CELLULAR PHONE USING VOICE COMMUNICATION FOR REQUESTING LOCATION SERVICES

摘要

A novel method of and system for enabling the use of one portable cellular phone only in voice communication over a radio voice channel with a cellular network control center for voice-requesting position or location data or oth er services; and, with the aid of a vehicle GPS-transponder activated in respon se to signalling from the control center over a separate radio-data channel pat h, to receive and process at the vehicle GPS location, data from satellites, an d to transmit the location data over the said data control path to the control center; and for then sending such data and information therefrom to the user of the portable cellular phone - the system being also adaptable for use by dispatcher managers of fleets of vehicles.