US 12,218,866 B2
Trigger frame transmission in wireless communication system
Insun Jang, Seoul (KR); Jeongki Kim, Seoul (KR); Jinsoo Choi, Seoul (KR); Dongguk Lim, Seoul (KR); Eunsung Park, Seoul (KR); and Namyeong Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/925,811
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed May 18, 2021, PCT No. PCT/KR2021/006228
§ 371(c)(1), (2) Date Nov. 16, 2022,
PCT Pub. No. WO2021/235836, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 10-2020-0059192 (KR), filed on May 18, 2020; and application No. 10-2020-0061070 (KR), filed on May 21, 2020.
Prior Publication US 2023/0188278 A1, Jun. 15, 2023
Int. Cl. H04L 5/00 (2006.01); H04L 1/00 (2006.01); H04W 84/12 (2009.01)
CPC H04L 5/0044 (2013.01) [H04L 1/0013 (2013.01); H04W 84/12 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method performed by a station (STA) of a wireless local area network (WLAN) system, the method comprising:
receiving a trigger frame from an access point (AP),
wherein the trigger frame includes a common information field and a user information field,
wherein the common information field includes an uplink bandwidth field indicating an uplink bandwidth up to 160 MHz,
wherein the user information field includes an AID12 field related to an association identifier (AID), and the AID12 field has a length of 12 bits,
wherein the common information field includes a present field related to whether special information for all STAs which receive the trigger frame is included in the user information field,
wherein the AID12 field has a specific value for the special information included in the user information field,
wherein based on the AID12 field having the specific value the special information includes an uplink bandwidth extension subfield related to a 320 MHz uplink bandwidth,
wherein the user information field is contiguous to the common information field;
decoding the trigger frame; and
transmitting a trigger based physical protocol data unit (TB PPDU) in response to the trigger frame,
wherein a bandwidth of the TB PPDU is determined based on the uplink bandwidth extension subfield in the user information field together with the uplink bandwidth field in the common information field.