公开(公告)日：2018-02-06

申请号：US14907792

申请日：2014-02-21

Applicant: LG ELECTRONICS INC.

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

IPC: G07F11/50 ,  G07F9/00 ,  H04B7/0417 ,  H04B7/06 ,  G07F11/38 ,  H04B7/0404

CPC classification number: H04L5/0048 ,  G07F9/00 ,  G07F11/38 ,  G07F11/50 ,  H04B7/024 ,  H04B7/0404 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0482 ,  H04B7/0691 ,  H04B7/0874 ,  H04B7/26

Abstract: In this disclosure, methods for antenna combining to meet the pilot requirement of the massive MIMO system, and apparatuses for the same are provided. In a user equipment (UE) perspective of view, the UE transmits first pilot signals via each of multiple antennas of the UE, and receives antenna combining information from a base station. Here, the antenna combining information combines the multiple antennas into one or more antenna groups based on the first pilot signals, and each of orthogonal sequences is allocated to each of the antenna groups. The UE transmits second pilot signals using the allocated orthogonal sequences for each of the antenna groups. The second pilot signals can be used for estimating downlink channel from the base station to the UE.

公开(公告)号：US09712304B2

公开(公告)日：2017-07-18

申请号：US14778982

申请日：2014-04-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/04

CPC classification number: H04L5/005 ,  H04B7/0617 ,  H04L5/0023 ,  H04W72/046

Abstract: A method by which a base station transmits a reference signal to a terminal in a wireless communication system is disclosed. Particularly, the method comprises the steps of determining a reference signal resource interval expressed as a unit of one or more resource blocks (RBs), setting reference signal resources for a downlink bandwidth defined by a plurality of RBs, according to the reference signal resource interval, and transmitting the reference signal to the terminal by using the set reference signal resources, wherein the reference signal resource interval is determined on the basis of the number of reference signal antenna ports for which quasi co-location (QCL) can be assumed.