Dynamic Reverse Geofencing

摘要

A system and method for determination the relative location of a mobile object is described that includes building a database of known/expected locations with the exact longitude and latitude for each location. Next, an estimated location for a mobile object is generated using information from the cellular network and an area boundary is defined around the mobile object that defines, with some probability, where the object is actually located. The known locations in the database that fall within the area boundary are then identified and a relative probability is calculated for each known location that indicates its relative likelihood of where the mobile object is actually located. From this information at least the most probable location of the mobile object is determined along with a measure of estimation confidence.

主权项

1. A method of determining the relative location of a mobile object, the method comprising:
receiving an estimated location for the mobile object from the mobile object, the mobile object using a location determination mechanism to approximate its estimated location; defining a reverse geofence boundary around the estimated location of the mobile object, the reverse geofence boundary defining an area where the mobile object is located; identifying a set of known locations within the reverse geofence boundary from a database of known locations; calculating a relative probability for each known location in the set of known locations that indicates a relative likelihood of where the mobile object is actually located; and determining the most probable location of the mobile object based on the calculations.