US 12,425,924 B2
Technique for performing low latency communication in wireless LAN system
Suhwook Kim, Seoul (KR); Jeongki Kim, Seoul (KR); and Jinsoo Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/755,027
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Oct. 19, 2020, PCT No. PCT/KR2020/014222
§ 371(c)(1), (2) Date Sep. 21, 2022,
PCT Pub. No. WO2021/080263, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 10-2019-0132531 (KR), filed on Oct. 23, 2019.
Prior Publication US 2023/0022414 A1, Jan. 26, 2023
Int. Cl. H04W 28/22 (2009.01); H04W 28/02 (2009.01); H04W 74/08 (2009.01)
CPC H04W 28/22 (2013.01) [H04W 28/0268 (2013.01); H04W 74/08 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting, by a station (STA), a first Physical Protocol Data Unit (PPDU) including a first management frame, wherein the first management frame includes information related to a duration for low latency communication;
transmitting, by the STA, a trigger frame soliciting a trigger based (TB) PPDU with the duration;
receiving, by the STA, the TB PPDU including low latency data based on the trigger frame, wherein the TB PPDU includes a legacy signal (L-SIG) field, a repeated L-SIG (RL-SIG) field being contiguous to the L-SIG field, and a first signal field being contiguous to the RL-SIG field,
wherein the L-SIG field includes a length field, and a value of the length field is set to satisfy a condition that a remainder is zero (0) when the value of the length field is divided by three (3),
wherein the first SIG field includes first information related to a PPDU type, second information related to an identifier of a basic service set (BSS), third information indicating duration information related to a transmission opportunity (TXOP), fourth information related to whether the PPDU is sent in uplink (UL) or in downlink (DL), fifth information related to a bandwidth, and sixth information having a length of 3 bits and indicating a physical (PHY) version of the PPDU; and
transmitting, by the STA, a second PPDU including a second management frame, wherein the second management frame includes information for terminating the duration.