US 12,170,926 B2
Access category for low latency
Suhwook Kim, Seoul (KR); Jeongki Kim, Seoul (KR); and Jinsoo Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/632,219
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed May 29, 2020, PCT No. PCT/KR2020/006962
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/033882, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 10-2019-0101050 (KR), filed on Aug. 19, 2019.
Prior Publication US 2022/0272580 A1, Aug. 25, 2022
Int. Cl. H04W 28/14 (2009.01); H04W 72/12 (2023.01); H04W 84/12 (2009.01)
CPC H04W 28/14 (2013.01) [H04W 84/12 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method in a wireless local area network system, the method comprising:
receiving, by a station (STA) from an access point (AP), a physical protocol data unit (PPDU) including a legacy signal (L-SIG) field, a repeated legacy signal (RL-SIG) field which is contiguous to the L-SIG field and is a repeat of the L-SIG field, and a universal (U-SIG) field which is contiguous to the L-SIG,
wherein the L-SIG field includes a length field which is set to a value satisfying a condition that a remainder is zero when the length field is divided by three,
wherein the U-SIG field includes version independent bits and version dependent bits being contiguous to the version independent bits,
wherein the U-SIG field has a length of 2 symbols,
wherein the version independent bits include a first subfield related to a physical version of the PPDU, a second subfield related to a duration of transmission opportunity (TXOP) for the PPDU, and a third subfield related to Basic Service Set (BSS) color ID for the PPDU,
wherein the PPDU further includes a Medium Access Control (MAC) header related to a low latency (LL) traffic,
wherein the MAC header includes first information related to a traffic identifier (TID) of the LL traffic and second information related to an activation condition to activate a queue of the LL traffic in the STA; and
based on the PPDU, transmitting, by the STA, a signal carrying the LL traffic.