公开(公告)号：US20200014513A1

公开(公告)日：2020-01-09

申请号：US16575170

申请日：2019-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Hyunsoo KO ,  Jiwon KANG ,  Kyuseok KIM ,  Kijun KIM

IPC: H04L5/00 ,  H04W72/08 ,  H04W24/08

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：US20190356438A1

公开(公告)日：2019-11-21

申请号：US16476722

申请日：2018-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Kijun KIM ,  Jonghyun PARK ,  Minki AHN

IPC: H04L5/00 ,  H04B7/0408

Abstract: According to one embodiment of the present specification, a method for determining a beam to be used by a terminal for communication in an mmWave communication system can be provided. Here, the method for determining a beam to be used by a terminal for communication may comprise the steps of: receiving a CSI-RS from a base station; reporting a preferred primary beam to the base station on the basis of the received CSI-RS; receiving secondary beam information from the base station on the basis of the preferred primary beam; reporting a preferred secondary beam from among the secondary beam information to the base station; and receiving a setting of a CSI-RS resource from the base station on the basis of the preferred secondary beam. Here, the secondary beam information may include the preferred primary beam and at least one secondary beam to which QCL is applied.

公开(公告)号：US20190296781A1

公开(公告)日：2019-09-26

申请号：US16065128

申请日：2018-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Kijun KIM ,  Kyuseok KIM ,  Kunil YUM

IPC: H04B1/10 ,  H04L5/00 ,  H04B7/0456 ,  H04L1/00 ,  H04B7/06

Abstract: A method for operating a user equipment in a wireless communication is provided as an embodiment of the present invention. The method may include: receiving modulation and coding scheme (MCS) information for each of two or more codewords from a base station (BS); determining a demodulation reference signal (DMRS) antenna port to which a phase tracking reference signal (PTRS) antenna port is mapped based on the MCS information; and receiving a PTRS based on the DMRS antenna port, wherein a DMRS antenna port with the lowest index among one or more DMRS antenna ports included in a codeword with the highest MCS among the two or more codewords may be determined as the DMRS antenna port.

公开(公告)号：US20190238293A1

公开(公告)日：2019-08-01

申请号：US16383138

申请日：2019-04-12

Applicant: LG Electronics Inc.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Haewook PARK

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

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：US20190215045A1

公开(公告)日：2019-07-11

申请号：US16099403

申请日：2016-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Kukheon CHOI ,  Jiwon KANG ,  Kitae KIM ,  Kilbom LEE ,  Heejin KIM ,  Kyuseok KIM

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/04 ,  H04B7/06 ,  H04B7/0617

Abstract: The present invention relates to a wireless access system supporting millimeter wave (mmWave), and provides a transmission/reception beam scanning method, a channel state information feedback method, and devices supporting the same. According to an embodiment of the present invention, a method for scanning a transmission/reception beam by a millimeter wave (mmWave) terminal in a wireless access system supporting mmWave may comprise the steps of: performing long term beam scanning in period N; transmitting feedback information including a first transmission beam identifier (Tx beam ID) acquired through the long term beam scanning to a mmWave base station; receiving an upper layer signal including reception beam scanning configuration information allocated for short term beam scanning; and performing the short term beam scanning in a reception beam scanning area on the basis of the reception beam scanning configuration information.

公开(公告)号：US20190200359A1

公开(公告)日：2019-06-27

申请号：US16328999

申请日：2017-08-25

Applicant: LG Electronics Inc.

Inventor： Kukheon CHOI ,  Ilmu BYUN ,  Kyuseok KIM ,  Minki AHN ,  Kilbom LEE

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0453 ,  H04L5/00 ,  H04L5/0048 ,  H04L25/02 ,  H04W72/04 ,  H04W72/0413

Abstract: A method for transmitting a multiplexed uplink control channel and localized sounding reference symbol (localized SRS) by a terminal comprises a step of dividing the uplink control channel into a plurality of uplink control channel sub-blocks in a frequency domain and then transmitting the divided uplink control channel, when a frequency bandwidth of the localized SRS is smaller than or equal to a coherent bandwidth, wherein the divided uplink control channel sub-blocks may be frequency-division-multiplexed together with at least one localized SRS and then transmitted in one symbol.

公开(公告)号：US20190159154A1

公开(公告)日：2019-05-23

申请号：US15571450

申请日：2016-05-09

Applicant: LG ELECTRONICS INC.

Inventor： Kitae KIM ,  Jiwon KANG ,  Kilbom LEE ,  Kungmin PARK ,  Heejin KIM

IPC: H04W56/00 ,  H04W72/04 ,  H04B7/06 ,  H04B7/0456

Abstract: Provided is a method for estimating a timing advance (TA) for each beam in a wireless communication system. First, a terminal transmits K preambles, to which K mutually different beam formings are applied, to a base station. The base station estimates the TA for each of the K received preambles. The base station can determine the final TA value of the terminal on the basis of the TAs estimated for each of the K preambles.

公开(公告)号：US20190158342A1

公开(公告)日：2019-05-23

申请号：US16313840

申请日：2017-06-21

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Kyuseok KIM ,  Kijun KIM ,  Minki AHN

IPC: H04L27/38 ,  H04L27/36 ,  H04L27/34

CPC classification number: H04L27/389 ,  H04L5/0048 ,  H04L27/34 ,  H04L27/3438 ,  H04L27/364 ,  H04L27/38 ,  H04L27/3863

Abstract: A method by which a base station transmits a reference signal in a wireless communication system can comprise the steps of: transmitting, to a terminal, information on a modulation method of a reference signal for estimating a phase difference between symbols in a time domain; and transmitting, to the terminal, the reference signal, for estimating the phase difference between the symbols, to which the modulation method is applied.

公开(公告)号：US20190097862A1

公开(公告)日：2019-03-28

申请号：US15527289

申请日：2015-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Wookbong LEE ,  Eunsung PARK ,  Hangyu CHO ,  Jiwon KANG

IPC: H04L27/26 ,  H04L27/227

CPC classification number: H04L27/2676 ,  H04L5/0007 ,  H04L5/001 ,  H04L27/0014 ,  H04L27/227 ,  H04L27/2657 ,  H04L2027/0026

Abstract: Disclosed is a CFO estimation method, which generates a first function defined by a received signal of two sequential OFDM symbols for a specific subcarrier, generates a second function defined on the basis of signs and magnitudes of a real number part and an imaginary number part of the first function, repeats the steps of generating the first function and the second function for all of a subcarrier set, and determines, as a residual CFO, a phase of a third function obtained by adding up the results of the repetition.

公开(公告)号：US20190058517A1

公开(公告)日：2019-02-21

申请号：US16126462

申请日：2018-09-10

Applicant: LG Electronics Inc.

Inventor： Jiwon KANG ,  Jonghyun PARK ,  Kilbom LEE ,  Kijun KIM ,  Sukhyon YOON

IPC: H04B7/06 ,  H04L5/00 ,  H04W76/27 ,  H04J13/16

Abstract: Disclosed is a method for transmitting and receiving a channel state information (CSI)-reference signal (RS) in a wireless communication system.Specifically, the method performed by a base station may include: configuring control information indicating that an antenna port for all CSI-RS resources included in a CSI-RS resource set is same, wherein the CSI-RS resource set is used for tracking at least one of a time or a frequency; transmitting the configured control information to a user equipment (UE); and transmitting the CSI-RS to the UE through all the CSI-RS resources.In doing so, the UE is capable of performing time/frequency tracking more precisely.