Detection and use of asymmetric signal-strength transition as indication of location uncertainty

A wireless communication device (WCD) configured to detect and report location uncertainty due to asymmetric signal-strength transition, the WCD comprising:

• a wireless communication interface configured to receive pilot signals from base stations;
• and
• a controller configured to monitor signal strength of the received pilot signals, to detect an asymmetric signal-strength transition of the WCD, and, responsive to at least detecting the asymmetric signal-strength transition of the WCD, to report location-uncertainty to a network entity,
• wherein, while the WCD is being served by a first base station and not by a second base station, the wireless communication interface receives a first pilot signal from the first base station and a second pilot signal from the second base station, and the controller determines, based on the monitoring, that first pilot signal has a first pilot strength, that the second pilot signal has a second pilot strength, and that the second pilot strength is not sufficiently stronger than the first pilot strength to trigger handover of the WCD from being served by the first base station to being served by the second base station,
• wherein detecting the asymmetric signal-strength transition comprises (i) detecting, based on the monitoring, a decrease in the first pilot signal strength and an absence of a corresponding proportional increase in the second pilot strength, to a point that the second pilot strength becomes sufficiently stronger than the first pilot strength to trigger handover of the WCD from being served by the first base station to being served by the second base station, and (ii) detecting that, due to the second pilot strength thereby becoming sufficiently stronger than the first pilot strength, the WCD has handed over from being served by the first base station to being served by the second base station, and
• wherein reporting location-uncertainty to the network entity comprises transmitting to the network entity an indication that location of coverage of the second base station is an uncertain representation of location of the WCD.