公开(公告)号：US11296917B2

公开(公告)日：2022-04-05

申请号：US16954892

申请日：2020-02-17

Applicant: LG Electronics Inc.

Inventor： Hyunsu Cha ,  Sukhyon Yoon ,  Kilbom Lee ,  Haewook Park

IPC: H04L27/26 ,  H04W52/42 ,  H04L5/00 ,  H04L5/02

Abstract: Disclosed herein is a method for transmitting a demodulation reference signal for an uplink control signal in a wireless communication system.
Specifically, the method performed by a terminal includes: generating a low peak to average power ratio (PAPR) sequence based on a length-6 sequence; generating a sequence used for the demodulation reference signal based on the low PAPR sequence; and transmitting, to a base station, the demodulation reference signal based on the sequence used for the demodulation reference signal, in which the length-6 sequence has an 8-phase shift keying (PSK) symbol as each element of a sequence.

公开(公告)号：US11271695B2

公开(公告)日：2022-03-08

申请号：US16619856

申请日：2018-06-12

Applicant: LG Electronics Inc.

Inventor： Hyungtae Kim ,  Jiwon Kang ,  Jonghyun Park ,  Haewook Park

IPC: H04L5/00 ,  H04B7/06 ,  H04L27/26 ,  H04W72/04

Abstract: Disclosed is a method for receiving a downlink signal by a terminal in a wireless communication system. Specifically, the method comprises the steps of: receiving, from a network, information on at least two first-type reference signal port groups and information on at least two second-type reference signal port groups; and receiving, from at least two transmission points constituting the network, a downlink signal including at least two codewords by using the information on the at least two first-type reference signal port groups and the information on the at least two second-type reference signal port groups, wherein the at least two first-type reference signal port groups correspond to different transmission points and the at least two second-type reference signal port groups correspond to different codewords.

公开(公告)号：US11223405B2

公开(公告)日：2022-01-11

申请号：US16764832

申请日：2018-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Kijun Kim ,  Jonghyun Park ,  Sukhyon Yoon

IPC: H04B7/06 ,  H04W24/10 ,  H04W72/04

Abstract: The present specification provides a method for reporting channel state information (CSI) on the basis of priorities in a wireless communication system. More specifically, the method performed by a terminal comprises: a step of receiving, from a base station, downlink control information (DCI) including a reporting trigger for a plurality of CSIs of the same type; and a step of reporting a specific CSI determined on the basis of a predetermined rule among the plurality of CSIs if a time resource and a frequency resource for reporting among the plurality of CSIs are the same, wherein the specific CSI is a CSI that has priority among the plurality of CSIs on the basis of the predetermined rule.

公开(公告)号：US11201654B2

公开(公告)日：2021-12-14

申请号：US16810300

申请日：2020-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Kijun Kim ,  Haewook Park

IPC: H04B7/06 ,  H04L5/00 ,  H04L5/14 ,  H04W72/04 ,  H04J11/00 ,  H04L27/26

Abstract: Disclosed herein is a method of receiving a channel state information-reference signal (CSI-RS) of a user equipment (UE) in a wireless communication system, including receiving CSI-RS resource information about a CSI-RS resource location having the CSI-RS mapped thereto, from a base station and receiving the CSI-RS through a CSI-RS resource at a location determined based on the CSI-RS resource information, wherein the CSI-RS resource information includes an index value indicating a location of a CSI-RS resource element where the CSI-RS is transmitted, a period and offset information of a subframe where the CSI-RS is transmitted, and information on a number of antenna ports where the CSI-RS is transmitted, wherein when the index value indicates locations of different CSI-RS resource elements by types of the subframe where the CSI-RS is transmitted and the CSI-RS is set to be transmitted alternately through a normal subframe and a special subframe within one wireless frame, the location of the CSI-RS resource is determined in additional consideration of a type of the subframe in addition to the CSI-RS resource information.

公开(公告)号：US11133852B2

公开(公告)日：2021-09-28

申请号：US16576086

申请日：2019-09-19

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Kijun Kim ,  Haewook Park

IPC: H04B7/06 ,  H04B7/0456 ,  H04W76/27 ,  H04W72/04

Abstract: A method, by which a terminal transmits channel state information in a wireless communication system, comprises a step for performing one integrated CSI process, the step for performing one integrated CSI process comprising the steps of: receiving, from a base station, a first channel state information-reference signal related to a CSI-RS resource which is not pre-coded; reporting, to the base station, a first pre-coding matrix indicator derived on the basis of the first CSI-RS; receiving, from the base station, a second CSI-RS related to one CSI-RS resource of a beam-formed CSI-RS type; and reporting, to the base station, a second rank indicator/channel quality indicator/second PMI derived on the basis of the second CSI-RS.

