System and method for using geographical location to determine when to exit an existing wireless communications coverage network

A method for determining when to exit an existing coverage network in a wireless communications device, the method comprising the steps of:

• determining a threshold boundary line;
• partitioning an area into a first zone and a second zone, the area including at least a portion of a first coverage area for the existing coverage network and at least a portion of a second coverage area for a second coverage network proximate the existing coverage network, the first zone proximate a first side of the threshold boundary line oriented toward a geographical center for the existing coverage network and the second zone proximate a second side of the threshold boundary line;
• compiling a history of geographical location data of the wireless communications device, comprising the steps of:
• supplying the wireless communications device a plurality of sample points comprising geographical positions of the wireless communications device;
• measuring a position of each sample point of the plurality of sample points with respect to the threshold boundary line;
• and,
• maintaining a running sum of the measured position of the each sample point, wherein maintaining the running sum comprises the steps of:
• decrementing the running sum for the measured position of the each sample point in the first zone;
• and,
• incrementing the running sum for the measured position of the each sample point in the second zone;
• and
• comparing the running sum to a terminal value;
• and
• exiting the existing coverage network based upon the compiled history of geographical location data.