Mitigation of angle of arrival multipath variations for wireless local area network devices

A first wireless device (WD) configured to determine a confidence in angles of arrival (AOA) corresponding to communication between the first wireless device and a second wireless device using a switched beam antenna (SBA), the first wireless device comprising:

• a radio transmitter and receiver configured to:
• for each of a plurality of beam sets:
• transmit, in succession, on each beam of the beam set, a plurality of ranging signals in bursts of N transmissions, with a gap Tp between each transmission and with a wait time Tw between each burst;
• and
• receive, in succession, on each beam of the beam set, a plurality of response signals;
• and
• processing circuitry configured to:
• for each of the plurality of beam sets, determine an AOA of a beam among the beams of the beam set for which a highest average signal strength of response signals is received, together with a time t, and a location and heading of the WD;
• and
• determine an AOA set of zero or more of the determined AOAs for the plurality of beam sets received in a time interval T;
• when the AOA set includes at least a number M of AOAs and the WD is in motion, compare a standard deviation of the AOAs in the AOA set to a threshold, Dmax, where M is greater than or equal to four;
• and
• when the standard deviation of the AOAs in the AOA set is less than the threshold Dmax, report each of at least one AOA in the AOA set together with an associated confidence level, the associated confidence level being based at least in part on the standard deviation of the AOA set.