Patent ID: 6775285
Filing Date: 2004-08-10
Classification: H04L,H04W

Abstract:
For use in association with a wireless network comprising a plurality of base stations capable of communicating with a plurality of mobile stations, an interworking function unit capable of transferring data between said wireless network and an Internet protocol (IP) data network coupled to said wireless network, said interworking function unit comprising:a protocol conversion controller capable of receiving from said wireless network a first plurality of data packets, wherein said first plurality of data packets are generated by a first one of said plurality of mobile stations and are formatted according to a first protocol associated with said wireless network, and converting said first plurality of data packets to a plurality of IP data packets formatted according to an Internet protocol associated with said IP data network; and a first security controller for preventing unprovisioned mobile stations from accessing said IP data network through said wireless network, wherein said first security controller is capable of receiving at least one of said plurality of IP data packets and replacing an original IP packet header of said at least one IP data packet with a replacement IP packet header comprising an IP address of a selected one of at least one provisioning server coupled to said IP data network and controlled by an operator of said wireless network.