US Patent 9854396 Monitoring movement transitions via cellular network data

Systems and methods for receiving cellular network data including a plurality of device identifiers and, for each of the plurality of device identifiers, determining a first cell border crossing associated with a device identifier, determining a second cell border crossing associated with the device identifier, determining a speed of movement of the device associated with the device identifier between the first cell border crossing and the second cell border crossing, determining, based on the speed of movement of the device, that a movement transition for the device associated with the device identifier has occurred between a first movement category and a second movement category, and storing movement data related to the movement transition and associated with a location of the device associated with the device identifier.