Dynamic Timer Based on Expected Link Duration in Mobile Ad Hoc Networks

In this paper, we present a new scheme to adjust Hello_timer and Neighbor_Hold_timer interval to improve the performance of routing protocol. Unlike the dynamic timer schemes, the proposed scheme decides Neighbor_Hold_timer first according to expected link duration. Subsequently, the Hello_timer is set to minimum the expected link duration among neighbor nodes. The simulation results in the AODV protocol are given to demonstrate that the packet delivery ratio, end-to-end delay and control overhead are improved rather than existing dynamic timer scheme.