Title:
METHOD FOR TRANSMITTING/RECEIVING SIGNAL IN WIRELESS LAN SYSTEM AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/156513
Kind Code:
A1
Abstract:
Proposed are a method and a device for transmitting a feedback frame by carrying out a MIMO beamforming procedure in a wireless LAN system. Specifically, a first STA generates a feedback frame on the basis of a 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, being the first to be transmitted from the feedback subcarrier, and a second subcarrier, having a subcarrier index of -2 and 2, are statically transmitted. The first subcarrier is configured as a left-edge subcarrier or a right-edge subcarrier of the predetermined frequency band. A subcarrier index of a third subcarrier included in the feedback subcarrier is determined on the basis of a grouping value representing subcarrier spacing. The third subcarrier is a subcarrier in the feedback subcarrier other than the first subcarrier and the second subcarrier. The grouping value dynamically varies on the basis of channel state information.
Inventors:
YUN SUNWOONG (KR)
KIM JINMIN (KR)
PARK SUNGJIN (KR)
CHOI JINSOO (KR)
KIM JINMIN (KR)
PARK SUNGJIN (KR)
CHOI JINSOO (KR)
Application Number:
PCT/KR2019/001607
Publication Date:
August 15, 2019
Filing Date:
February 11, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04B7/06; H04B7/0417; H04L5/00
Foreign References:
| US20170111148A1 | 2017-04-20 | |||
| US20160204960A1 | 2016-07-14 | |||
| US20160380729A1 | 2016-12-29 | |||
| US20140093005A1 | 2014-04-03 | |||
| US20170033898A1 | 2017-02-02 |
Other References:
See also references of EP 3550736A4
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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