Abstract

IMT-2000 technologies are divided 3G packet data system that using mobile IP and GPRS that based on the GSM networks. These tech-nologies push introduce mobile IP to support seamless roaming. In mobile IP environments, use AAA server such as RADIUS or DIAMETER to provide authentication service for dial-up computers. This factor is important for mobile nodes. Mobile IP require strong authentication between mobile nodes and home agents. We propose application of AAA protocols for smooth handoff mechanism in IMT-2000 environments.

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