US 11,057,862 B2
Wi-Fi radar detection using synchronized wireless access point
Alexander Scharf, Kfar-Saba (IL); Albert Rapaport, Shoham (IL); Hanoch Yokev, Kiryat Tivon (IL); and Tsahi Tal, Tel-Mond (IL)
Assigned to CELENO COMMUNICATIONS (ISRAEL) LTD., Raanana (IL)
Filed by CELENO COMMUNICATIONS (ISRAEL) LTD., Raanana (IL)
Filed on Aug. 25, 2019, as Appl. No. 16/550,232.
Claims priority of provisional application 62/722,911, filed on Aug. 26, 2018.
Prior Publication US 2020/0112939 A1, Apr. 9, 2020
Int. Cl. H04W 64/00 (2009.01); G01S 7/527 (2006.01); G01S 13/00 (2006.01); G01S 13/04 (2006.01); G01S 13/56 (2006.01); H04L 12/26 (2006.01); H04W 4/02 (2018.01); H04W 48/20 (2009.01); H04W 56/00 (2009.01); H04W 72/08 (2009.01); H04W 84/12 (2009.01); H04W 88/10 (2009.01)
CPC H04W 64/006 (2013.01) [G01S 7/527 (2013.01); G01S 13/003 (2013.01); G01S 13/04 (2013.01); G01S 13/56 (2013.01); H04L 43/0829 (2013.01); H04W 4/027 (2013.01); H04W 48/20 (2013.01); H04W 56/0025 (2013.01); H04W 64/003 (2013.01); H04W 72/082 (2013.01); H04W 84/12 (2013.01); H04W 88/10 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A Wireless Local-Area Network (WLAN) access point, comprising:
a WLAN transmitter, configured to transmit WLAN packets, comprising both communication packets and channel-sounding packets, via one or more transmit antennas, and to send a timing-synchronization signal over an internal interface;
a WLAN receiver, configured to receive, via one or more receive antennas, echo packets comprising reflections from an object of a selected subset of the WLAN packets transmitted by the WLAN transmitter, to receive the timing-synchronization signal from the WLAN transmitter over the internal interface, and to time-synchronize the echo packets and the corresponding WLAN packets using the timing-synchronization signal; and
a processor, configured to estimate one or more parameters of the object based on the channel-sounding packets and on the time-synchronized echo packets corresponding to the channel-sounding packets, and to output the estimated parameters to a user.