Prefetching Technique for Multipath Routing In Manets

Mobile Ad-hoc networks (MANETs) are a wireless network without any centralised infrastructure. The routing protocols are used in finding feasible path between source and destination. Two main routing protocol techniques are Proactive and Reactive. Proactive routing protocol maintains routing table for every node in the entire network. Reactive protocols use route information only when required. In reactive routing, multipath routing protocol like AOMDV has produced valuable results in routing but it uses flooding scheme to find more routes. Due to more flooding, we proposed a Prefetching technique in AOMDV routing protocol in order to reduce the amount of flooding technique. Hence, it reduces the routing overhead. To achieve efficiency of routing, this algorithm involves two steps: First, to timestamp the route entry based on the mobility of nodes. Second, it initiates the counter value in order to access the frequently used entries in route entry table when the respective route is at the time of expiring. Simulation carried out has shown that the technique is more efficient than on demand routing protocols.