Threshold-Based Registration (TBR) in Mobile IPv6

The underlying principles of IETF Internet Draft, Mobility Support in IPv6, make it possible to employ some mechanisms to improve handoff smoothness, to maintain optimized data transfer route, at the mean time without requiring any special support from the network side. Such mechanisms were introduced and examined in this paper together with the proposal of Threshold-Based Registration in Mobile IPv6. In this proposal, a mobile node will establish immediate forwarding from the previous care-of address whenever it moves to another subnetwork. After every fixed number of immediate forwarding steps, the mobile node will establish direct forwarding from its primary care-of address. Again, after every fixed number of direct forwarding steps, the mobile node will register a new primary care-of address to its home agent. With such an approach, the above mentioned goals are achieved.