Antenna selection procedure for time of arrival estimation

A method for wireless communication at a first wireless device, comprising:

• receiving one or more packets from a second wireless device;
• measuring one or more time of arrival (ToA) quality metrics associated with each of the one or more packets for each of two or more antennas of the first wireless device;
• selecting one or more candidate antennas from the two or more antennas for a ToA measurement based at least in part on a candidate metric of each of the one or more candidate antennas, the candidate metric for each of the one or more candidate antennas based at least in part on the one or more ToA quality metrics and one or more prior ToA quality metrics from within a time window prior to receipt of the one or more packets;
• determining that a first antenna of the one or more candidate antennas has an earliest ToA for the one or more packets;
• and
• switching to the first antenna for the ToA measurement associated with the second wireless device based at least in part on the candidate metric of the first antenna exceeding a prior ToA quality metric of a different antenna of the two or more antennas by at least a threshold value.

A first wireless device for wireless communication, comprising:

• means for receiving one or more packets from a second wireless device;
• means for measuring one or more time of arrival (ToA) quality metrics associated with each of the one or more packets for each of two or more antennas of the first wireless device;
• means for selecting one or more candidate antennas from the two or more antennas for a ToA measurement based at least in part on a candidate metric of each of the one or more candidate antennas, the candidate metric for each of the one or more candidate antennas based at least in part on the one or more ToA quality metrics and one or more prior ToA quality metrics from within a time window prior to receipt of the one or more packets;
• means for determining that a first antenna of the one or more candidate antennas has an earliest ToA for the one or more packets;
• and
• means for switching to the first antenna for the ToA measurement associated with the second wireless device based at least in part on the candidate metric of the first antenna exceeding a prior ToA quality metric of a different antenna of the two or more antennas by at least a threshold value.