US 12,408,217 B2
P2P transmission method
Sanggook Kim, Seoul (KR); Jeongki Kim, Seoul (KR); and Jinsoo Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/921,057
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Apr. 16, 2021, PCT No. PCT/KR2021/004819
§ 371(c)(1), (2) Date Oct. 24, 2022,
PCT Pub. No. WO2021/215753, PCT Pub. Date Oct. 28, 2021.
Claims priority of provisional application 63/038,135, filed on Jun. 12, 2020.
Claims priority of provisional application 63/014,136, filed on Apr. 23, 2020.
Prior Publication US 2023/0180314 A1, Jun. 8, 2023
Int. Cl. H04W 76/14 (2018.01); H04L 1/00 (2006.01); H04W 76/30 (2018.01); H04W 84/12 (2009.01)
CPC H04W 76/14 (2018.02) [H04L 1/0003 (2013.01); H04W 76/30 (2018.02); H04W 84/12 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method performed by a first non-access point (non-AP) station in a wireless local area network (WLAN) system, the method comprising:
transmitting, to an AP, a request signal comprising first information related to whether a transmission opportunity (TXOP) obtained by the AP is shared for a direct link between non-AP stations;
receiving, from the AP, a trigger frame, wherein the trigger frame includes bit information related to the TXOP obtained by the AP,
wherein the bit information has a first value when the TXOP obtained by the AP is shared for a first uplink communication from the first non-AP station to the AP and a second direct communication to a second non-AP station,
wherein the bit information has a second value when the TXOP obtained by the AP is shared only for the second direct communication;
transmitting, to the second non-AP station, a null data packet announcement (NDPA) and a null data packet (NDP) frame;
receiving, from the second non-AP station, channel information between the first non-AP station and the second non-AP station;
determining a modulation and coding scheme (MCS) and a number of space-time-stream (NSTS) based on the channel information; and
transmitting, to the second non-AP station, a physical protocol data unit (PPDU) based on the MCS and the NSTS.