Patent ID: 6842462

Claim:
A network for providing a mobile device with wireless access to an external network, said network comprising: at least one base station comprising a base station controller having a General Packet Radio Service (GPRS) address accessed utilizing a first protocol, and one or more base transceiver stations interconnected with said base station controller, each of said base transceiver stations providing an air interface to a mobile device; one or more interworking entities, each entity using a GPRS address and accessed utilizing said first protocol and having an Internet Protocol (IP) address and accessed utilizing a second protocol and interconnected to one or more base stations including the at least one base station and comprising a receiver for receiving a message in the first protocol and for receiving a message in the second protocol, a processor for translating said message in said first protocol into a corresponding message in said second protocol and for translating said message in said second protocol into a corresponding message in said first protocol, said processor mapping said GRPS address to an Internet Protocol (IP) address and mapping said IP address to said GPRS address, and a transmitter for transmitting said corresponding message in said first protocol and for transmitting said corresponding message in said second protocol; a router interconnected with each of said interworking entities, said router having an IP address and accessed utilizing said second protocol, said router providing a connection to an external network and providing mobility support for a mobile device according to said second protocol, said router further comprising a Dynamic Host Configuration Protocol server for assigning a dynamic address of said IP address to said mobile device, and a home IP agent; and a home location register/authentication center interconnected with said router, said home location register/authentication center providing authentication, registration and encryption for said mobile device attached to the at least one base station wherein said base station, interworking entities and router comprise a first domain and are operable to update associated routing tables utilizing path setup messages said center further and assigning a dynamic address of said GPRS address to said mobile device when said mobile device first attaches to said network.