公开(公告)号：US10554360B2

公开(公告)日：2020-02-04

申请号：US16383138

申请日：2019-04-12

Applicant: LG Electronics Inc.

Inventor： Kilbom Lee ,  Jiwon Kang ,  Haewook Park

IPC: H04L5/00 ,  H04W52/34 ,  H04W72/04

Abstract: The present invention proposes a method of transmitting and receiving an uplink phase tracking reference signal between a user equipment and a base station in a wireless communication system and an apparatus therefore. According to one embodiment applicable to the present invention, the user equipment can transmit an uplink phase tracking reference signal to the base station using a power boosting level determined based on first information and second information received from the base station.

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：US10461907B2

公开(公告)日：2019-10-29

申请号：US16065122

申请日：2017-11-09

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Hyunsoo Ko ,  Jiwon Kang ,  Kyuseok Kim ,  Kijun Kim

IPC: H04L5/00 ,  H04W72/08 ,  H04W24/08 ,  H04L1/00 ,  H04W48/12

Abstract: According to an embodiment of the present specification, provided is a method for transmitting a signal that allows a user equipment to cancel phase noise by a base station in an mmWave communication system. In this case, the method may include: generating a PTRS for estimating phase noise of a downlink signal; transmitting PTRS power boosting level information for the PTRS to the user equipment via downlink signaling; and transmitting the PTRS via downlink signaling based on the PTRS power boosting level information. In this case, the PTRS power boosting level information may be determined based on at least one of MCS level and PRB size.

公开(公告)号：US10439847B2

公开(公告)日：2019-10-08

申请号：US16291983

申请日：2019-03-04

Applicant: LG Electronics Inc.

Inventor： Jonghyun Park ,  Jiwon Kang ,  Kijun Kim ,  Hanbyul Seo ,  Joonkui Ahn

IPC: H04L25/02 ,  H04L5/00 ,  H04W80/02 ,  H04B7/0456 ,  H04W72/04 ,  H04B7/06

Abstract: Disclosed are a method for transmitting and receiving an uplink in a wireless communication system and an apparatus therefore. Specifically, a method for uplink transmission by a User Equipment (UE) in a wireless communication system may include: receiving, from a base station, Sounding Reference Signal (SRS) configuration information, wherein the SRS configuration information includes a parameter set for power control of SRS for each SRS resource set and the SRS resource set includes one or more SRS resources; determining a transmission power of the SRS, based on the parameter set for power control of the SRS; and transmitting the SRS to the base station.

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.

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：US10178691B2

公开(公告)日：2019-01-08

申请号：US15326994

申请日：2015-03-10

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Eunjong Lee ,  Giwon Park ,  Jaehoon Chung ,  Jiwon Kang ,  Hyeyoung Choi

IPC: H04W72/12 ,  H04W28/02 ,  H04W72/04

Abstract: Disclosed herein are a method and apparatus for requesting scheduling in a wireless communication system. More specifically, a method of requesting scheduling for transmitting uplink data in a wireless communication system may include transmitting, by user equipment (UE), a Scheduling Request (SR) of an SR type selected from multiple SR types to an eNB, receiving, by the UE, an uplink grant determined according to the selected SR type from the eNB, and transmitting, by the UE, uplink data to the eNB through a physical uplink shared channel (PUSCH) resource allocated by the uplink grant.