US Patent No. 10,973,051

METHODS AND APPARATUS FOR PROTECTION OF MULTI-USER (MU) TRANSMISSIONS


Patent No. 10,973,051
Issue Date April 06, 2021
Title Methods And Apparatus For Protection Of Multi-user (mu) Transmissions
Inventorship Hanqing Lou, Syosset, NY (US)
Oghenekome Oteri, San Diego, CA (US)
Li-Hsiang Sun, San Diego, CA (US)
Xiaofei Wang, Cedar Grove, NJ (US)
Rui Yang, Greenlawn, NY (US)
Assignee INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)

Claim of US Patent No. 10,973,051

11. A method, implemented in an Institute of Electrical and Electronics Engineers (IEEE) 802.11 station (STA), the method comprising:detecting a trigger frame for an uplink (UL) multi-user (MU) transmission, wherein the trigger frame includes an indication that the trigger frame is a request for a bandwidth report and an identifier of at least one STA requested to respond to the trigger frame;
on a condition that an identifier associated with the IEEE 802.11 STA corresponds to the identifier of at least one STA requested to respond to the trigger frame, transmitting the bandwidth report in response to the trigger frame, wherein the bandwidth report includes channel availability information for a plurality of channels, the plurality of channels being a combination of 20 MHz sub-channels that make up a wider channel supported by an access point (AP); and
detecting data in a resource unit (RU) of a downlink (DL) MU physical layer (PHY) protocol data unit (PPDU) on at least one of the 20 MHz sub-channels.