System and method for geographically locating a cellular device

摘要

A method of monitoring traffic flow by determining successive locations of a plurality of cellular devices located in a plurality of vehicles, the method comprising: repeatedly determining the location of at least some of the plurality of cellular devices; and sampling the locations of the at least some of the cellular devices to determine a present picture of traffic flow; wherein determining the location of a cellular device of the plurality comprises determining the area in which handover from a first cell to a second cell occurs, the handover determination being based on: modeling at least a portion of a cell reception area of said first cell and said second cell; and defining the handover area to comprise overlapping portions of said first and second cell areas.