Date Added: Jun 2010
Hacking and threats are increasing day by day. Authentication of mobile subscribers and network is an important criterion to the researchers. Now mobile communication system (3-G or advanced) has been developed to speed up the data communication. 3-G mobile communication uses two different switching techniques: circuit switching for voice and low speed data communications, and packet switching mainly for data communication, but can afford voice communication like VoIP (Voice Over Internet Protocol), video telephony, multimedia service etc., Generally high-speed data communication uses packet switching process through PDSN (Packet Data Serving Node) servers. In circuit switching (3-G network), authentication is mutual where both MS and MSC or network authenticate each other, but in packet switching only network (servers in PDSN) examines the authenticity of MS.