US 12,279,303 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)
Appl. No. 17/774,839
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Nov. 4, 2020, PCT No. PCT/KR2020/015340
§ 371(c)(1), (2) Date May 5, 2022,
PCT Pub. No. WO2021/091231, PCT Pub. Date May 14, 2021.
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 2022/0394756 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
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)] 6 Claims
OG exemplary drawing
 
1. A method in a wireless local area network (WLAN) system, the method comprising:
receiving, by a first station (STA) included in 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; and
determining, by the first STA, whether to initiate transmission on the first link,
wherein the first STA determines not to transmit on the first link and keeps a back-off counter (BC) of the first STA at zero when the BC of the first STA reaches zero and the first STA operates on a part of the NSTR link pair,
wherein the first STA determines to initiate the transmission on the first link when the BC of the first STA is already zero and the second STA obtains a transmission opportunity (TXOP).