US 10,560,896 B2
Method and device for receiving signals by station in wireless communication system
Jeongki Kim, Seoul (KR); Kiseon Ryu, Seoul (KR); Jinsoo Choi, Seoul (KR); Giwon Park, Seoul (KR); and Hangyu Cho, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 15/505,550
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Aug. 20, 2015, PCT No. PCT/KR2015/008688
§ 371(c)(1), (2) Date Feb. 21, 2017,
PCT Pub. No. WO2016/039534, PCT Pub. Date Mar. 17, 2016.
Claims priority of provisional application 62/068,774, filed on Oct. 27, 2014.
Claims priority of provisional application 62/067,378, filed on Oct. 22, 2014.
Claims priority of provisional application 62/040,432, filed on Aug. 22, 2014.
Prior Publication US 2017/0289911 A1, Oct. 5, 2017
Int. Cl. H04W 52/02 (2009.01); H04W 84/12 (2009.01); H04W 72/04 (2009.01)
CPC H04W 52/0235 (2013.01) [H04W 72/0446 (2013.01); H04W 84/12 (2013.01); Y02D 70/00 (2018.01)] 11 Claims
OG exemplary drawing
 
1. A method of transmitting a signal by a station (STA) operating in a wireless LAN system, the method comprising:
receiving, from an access point (AP), a first frame for switching a power saving (PS) mode to an awake mode; and
transmitting, to the AP, a second frame indicating the awake mode of the STA in response to the first frame,
wherein the second frame is a Null Data Packet (NDP) frame including a legacy field and a high efficiency-signal (HE-SIG) field, and
wherein the legacy field has a fixed symbol size regardless of a size of a resource allocated to the STA and the HE-SIG field comprises a fixed size field having a fixed symbol size regardless of the size of the resource allocated to the STA and a variable size field having a variable symbol size based on the size of the resource allocated to the STA.