公开(公告)号：US11128365B2

公开(公告)日：2021-09-21

申请号：US16786348

申请日：2020-02-10

Applicant: LG Electronics Inc.

Inventor： Haewook Park ,  Kijun Kim

IPC: H04B7/06 ,  H04W72/04 ,  H04L27/26 ,  H04L1/16 ,  H04B7/0456 ,  H04W52/34 ,  H04B7/0404 ,  H04L1/18

Abstract: This specification provides a method of transmitting an uplink signal based on a codebook in a wireless communication system. More specifically, the method performed by a UE includes receiving, from a base station, downlink control information (DCI) including a first transmit precoding matrix indicator (TPMI), determining a codebook subset related to the transmission of the uplink signal based on the first TPMI, and transmitting, to the base station, the uplink signal based on the determined codebook subset. Accordingly, there is an advantage in that flexibility in the transmission antenna design of a UE can be increased because the degree of freedom of antenna port selection is increased.

公开(公告)号：US11122608B2

公开(公告)日：2021-09-14

申请号：US16099954

申请日：2018-07-10

Applicant: LG Electronics Inc.

Inventor： Kyuseok Kim ,  Hyungtae Kim ,  Haewook Park ,  Jiwon Kang ,  Kijun Kim ,  Jonghyun Park ,  Kilbom Lee

IPC: H04W72/12 ,  H04L5/00

Abstract: Disclosed is a method and apparatus for transmitting and receiving a Reference Signal (RS) performed by a User Equipment (UE) in a wireless communication system. According to the present invention, a method and apparatus includes receiving a first Dedicated Demodulation Reference Signal and a first Physical Downlink Shared Channel (PDSCH); receiving a Physical Downlink Control Channel (PDCCH) including Downlink Control Information (DCI) in relation to a configuration of the second Dedicated Demodulation Reference Signal based on the first PDSCH; and receiving the second Dedicated Demodulation Reference Signal and a second PDSCH based on the PDCCH, and the first Dedicated Demodulation Reference Signal is transmitted only on a single antenna port, and a configuration of the DCI is determined based on the maximum number of symbols to which the second Dedicated Demodulation Reference Signal is mapped.

公开(公告)号：US11121745B2

公开(公告)日：2021-09-14

申请号：US16475366

申请日：2018-01-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jiwon Kang ,  Hyunsoo Ko ,  Kijun Kim ,  Jonghyun Park ,  Haewook Park

IPC: H04B7/0417 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04W72/08

Abstract: Disclosed is a method for a terminal to report channel state information to a base station in a wireless communication system. The method comprises the steps of: receiving a first reference signal and a second reference signal which are cyclically beamformed in different directions in a predetermined resource unit from the base station; and reporting the channel state information to the base station on the basis of the first reference signal and the second reference signal, wherein the channel state information comprises a first precoder group corresponding to the first reference signal and a second precoder group corresponding to the second reference signal.

公开(公告)号：US11108440B2

公开(公告)日：2021-08-31

申请号：US16636321

申请日：2018-08-03

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsu Cha ,  Kijun Kim ,  Jonghyun Park ,  Haewook Park ,  Sukhyon Yoon

IPC: H04W4/00 ,  H04B7/0408 ,  H04B17/336 ,  H04B7/06 ,  H04L5/00 ,  H04W80/08

Abstract: The present invention relates to a method and an apparatus for performing beam management by a terminal in a wireless communication system. The present invention may provide a method and an apparatus in which a terminal receives, from a base station, configuration information of channel state information (CSI)-RS, and receives the CSI-RS on the basis of the configuration information, wherein the CSI-RS is transmitted through a plurality of antenna ports, and the terminal configures a beam of each of the plurality of antenna ports on the basis of the CSI-RS, wherein the CSI-RS is mapped to subcarriers on a frequency axis at an interval of predetermined number of resource elements (REs), and the CSI-RS is repeatedly transmitted according to the interval of the predetermined number of REs within a specific time period.

公开(公告)号：US11088732B2

公开(公告)日：2021-08-10

申请号：US16065085

申请日：2017-09-26

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Hyungtae Kim ,  Jonghyun Park

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0426

Abstract: Disclosed are a method for transmitting/receiving channel state information in a wireless communication system and an apparatus for the same. Particularly, a method for reporting channel state information (CSI) by a user equipment (UE) in a wireless communication system may comprise the steps of: receiving channel state information reference signal (CSI-RS) from a base station through a multi-antenna port; and reporting CSI to the base station, wherein the CSI includes selection information indicating multiple codewords used to generate a precoding matrix within a codebook for reporting the CSI, a power coefficient and a phase coefficient are applied to each of the multiple codewords and the precoding matrix is then generated on the basis of a linear combination of the multiple codewords to each of which the power and phase coefficients are applied, and the selection information and information indicating the power coefficient are transmitted at different CSI reporting instances.