Patent ID: 8335486

Claim:
A method of operating a Position Determining Equipment (PDE) system, the method comprising: in a PDE, receiving location queries for a plurality of wireless communication devices, determining geographic location data for the wireless communication devices using a plurality of different position fix types, and transferring the geographic location data for the wireless communication devices; in the PDE, determining location session data indicating cumulative session time for each of the different position fix types during a sample period; in a PDE data processing system, adding the cumulative session time for each of the different position fix types during the sample period to determine a total session time for all of the position fix types during the sample period; and in the PDE data processing system, dividing the total session time for all of the position fix types during the sample period by the total time of the sample period to determine an indicator of average concurrent use of the PDE during the sample period.