A Study on Authentication/Authorization/Accounting and Roaming Mechanism in Pervasive Environment

As the Internet and networks advance, the combination of wired/wireless technologies is spreading rapidly, since it enables the creation of new services, and provides new features to both users and service providers. In such wired/wireless integrated services, network integration is very important, because such systems are integrated by links between heterogeneous networks, and they involve an integration of transmission technologies across networks. In this situation, existing security and communication technologies are unsuitable, since networks are integrated with heterogeneous networks. The network may have several security flaws. Also, services available will be services for roaming users. In these services, we must provide fast authentication and security for roaming. Therefore, in this paper we proposed roaming and AAA mechanisms in heterogeneous network environments. Our system provides secure communication and efficiency.