公开(公告)号：US11171692B2

公开(公告)日：2021-11-09

申请号：US16464252

申请日：2019-02-11

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong Yun ,  Jinmin Kim ,  Sungjin Park ,  Jinsoo Choi

IPC: H04B7/0417 ,  H04B7/06 ,  H04L25/02 ,  H04W72/04 ,  H04B7/0456 ,  H04L5/00 ,  H04W84/12

Abstract: Provided are a method and apparatus for transmitting a feedback frame by performing multi input multi output (MIMO) beamforming procedure in a wireless local area network (WLAN) system. Specifically, a first station (STA) generates the feedback frame based on the MIMO beamforming procedure. The first STA transmits the feedback frame to a second STA. The feedback frame includes a feedback subcarrier for a predetermined frequency band. A first subcarrier transmitted first in the feedback subcarrier and a second subcarrier having subcarrier indices −2 and 2 are statically transmitted. The first subcarrier is configured as a left edge subcarrier or right edge subcarrier of the predetermined frequency band. A subcarrier index of a third subcarrier included in the feedback subcarrier is determined based on a grouping value which is a subcarrier interval. The third subcarrier is a subcarrier excluding the first subcarrier and the second subcarrier from the feedback subcarrier. The grouping value is dynamically changed based on channel state information.

公开(公告)号：US11122621B2

公开(公告)日：2021-09-14

申请号：US16629025

申请日：2018-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin Park ,  Jinmin Kim ,  Sunwoong Yun ,  Jinsoo Choi

IPC: H04W74/08 ,  H04W40/24 ,  H04W72/04 ,  H04W84/12

Abstract: The present specification presents a method for transmitting and receiving data of a station over a secondary channel in a wireless LAN (WLAN) system and an apparatus therefor. Particularly, the present invention may comprise the steps of: receiving, from an access point (AP), allocation information on the secondary channel of the wireless LAN system and information on the secondary channel; performing a channel sensing (CS) mechanism by using an interframe space (IFS) determined on the basis of the information on the secondary channel during an allocation interval in the secondary channel, wherein the allocation interval is indicated by the allocation information; and transmitting, to a second STA, data during the allocation interval from the point in time at which it is determined, according to the performed CS mechanism, that the secondary channel is in an idle state.

公开(公告)号：US11082113B2

公开(公告)日：2021-08-03

申请号：US16611194

申请日：2018-05-03

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin Park ,  Jinmin Kim ,  Sunwoong Yun ,  Jinsoo Choi

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/26 ,  H04W84/12

Abstract: Presented in the present specification are a method whereby a station performs beamforming training in a wireless LAN (WLAN) system, and a device for same. In particular, presented in the present specification are a method whereby a station performs beamforming training for frequency division multiple access (FDMA) transmission, and a device for same. The method according to the present specification comprises the steps of: transmitting a beamforming setup frame including beamforming training operation information and identification information on one or more second stations corresponding to one FDMA group; performing FDMA beamforming training by using multiple transmission sectors simultaneously on the basis of the beamforming training operation information; receiving a feedback result of the performed FDMA beamforming training from the one or more second stations; and transmitting a selection frame including channel allocation information for each station and FDMA transmission configuration information determined on the basis of the received feedback result.

公开(公告)号：US11057255B2

公开(公告)日：2021-07-06

申请号：US16844685

申请日：2020-04-09

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong Yun ,  Jinmin Kim ,  Sungjin Park ,  Jinsoo Choi

IPC: H04L27/26 ,  H04L5/00 ,  H04W84/12

Abstract: The present specification relates to a method for transmitting and receiving signals in a wireless local area network (WLAN) system and an apparatus therefor, the method comprising the steps of: generating a training sub-field consisting of a certain number of orthogonal frequency division multiplexing (OFDM) symbols; and transmitting, to a second STA, a signal including a header field and the training sub-field, wherein the transmitted signal is repeatedly transmitted T times (where T is a natural number) on the basis of information indicated by the header field after a data field.

公开(公告)号：US11018841B2

公开(公告)日：2021-05-25

申请号：US16940158

申请日：2020-07-27

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin Park ,  Jinmin Kim ,  Sunwoong Yun ,  Jinsoo Choi

IPC: H04L5/14 ,  H04W84/12 ,  H04L1/18 ,  H04W72/12 ,  H04W72/04

Abstract: The present specification discloses a method for transmitting and receiving acknowledgement (ACK) information in a wireless local area network (WLAN) system and a device for the same. More specifically, the present specification describes a method in which a station device scheduled according to a time division duplex (TDD) scheduling scheme transmits and receives ACK information based on TDD scheduling information and a device for the same.

公开(公告)号：US10764022B2

公开(公告)日：2020-09-01

申请号：US16328703

申请日：2018-10-01

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin Park ,  Jinmin Kim ,  Sunwoong Yun ,  Jinsoo Choi

IPC: H04L5/14 ,  H04W84/12 ,  H04W72/12 ,  H04W72/04 ,  H04L1/18

Abstract: The present specification discloses a method for transmitting and receiving acknowledgement (ACK) information in a wireless local area network (WLAN) system and a device for the same. More specifically, the present specification describes a method in which a station device scheduled according to a time division duplex (TDD) scheduling scheme transmits and receives ACK information based on TDD scheduling information and a device for the same.

公开(公告)号：US10680692B2

公开(公告)日：2020-06-09

申请号：US16173403

申请日：2018-10-29

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong Yun ,  Jinmin Kim ,  Eunsung Park ,  Dongguk Lim ,  Jinsoo Choi

IPC: H04B7/06 ,  H04B7/0417 ,  H04W72/04 ,  H04B7/0426 ,  H04L5/00 ,  H04L27/26

Abstract: Disclosed herein are a method for transmitting and receiving beamforming feedback information in a wireless local access network system and devices supporting the same.Particularly, disclosed herein are a method for transmitting and receiving beamforming feedback information related to feedback subcarrier indices, where the feedback subcarrier indices is determined based on a Ng value of subcarrier groupings and a number NCB of bonded channel.

公开(公告)号：US10659267B2

公开(公告)日：2020-05-19

申请号：US16326165

申请日：2018-04-09

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong Yun ,  Jinmin Kim ,  Sungjin Park ,  Jinsoo Choi

IPC: H04L27/26 ,  H04L5/00 ,  H04W84/12

Abstract: The present specification relates to a method for transmitting and receiving signals in a wireless local area network (WLAN) system and an apparatus therefor, the method comprising the steps of: generating a training sub-field consisting of a certain number of orthogonal frequency division multiplexing (OFDM) symbols; and transmitting, to a second STA, a signal including a header field and the training sub-field, wherein the transmitted signal is repeatedly transmitted T times (where T is a natural number) on the basis of information indicated by the header field after a data field.