An Improved Mobile IP Scheme Based on MobiCast

MobiCast is a mobile IP multicast algorithm which is used in the scene of small-scale wireless beehive network, it ensures the lowest packetpsilas lost rate when mobile node handovers in the same domain after introducing the concept of domain and domain foreign agent (DFA). Based on MobiCast, An improved scheme is proposed in this paper which introduces ldquoTunnel-schemerdquo between DFA(s) in neighboring domains, and new DFA registers to the multicast group in advance. Moreover, the ware of conform packets is introduced to resolve out of order and reconstruction of multicast packets. Simulation results based on Network Simulator Version 2 show that the improved scheme can reduce the packetpsilas lost rate, the whole handover delay in maximum and enhance the throughput, thereby, it can improve the performance and quality of service of the network as a whole when mobile node handovers between neighboring domains.