A MAP Changing Scheme Using Virtual Domain for Mobile IPv6 Networks

Hierarchical Mobile IPv6 (HMIPv6) supports micro-mobility within a domain and introduces a new entity, namely mobility anchor point (MAP) as a local home agent. However, HMIPv6 has been found to cause load concentration at a particular MAP and longer handover latency when inter-domain handover occurs. In order to solve such problems, this paper establishes a virtual domain (VD) of a higher layer MAP and proposes a MAP changing scheme. The mobile node (MN) changes the routing path between a, MN and a correspondent node (CN) according to the mobile position and the direction of the MN before inter-domain handover occurs. The MAP changing scheme enables complete handover by using binding-update of the on-link care of address (LCoA) when inter-domain handover occurs. In addition, the concentrated load of a particular MAP is distributed as well. We simulate the performance of the MAP changing scheme and compare it with HMIPv6.