AAA를 이용한 Hierarchical MIPv6에서의 인증 방안

Abstract

HMIPv6(Hierarchical Mobile IPv6) has been introduced to reduce the amount of messages and its latency for mobility service in visited domain when a mobile node moves from and to the subnets in the visited domain. In prior to any mobility message exchanges, the authentication should be completed successfully by the cooperation of the servers in home and visited domain. The long-deferred authentication brings about the latency of mobility service and is critical for the sessions requiring the real time processing. This paper proposes the scheme for providing the authentication service in a local domain with maintaining the design rationale of HMIPv6. Accepting the design logic of HMIPv6, the proposed scheme is able to reduce the overall service latency by reducing the authentication time. To materialize the idea, we analyze the authentication cost by considering the factors of the number of mobile node and its traffic properties. As a result, it shows the cost improvement of reducing the cost up to 57 percent in comparing with general authentication method.