US 11,711,183 B2
Protocols for multi-access point coordinated multi-user transmissions
George Cherian, San Diego, CA (US); Alfred Asterjadhi, San Diego, CA (US); Abhishek Pramod Patil, San Diego, CA (US); Sameer Vermani, San Diego, CA (US); Bin Tian, San Diego, CA (US); Stephen Jay Shellhammer, San Diego, CA (US); Lochan Verma, San Diego, CA (US); Lin Yang, San Diego, CA (US); and Jialing Li Chen, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 3, 2019, as Appl. No. 16/559,605.
Claims priority of provisional application 62/744,626, filed on Oct. 11, 2018.
Claims priority of provisional application 62/726,968, filed on Sep. 4, 2018.
Claims priority of provisional application 62/749,041, filed on Oct. 22, 2018.
Prior Publication US 2020/0076552 A1, Mar. 5, 2020
Int. Cl. H04L 5/00 (2006.01); H04W 16/14 (2009.01); H04W 72/044 (2023.01); H04W 74/08 (2009.01); H04W 72/27 (2023.01); H04W 88/08 (2009.01); H04W 84/12 (2009.01)
CPC H04L 5/0035 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0037 (2013.01); H04W 16/14 (2013.01); H04W 72/044 (2013.01); H04W 72/27 (2023.01); H04W 74/0808 (2013.01); H04W 84/12 (2013.01); H04W 88/08 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a first access point (AP), comprising:
a first interface;
a second interface; and
a wireless modem, wherein the wireless modem is configured to:
output via the second interface for transmission to a second AP and during a first portion of a transmission opportunity, a request to participate in a multi-user transmission during a second portion of the transmission opportunity;
obtain, via the first interface, an indication of intent to participate in the multi-user transmission received from the second AP during the first portion of the transmission opportunity, wherein the indication of intent is for the second portion of the transmission opportunity, the indication of intent including a resource request of the second AP for participation in the multi-user transmission;
output, via the second interface for transmission during an initial period of the second portion of the transmission opportunity, a trigger signal to the second AP indicating a resource assignment that triggers generation of a preamble at the second AP, the preamble comprising an indication of a control channel for the second AP to use to communicate with one or more stations associated with the second AP during the multi-user transmission; and
provide data for transmission, in conjunction with the second AP and during the second portion of the transmission opportunity, as part of the multi-user transmission.