	US 12,207,191 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)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jul. 5, 2024, as Appl. No. 18/764,803.
Application 18/764,803 is a continuation of application No. 18/036,148, previously published as PCT/KR2021/007063, filed on Jun. 7, 2021.
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 2024/0365227 A1, Oct. 31, 2024
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

1. A method in a wireless local area network (WLAN) system, the method comprising:

receiving, by a first non-access point (non-AP) station (STA), a beacon frame from a first AP; and

decoding, by the first non-AP STA, the beacon frame,

wherein the first AP operating on a first link and a second AP operating on a second link are affiliated with an AP multi-link device (MLD),

wherein the first non-AP STA operating on the first link and a second non-AP STA operating on the second link affiliated with a non-AP MLD,

wherein the beacon frame includes a critical update flag (CUF) subfield and a change sequence number (CSN), and

wherein the CUF subfield is set to 1 in the beacon frame until and including a next delivery traffic indication map (DTIM) beacon frame on the first link based on there being a change to the CSN for the second AP.