A Low Overhead Reachability Guaranteed Dynamic Route Discovery Mechanism for Dense MANETs

A crucial issue for a mobile ad hoc network is the handling of a large number of nodes. As more nodes jointhe mobile ad hoc network, contention and congestion are more likely. The on demand routing protocolswhich broadcasts control packets to discover routes to the destination nodes, generate a high number ofbroadcast packets in a larger networks causing contention and collision. We propose an efficient routediscovery protocol, which reduces the number of broadcast packet, using controlled flooding technique. The simulation results show that the proposed probabilistic flooding decreases the number of controlpackets floating in the network during route discovery phase, without lowering the success ratio of pathdiscoveries. Furthermore, the proposed method adapts to the normal network conditions. The results showthat up to 70% of control packet traffic is saved in route discovery phase when the network is denser.