Patent ID: 6591112
Filing Date: 2003-07-08
Classification: G08G,H04W

Abstract:
A system for dispatching a response unit in response to a request from a requesting entity, said system comprising:a terminal device attached to said requesting entity comprising at least a location tracking device, a wireless communication device, and a computer, said terminal device having the ability to uniquely identify itself and its location over a wireless communication network to a remotely located service operator; a service operator connected to said wireless communication network having attached to it relevant information relating to said requesting entity, said service operator receiving said request from said requesting entity; said service operator interpreting said received request, authenticating said requesting entity and calling a service dispatch center with directions to call a response unit, said response unit having attached to it a terminal unit having the ability to uniquely identify itself and its location to a remotely located service operator; said service dispatch center transmitting to said service operator a first acknowledgement message following first contact with said response unit, said first acknowledgement message including a unique identifier code of said response unit; said service operator transmitting back to said requesting entity said first acknowledgement message; said service operator further initiating contact with said response unit and determining its location; and said system using said determined location to compute an Expected Time of Arrival at the location of said requesting entity and transmitting said Expected Time of Arrival to said requesting entity.