Angle of arrival of wireless local area network devices using a switched beam antenna

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 first WD comprising:

• processing circuitry configured to identify 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;
• an RF transmitter configured to transmit, in succession, a burst of ranging packets on each second beam;
• and
• an RF receiver configured to receive, for each transmission on a second beam, a burst of response packets transmitted by the second WD in response to the burst of ranging packets;
• wherein the processing circuitry is further configured to:
• for each transmission on a second beam:
• compare each received response packet to a reference sequence to generate a plurality of correlation values corresponding to the burst of response packets;
• and
• determine 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;
• select a second beam from the plurality of second beams with a corresponding highest one of the first metric values;
• and
• determine an AOA for the selected second beam.