Authentication, authorisation and access control in mobile systems

Converging networks and mobility raise new challenges towards the existing Authentication, Authorisation and Accounting (AAA) systems. Focus of the research is towards integrated solutions for seamless service access of mobile users. Interworking issues between mobile and wireless networks are the basis for detailed research on handover delay, multi-device roaming, mobile networks, security, ease-of-use and anonymity of the user. This chapter provides an overview over state-of-the-art in authentication for mobile systems, and suggest extending AAA-mechanisms to home and community networks, taking into account security and privacy of the users