US 12,228,659 B2
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 Jul. 11, 2024, as Appl. No. 18/770,468.
Application 18/770,468 is a continuation of application No. 18/583,272, filed on Feb. 21, 2024, granted, now 12,066,555.
Claims priority of provisional application 63/491,649, filed on Mar. 22, 2023.
Prior Publication US 2024/0361416 A1, Oct. 31, 2024
Int. Cl. G01S 3/04 (2006.01)
CPC G01S 3/043 (2013.01) 20 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:
identifying a first beam having a first width and a sector of beam coverage from which the first WD transmits ranging packets and the second WD returns response packets, the sector of beam coverage of the first beam comprising a plurality of second beams pointing in different directions, each second beam being narrower than the first beam;
transmitting in succession, via the first WD, a burst of ranging packets on each second beam;
for each transmission on a second beam:
receiving a burst of response packets transmitted by the second WD in response to the burst of ranging packets;
comparing each received response packet to a reference sequence to generate a plurality of correlation values corresponding to the burst of response packets; and
determining a first metric value based on the plurality of correlation values so that each second beam in the plurality of second beams is associated with a corresponding first metric value;
selecting a second beam from the plurality of second beams with a corresponding highest one of the first metric values; and
determining an AOA for the selected second beam.