System and method for deploying an RTT-based indoor positioning system

A method for identifying APs that provide reliable signaling, the method comprising:

• obtaining a first set of distance data and a second set of distance data, wherein each of the sets represents multiple calculated distances from an access point (AP), wherein the multiple calculated distances of the first set and the multiple calculated distances of the second set are calculated based on a round trip time (RTT) information derived from communications with the AP at a first location within the indoor area, and at a second location within the indoor area, respectively;
• calculating a first variability metric as a measure of consistency of the multiple calculated distances of the first set;
• calculating a second variability metric as a measure of consistency of the multiple calculated distances of the second set;
• determining, based on the first variability metric and the second variability metric, that a RTT reliability condition is satisfied with respect to the AP;
• and
• identifying the AP for a RTT-based location determination.

An apparatus for identifying access points (APs) that provide reliable signaling, the apparatus comprising:

• a processor configured to:
• obtain a first set of distance data representing multiple calculated distances between a first access point (AP) and a mobile device in an indoor area, wherein the multiple calculated distances are calculated based on a round trip time (RTT) information derived from communications with the first AP at multiple locations of the mobile device within the indoor area;
• obtain a distance threshold for the indoor area, wherein the distance threshold is based on dimensions of the indoor area;
• determine, based on the first set of distance data and the distance threshold, that a reliability condition is satisfied with respect to the first AP;
• and
• in response to determining that the reliability condition is satisfied with respect to the first AP, identifying the first AP for a RTT-based location determination;
• and
• a memory coupled to the processor.

An apparatus for identifying access points (APs) that provide reliable signaling, the apparatus comprising:

• a processor configured to:
• obtain a first set of distance data and a second set of distance data, wherein each of the sets represents multiple calculated distances from an access point (AP), wherein the multiple calculated distances of the first set and the multiple calculated distances of the second set are calculated based on a round trip time (RTT) information derived from communications with the AP at a first location within an indoor area, and at a second location within the indoor area, respectively;
• calculate a first variability metric as a measure of consistency of the multiple calculated distances of the first set;
• calculate a second variability metric as a measure of consistency of the multiple calculated distances of the second set;
• determine, based on the first variability metric and the second variability metric, that a RTT reliability condition is satisfied with respect to the AP;
• and
• identify the AP for a RTT-based location determination;
• and
• a memory coupled to the processor.