Power Management and Reducing Routing Overhead and Delay in Wireless Sensor Network with Modified Ad- hoc on Demand Distance Vector Routing Protocol Using

Power management is necessary in Wireless Sensor Network because the nodes are very small in size having a small battery and that too of limited life. The routing algorithms for WSN should satisfy the features of energy consumption optimization and extension of network lifetime. We choose to modify AODV (Ad hoc On Demand Distance Vector) routing protocol, analyze this algorithm named as modified AODV-TP (Threshold Power) and is highlighted in detail. The theme is that only those nodes are chosen as neighbors of nodes during RREQ (Route Request) phase that are directed towards destination. Also, threshold is set for all the nodes. If the power of the node is less than threshold, it will not acknowledge the Route Reply (RREP) packet. The alternate route with second lowest minimum distance will be selected to forward the packet. The behavioral analysis of the modified protocol is compared to AODV-TP and from the simulation this protocol turns out to be better in terms of power conservation