Mobile IP is such a protocol that provides the mobility support in the Internet. However, even with some proposed optimization techniques, there are still some drawbacks in regard to improve its performance. In this paper, a novel bit map indexing scheme has been represented to improve the performance. In this scheme, each mobile node can be shifting to a foreign network which is associated with the Register Buffer by using bit map indexing method. A sender sends packets to the receiver which is stored further in the Register Buffer so that it could reach to the destination. During handoff, a mobile node could decide whether to move its buffer and report the handoff to the home agent, or, simply report the handoff to the buffer. In this way, this scheme optimizes the burden on the home agent so that the total cost of message delivery and mobility management can be mitigated. To evaluate the performance of the proposed scheme, a performance model has been developed, considering two way models for mobile nodes along with a proposed iterative algorithm for deriving a minimal point where the minimum cost parameter has been achieved. The results show that the new scheme can enable Mobile IP route optimization with proper handoff extension, irrespective of number of packets received during each shift.

The Register Buffer performance evaluation Mobile IP optimized output and simulation