US 10,973,051 B2
Methods and apparatus for protection of multi-user (MU) transmissions
Hanqing Lou, Syosset, NY (US); Oghenekome Oteri, San Diego, CA (US); Li-Hsiang Sun, San Diego, CA (US); Xiaofei Wang, Cedar Grove, NJ (US); and Rui Yang, Greenlawn, NY (US)
Assigned to INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Appl. No. 16/64,281
Filed by INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
PCT Filed Jan. 6, 2017, PCT No. PCT/US2017/012453
§ 371(c)(1), (2) Date Jun. 20, 2018,
PCT Pub. No. WO2017/120418, PCT Pub. Date Jul. 13, 2017.
Claims priority of provisional application 62/276,090, filed on Jan. 7, 2016.
Prior Publication US 2019/0007973 A1, Jan. 3, 2019
Int. Cl. H04W 74/08 (2009.01); H04W 72/08 (2009.01); H04W 74/00 (2009.01); H04W 84/12 (2009.01)
CPC H04W 74/0816 (2013.01) [H04W 72/082 (2013.01); H04W 74/006 (2013.01); H04W 84/12 (2013.01)] 15 Claims
OG exemplary drawing
 
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.