Date Added: Nov 2009
Hacking and threats are increasing with the enhanced population of wireless traffic. Authentication of mobile subscribers and network is an extremely challenging issue to the researchers. Now mobile communication system (3-G or advanced) has been developed to speed up the data communication. 3-G mobile communications use 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 communications use packet switching process through PDSN (Packet Data Serving Node) servers.