A Hop-Based Routing Scheme for MANETs

We propose a new scheme to reduce route discovery latency for reactive routing protocols, named HOp-based adaptive reduction (HOBAR). In the route discovery phase of reactive routing protocols, source nodes spend extra waiting time to get optimal routes after receiving the first route reply. Our scheme appropriately sets this waiting time period depending on the number of hops in the first route reply. Our simulation results show that HOBAR offers fewer hop routes, significantly reduces route discovery latency, and is more scalable in highly loaded and large networks.