Improving Performance of Ad Hoc On-demand Distance Vector (AODV) Routing Protocol in Wireless Sensor Network

Ad hoc On-Demand Distance Vector (AODV) is a routing protocol for mobile ad hoc networks (MANETs) and other wireless ad hoc networks. This paper attempts to modify AODV to enhance network performances on wireless sensor network (WSN). The main idea of modified AODV is using multi metrics in route decision instead of single hop count metric. The modified AODV considers energy factor and node lifetime in route decision in order to maintain the connectivity of the network as long as possible. Simulation results conducted in network simulator (NS-2) prove that the effectiveness of modified AODV in terms of throughput, average end-to-end delay, routing overhead, dropped packet ratio and energy consumption and so on. There is significant decrease in average end to end delay, control overhead and dropped packet ratio by using modified AODV protocol under the varying traffic load