US 12,238,761 B2
Multi-link channel access
Insun Jang, Seoul (KR); Jeongki Kim, Seoul (KR); Jinsoo Choi, Seoul (KR); Suhwook Kim, Seoul (KR); Namyeong Kim, Seoul (KR); Sungjin Park, Seoul (KR); and Taewon Song, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jun. 30, 2023, as Appl. No. 18/216,921.
Application 18/216,921 is a continuation of application No. 17/774,839, previously published as PCT/KR2020/015340, filed on Nov. 4, 2020.
Claims priority of application No. 10-2019-0141254 (KR), filed on Nov. 6, 2019; application No. 10-2019-0165061 (KR), filed on Dec. 11, 2019; application No. 10-2019-0174512 (KR), filed on Dec. 24, 2019; application No. 10-2020-0002767 (KR), filed on Jan. 8, 2020; and application No. 10-2020-0030986 (KR), filed on Mar. 12, 2020.
Prior Publication US 2023/0345523 A1, Oct. 26, 2023
Int. Cl. H04W 74/00 (2009.01); H04W 76/15 (2018.01); H04W 84/12 (2009.01)
CPC H04W 74/002 (2013.01) [H04W 76/15 (2018.02); H04W 84/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method in a wireless local area network (WLAN) system, the method comprising:
receiving, by a first station (STA) affiliated with a multi-link device (MLD), a Beacon frame comprising a multi-link element including non-simultaneous transmit and receive (NSTR) information, wherein the NSTR information comprises a bitmap related to whether a first link and a second link form an NSTR link pair for the MLD or a simultaneous transmit and receive (STR) link pair for the MLD, wherein a corresponding bit in the bitmap is set to one (1) for the NSTR link pair and set to zero (0) for the STR link pair, wherein the first STA operates on the first link, wherein the MLD includes a second STA operating on the second link;
performing, by the first STA, channel access on the first link;
deferring, by the first STA, transmission of a first physical protocol data unit (PPDU) on the first link based on a back-off counter (BC) of the first STA reaching zero and the first STA operating on a part of the NSTR link pair; and
initiating, by the first STA, the transmission of the first PPDU on the first link based on the BC of the first STA already having reached zero and the second STA obtaining a transmission opportunity.