Title:
METHOD FOR OPERATING SOUNDING IN WIRELESS LAN SYSTEM, AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/007266
Kind Code:
A1
Abstract:
An embodiment of the present invention suggests a method in which an access point (AP) obtains channel quality information in a wireless LAN system. The AP transmits, to at least one station (STA), a null data packet announcement (NDP-A) frame including information on transmission of a subsequent null data packet (NDP) frame, and transmits an NDP frame to the at least one station on the basis of information on the NDP-A frame. Further, the AP receives, from the at least one STA, a feedback frame including downlink channel quality information. At this time, the NDP frame includes an L-part for a legacy STA and a high efficiency (HE)-part for a HE STA, wherein the HE-part consists of a HE-signaling A (HE-SIG A) field, a HE-short training field (HE-STF), and a HE-long training field (HE-LTF).
Inventors:
CHUN JINYOUNG (KR)
CHOI JINSOO (KR)
RYU KISEON (KR)
KIM JEONGKI (KR)
CHO HANGYU (KR)
LIM DONGGUK (KR)
CHOI JINSOO (KR)
RYU KISEON (KR)
KIM JEONGKI (KR)
CHO HANGYU (KR)
LIM DONGGUK (KR)
Application Number:
PCT/KR2016/007387
Publication Date:
January 12, 2017
Filing Date:
July 07, 2016
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04L1/00; H04L27/26; H04W24/10; H04W84/12
Domestic Patent References:
| WO2015068968A1 | 2015-05-14 | |||
| WO2015006637A1 | 2015-01-15 | |||
| WO2015006640A1 | 2015-01-15 |
Foreign References:
| US20150146807A1 | 2015-05-28 | |||
| US20150131517A1 | 2015-05-14 |
Attorney, Agent or Firm:
KIM, Yong In et al. (KR)
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