US 12,302,213 B2
Shared AP selection in multi-AP system
Sungjin Park, Seoul (KR); Jeongki Kim, Seoul (KR); Jinsoo Choi, Seoul (KR); Suhwook Kim, Seoul (KR); Taewon Song, Seoul (KR); and Insun Jang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/754,746
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Sep. 9, 2020, PCT No. PCT/KR2020/012138
§ 371(c)(1), (2) Date Apr. 11, 2022,
PCT Pub. No. WO2021/075725, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 10-2019-0129454 (KR), filed on Oct. 17, 2019; application No. 10-2019-0129456 (KR), filed on Oct. 17, 2019; application No. 10-2019-0129458 (KR), filed on Oct. 17, 2019; and application No. 10-2019-0148064 (KR), filed on Nov. 18, 2019.
Prior Publication US 2023/0328622 A1, Oct. 12, 2023
Int. Cl. H04W 40/12 (2009.01)
CPC H04W 40/12 (2013.01) 12 Claims
OG exemplary drawing
 
1. A method performed in a wireless local area network system, the method comprising:
receiving, by a sharing access point (AP) from a first AP, basic service set (BSS) information of the first AP;
receiving, by the sharing AP from a second AP, BSS information of the second AP;
receiving, by the sharing AP from a station (STA), a physical protocol data unit (PPDU) comprising a legacy signal (L-SIG) field, a repeated legacy signal (RL-SIG) field which is a repeat of the L-SIG field, a control signal field carrying information for interpreting the PPDU, and a data field,
wherein the RL-SIG field is contiguous to the L-SIG field, and the control signal field is contiguous to the RL-SIG field,
wherein the L-SIG field includes a length field which is set to a value satisfying a condition that a remainder is zero when the length field is divided by three (3),
wherein the control signal field includes a subfield related to a physical version of the PPDU and having a length of three bits,
wherein the data field includes a link report signal including link quality information between the first AP and the STA and link quality information between the second AP and the STA; and
selecting, by the sharing AP, the first AP as a shared AP based on first and second capability information and the link quality information.