US 12,232,032 B2
Method and apparatus for identifying change sequence information in multi-link operation in wireless LAN system
Jeongki Kim, Seoul (KR); and Jinsoo Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 18/036,148
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jun. 7, 2021, PCT No. PCT/KR2021/007063
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/108021, PCT Pub. Date May 27, 2022.
Claims priority of provisional application 63/119,584, filed on Nov. 30, 2020.
Claims priority of provisional application 63/118,753, filed on Nov. 27, 2020.
Claims priority of application No. 10-2020-0156901 (KR), filed on Nov. 20, 2020; application No. 10-2020-0164373 (KR), filed on Nov. 30, 2020; application No. 10-2020-0167643 (KR), filed on Dec. 3, 2020; application No. 10-2020-0177216 (KR), filed on Dec. 17, 2020; application No. 10-2020-0183625 (KR), filed on Dec. 24, 2020; and application No. 10-2020-0183819 (KR), filed on Dec. 24, 2020.
Prior Publication US 2023/0403647 A1, Dec. 14, 2023
Int. Cl. H04W 52/02 (2009.01); H04W 84/12 (2009.01)
CPC H04W 52/0216 (2013.01) [H04W 52/0219 (2013.01); H04W 84/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method in a wireless local area network (WLAN) system, the method comprising:
receiving, by a station (STA), a delivery traffic indication map (DTIM) beacon frame and a beacon frame from a first access point (AP); and
decoding, by the STA, the DTIM Beacon frame in a first awake state and the Beacon frame in a second awake state,
wherein the STA is included in a receiving multi-link device (MLD),
wherein the first AP and the second AP are included in a transmitting MLD,
wherein both the DTIM beacon frame and the beacon frame include a critical update flag (CUF) and a change sequence number (CSN),
wherein when a critical update of the second AP occurs, a value of the CUF is changed from 0 to 1 until transmission of a next DTIM Beacon frame, the value of the CUF is changed from 1 to 0 after transmission of the next DTIM beacon frame, and the CSN includes updated information, and
wherein the updated information is decoded in the second awake state regardless of the value of the CUF.