US 12,004,191 B2
Method and apparatus for coordinated multi-access point channel access in a wireless network
Yongho Seok, San Jose, CA (US); Jianhan Liu, San Jose, CA (US); James Chih-Shi Yee, San Jose, CA (US); James June-Ming Wang, San Jose, CA (US); Thomas Edward Pare, Jr., San Jose, CA (US); and Shihchieh Lee, San Jose, CA (US)
Assigned to MediaTek Singapore Pte. Ltd., Singapore (SG)
Filed by MediaTek Singapore Pte. Ltd., Singapore (SG)
Filed on Nov. 1, 2022, as Appl. No. 17/978,862.
Application 17/978,862 is a continuation of application No. 16/748,242, filed on Jan. 21, 2020, granted, now 11,523,423.
Claims priority of provisional application 62/925,822, filed on Oct. 25, 2019.
Claims priority of provisional application 62/797,968, filed on Jan. 29, 2019.
Prior Publication US 2023/0048964 A1, Feb. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 28/20 (2009.01); H04W 52/36 (2009.01); H04W 72/04 (2023.01); H04W 72/23 (2023.01)
CPC H04W 72/23 (2023.01) [H04W 52/367 (2013.01); H04W 72/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of coordinating uplink and downlink transmissions of a first wireless access point (AP) using a second wireless AP, the method comprising:
obtaining a transmission opportunity (TXOP) at the second wireless AP;
sending a frame from the second wireless AP to the first wireless AP, the frame comprising an uplink (UL) transmission time and a downlink (DL) transmission time;
signaling the first wireless AP using the second wireless AP to grant a portion of a bandwidth allocated by the TXOP to the first wireless AP; and
performing an RTS/CTS handshake with the first wireless AP, wherein the RTS/CTS handshake comprises a CTS-to-self frame, and the CTS-to-self frame comprises a CTS type field and a user info field that identifies a non-AP wireless station (STA) serviced by the first wireless AP,
wherein the first wireless AP schedules UL transmissions using the portion of the bandwidth according to the UL transmission time, and wherein the first wireless AP schedules DL transmissions using the portion of the bandwidth according to the DL transmission time.