SNMP information based routing mechanism for fast handoff in mobile IP

摘要

The focus of our research is to make QoS guaranteed in mobile IP. QoS in mobile IP is important to provide multimedia and real-time applications services in mobile environment, and it is closely related to the handoff delay. Therefore, handoff delay problem is actively studied to guarantee QoS in mobile IP research area. In this paper, to resolve such a problem, we suggest SNMP information-based hierarchical routing that adds keyword management method to Information-based hierarchical routing in active network, and then we suggest QoS controlled handoff by SNMP information-based hierarchical routing. To prove the QoS improvement in our approach, we model the suggested handoff and simple handoff after setting up routing convergence time, and then simulations were carried and using NS-2. The simulation results of handoff optimization that was proposed in this paper show that it improved throughput and reduced application traffic avoiding handoff delay caused by triangle routing problem. Therefore, the result of experiment validate that propose mechanism performs fast handoff and improves QoS by reducing handoff delay. As a further research, we are trying to improve QoS of packet that is transmitted through both hierarchical wired nodes and hierarchical wireless nodes using proposed mechanism in this paper, when ad hoc network forms with many mobile nodes.