Dynamic location area management scheme with combining CGA and CBI for hierarchical mobile IPv6

Abstract

Internet engineering task force (IETF) has proposed Mobile IPv6 (MIPv6) in order to offer mobility service to a mobile node. Whenever a mobile node moves another foreign network, it must register its location to the home agent and the correspondent node in MIPv6. Hierarchical MIPv6 (HMIPv6) which introduces a mobility anchor point (MAP) is the proposed protocol to reduce a frequent location registration in MIPv6. In HMIPv6, all traffics toward a mobile node must be transmitted through a MAP. In the case that there are a lot of MNs in a MAP domain, overhead for the packet process should occur in the MAP. Hence, it is necessary to keep MNs from crowding at one MAP. In this paper, we propose the dynamic location area management scheme to reduce overhead of MAP. The MN newly entering into the MAP domain selects the MAP that manages the smallest numbers of MNs. We consider packet processing time in the MAP as evaluation element. As a conclusion, our proposed scheme can reduce the average amount of time a packet spends in the MAP.