US 12,066,555 B1
Angle of arrival of wireless local area network devices using a switched beam antenna
Ryan Busser, Fort Lauderdale, FL (US); Graham K. Smith, Boca Raton, FL (US); Mark Passler, Boca Raton, FL (US); and Phillip Louis Roccapriore, Fort Lauderdale, FL (US)
Assigned to SR Technologies, Inc., Sunrise, FL (US)
Filed by SR Technologies, Inc., Sunrise, FL (US)
Filed on Feb. 21, 2024, as Appl. No. 18/583,272.
Claims priority of provisional application 63/491,649, filed on Mar. 22, 2023.
Int. Cl. G01S 3/04 (2006.01)
CPC G01S 3/043 (2013.01) 22 Claims
OG exemplary drawing
 
1. A method in a first wireless device (WD) configured with a switched beam antenna (SBA), for determining an angle of arrival (AOA) corresponding to communication between the first WD and a second WD, the method comprising:
transmitting successive bursts of ranging packets, a number of ranging packets in a burst of ranging packets;
receiving, in succession, a first burst of response packets in each beam of a first set of beams, the first burst of response packets being transmitted by the second WD in response to a first burst of ranging packets;
determining a first beam of the first set of beams associated with a highest average received signal strength of the first bursts of response packets;
receiving, in succession, a second burst of response packets in each beam of a second set of beams, the second burst of response packets being transmitted by the second WD in response to a second burst of ranging packets, each beam of the second set of beams being narrower than the determined first beam and being directed within an angular sector of the determined first beam;
selecting the selected beam from the second set of beams, the selected beam being associated with a highest average received signal strength of the second bursts of response packets; and
determining an AOA of the selected beam.