US 11,659,581 B2
Device and method for multi-access point beamforming in a wireless network
James June-Ming Wang, San Jose, CA (US); Yongho Seok, San Jose, CA (US); James Chih-Shi Yee, San Jose, CA (US); Jianhan Liu, San Jose, CA (US); and Thomas Edward Pare, Jr., San Jose, CA (US)
Assigned to Mediatek Singapore PTE. LTD., Singapore (SG)
Filed by MediaTek Singapore Pte. Ltd., Solaris (SG)
Filed on Apr. 7, 2020, as Appl. No. 16/842,652.
Claims priority of provisional application 62/830,635, filed on Apr. 8, 2019.
Prior Publication US 2020/0322964 A1, Oct. 8, 2020
Int. Cl. H04W 72/08 (2009.01); H04B 17/336 (2015.01); H04W 16/28 (2009.01); H04W 24/10 (2009.01); H04W 72/04 (2023.01); H04W 80/08 (2009.01); H04W 72/541 (2023.01); H04W 72/044 (2023.01)
CPC H04W 72/541 (2023.01) [H04B 17/336 (2015.01); H04W 16/28 (2013.01); H04W 24/10 (2013.01); H04W 72/046 (2013.01); H04W 80/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of coordinating beamforming in a multi-AP (MAP) wireless network, the method comprising:
establishing an agreement to collaborate between a first wireless AP and a second wireless AP, wherein the first wireless AP services a first basic service set (BSS) and the second wireless AP services a second BSS, and wherein further wireless stations (STAs) of the first BSS measure Physical Layer Convergence Procedure (PLCP) Protocol Data Units (PPDUs) received from wireless STAs in the second BSS to determine first interference information, and the wireless STAs of the second BSS measure PPDUs received from the wireless STAs in the first BSS to determine second interference information;
calibrating a receiver nulling while measuring a strength of the PDPUs received;
collecting the first interference information and the second interference information;
establishing interference maps based on the first interference information and the second interference information; and
performing Multi-AP beamforming to service the first BSS and the second BSS according to the interference maps,
wherein the Multi-AP beamforming is operable to mitigate interference between the first BSS and the second BSS.