US 12,445,185 B2
Null data packet announcement (NDPA) frame indication
Michael Montemurro, Kanata (CA); Jung Hoon Suh, Kanata (CA); Osama Aboul-Magd, Kanata (CA); Stephen McCann, Kanata (CA); Yan Xin, Kanata (CA); and Kwok Shum Au, Kanata (CA)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on May 8, 2024, as Appl. No. 18/658,404.
Application 18/658,404 is a continuation of application No. 17/490,414, filed on Sep. 30, 2021, granted, now 12,021,594.
Prior Publication US 2024/0364406 A1, Oct. 31, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04K 1/10 (2006.01); H04B 7/06 (2006.01)
CPC H04B 7/0643 (2013.01) [H04B 7/0626 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor and at least one machine-readable medium storing executable instructions which when executed by the at least one processor configure the apparatus for:
sending, to one or more stations (STAs), a request for channel state information (CSI), the request comprising both a null data packet announcement (NDPA) frame and a null data packet (NDP), the NDPA frame including a first field and a second field, the first field comprising one or more bits set to indicate presence of the second field, the second field being separate from the first field and indicating a variant of the NDPA frame; and
receiving, from the one or more STAs, a CSI feedback response based on the request.