US 12,120,738 B2
Multi-user-RTS and CTS frames for a sub-channel selective transmission station
Jarkko L. Kneckt, Los Gatos, CA (US); Yong Liu, Campbell, CA (US); Jinjing Jiang, San Jose, CA (US); Tianyu Wu, Fremont, CA (US); Qi Wang, Sunnyvale, CA (US); and Su Khiong Yong, Palo Alto, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 30, 2021, as Appl. No. 17/461,630.
Claims priority of provisional application 63/077,476, filed on Sep. 11, 2020.
Prior Publication US 2022/0086910 A1, Mar. 17, 2022
Int. Cl. H04W 74/08 (2024.01); H04W 74/0816 (2024.01)
CPC H04W 74/0816 (2013.01) 21 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
an antenna node configured to communicatively couple to an antenna; and
an interface circuit, communicatively coupled to the antenna node, configured to communicate with a second electronic device and a third electronic device, wherein the electronic device is configured to:
provide, from the interface circuit, a multi-user (MU)-request-to-send (RTS) frame that communicates an RTS in a channel associated with the second electronic device and communicates a second RTS in a second channel associated with the third electronic device, wherein the third electronic device comprises a sub-channel selective transmission (SST) station and the second electronic device comprises a non-SST station; and wherein the MU-RTS comprises one or more user-information fields specific to the third electronic device and excludes the one or more user-information fields for the second electronic device; and
receive, at the interface circuit, an MU-clear-to-send (CTS) frame comprising a CTS in a third channel associated with the third electronic device, wherein the MU-RTS frame specifies a format type of the CTS frame and the format type comprises a reserved field with station-specific information, and the MU-CTS frame indicates one or more channels used to communicate the MU-CTS frame.