Title:
METHOD FOR PERFORMING CHANNEL SOUNDING IN WIRELESS LAN SYSTEM AND APPARATUS SUPPORTING SAME
Document Type and Number:
WIPO Patent Application WO/2013/085289
Kind Code:
A1
Abstract:
The present invention relates to a method for performing channel sounding by means of an access point (AP) in a wireless LAN system. The method includes the steps of: transmitting a null data packet announcement (NDPA) frame to notify that an NDP is to be transmitted; transmitting the NDP; and receiving a feedback frame from a station (STA). The NDP includes a signal field. The signal field of the NDP is transmitted through two orthogonal frequency division multiplexing (OFDM) symbols. One of the two OFDM symbols is a repeated OFDM symbol signifying that the other is repeated.
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Inventors:
YOU HYANG SUN (KR)
SEOK YONG HO (KR)
PARK JONG HYUN (KR)
SEOK YONG HO (KR)
PARK JONG HYUN (KR)
Application Number:
PCT/KR2012/010507
Publication Date:
June 13, 2013
Filing Date:
December 06, 2012
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04B7/26; H04J11/00
Domestic Patent References:
| WO2011087578A2 | 2011-07-21 |
Foreign References:
| KR20090031434A | 2009-03-25 | |||
| KR20100130535A | 2010-12-13 | |||
| US20100271992A1 | 2010-10-28 | |||
| KR20100067894A | 2010-06-22 |
Attorney, Agent or Firm:
S&IP PATENT & LAW FIRM (KR)
에스앤아이피 특허법인 (KR)
에스앤아이피 특허법인 (KR)
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Claims: