公开(公告)号：CA3067186A1

公开(公告)日：2019-11-07

申请号：CA3067186

申请日：2019-04-02

Applicant: LG ELECTRONICS INC

Inventor： YUN SUNWOONG ,  KIM JINMIN ,  PARK SUNGJIN ,  CHOI JINSOO

IPC: H04B7/0417 ,  H04B7/0452 ,  H04B7/06

Abstract: A method and apparatus for transmitting a feedback frame in a wireless LAN system are provided. In detail, a first STA generates a feedback frame on the basis of MU-MIMO beamforming. The first STA transmits the feedback frame to a second STA. The feedback frame includes information related to a feedback sub-carrier regarding a pre-set frequency band, and a beamforming report field for MU-MIMO beamforming. The feedback sub-carrier includes a first sub-carrier transmitted first in the feedback sub-carrier and a second sub-carrier for determining a sub-carrier index on the basis of a grouping value related to a sub-carrier interval. The beamforming report field includes a first SNR of the first sub-carrier and a first differential SNR of the second sub-carrier. The first differential SNR is a SNR difference between sub-carriers adjacent to each other included in the feedback sub-carrier.

公开(公告)号：WO2018128293A1

公开(公告)日：2018-07-12

申请号：PCT/KR2017014533

申请日：2017-12-12

Applicant: LG ELECTRONICS INC

Inventor： YUN SUNWOONG ,  KIM JEONGKI ,  PARK EUNSUNG ,  LIM DONGGUK ,  CHOI JINSOO

IPC: H04W52/02 ,  H04L27/26 ,  H04W72/04

CPC classification number: H04L27/26 ,  H04W52/02 ,  H04W72/04 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/14

Abstract: A method for transmitting a wake up radio (WUR) packet by an access point (AP) in a wireless LAN (WLAN) system according to an embodiment of the present invention may comprise the steps of: selecting at least one of a plurality of WUR subbands included in a primary connectivity radio (PCR) band; and transmitting, through the at least one selected WUR subband, a WUR packet for waking up a plurality of stations (STAs) operating in a WUR mode, wherein the at least one WUR subband is selected by considering at least one of STA identifiers, assigned to the plurality of STAs respectively before the STAs enter the WUR mode, and an identifier of a basic service set (BSS) managed by the AP.