An Approach towards Improving the Lifetime and Security in Wireless Sensor Network

Abstract — A Wireless Sensor Network (WSN) is a collection of wireless sensor nodes forming a temporary network without the aid of any established infrastructure or centralized administration. In such an environment, due to the limited range of each node’s wireless transmissions, it may be necessary for one sensor node to ask for the aid of other sensor nodes in forwarding a packet to its destination, usually the base station. One important issue when designing wireless sensor network is the routing protocol that makes the best use of the severely limited resource presented by WSN, especially the energy limitation. Another important factor is providing as much security to the application as possible. In this project, an energy efficient secure node disjoint multipath routing protocol for wireless sensor networks is proposed. Here, the data packets are transmitted in a secure manner by using the digital signature crypto system. Multipath routing protocols enhance the lifetime of the wireless sensor networks by distributing traffic among multiple paths instead of a single optimal path. The protocol guarantees loop freedom and disjointness of alternate path. We have compared the performance of this protocol with an ad hoc on-demand multipath distance vector routing protocol. To evaluate performance of proposed method, we have used parameters packet delivery ratio, energy consumption, routing overhead and throughput compare to the ad hoc on-demand multipath distance vector routing