A New Prioritized Fast Handoff Protocol for Mobile IP

Mobile IP protocol has been designed to handle global and seamless user’s mobility on the Internet. However, Mobile IP suffers from handoff latency due to slow handoff discovery and binding association notification. To reduce this latency, we propose a new handoff protocol where we attribute a high priority to registration request datagrams. As a result, each router prioritizes this datagram whenever received, which reduces the round-trip delay of the registration request. Using a queuing model, we present an analytical model for handoff latency for both mobile IP protocol and our new scheme. Then, we conduct several simulations to compare and contrast the two handoff protocols. Our analytical study and simulation results provide a significant decrease of handoff latency in our handoff protocol compared to mobile IP handoff.