Robust data aggregation, encryption and data transfer in UWSNs

Wireless sensor networks are very popular now a days. They affect each and every aspect of our life. Most important use of sensor node is in Defense areas. Data transfer in Defense areas are very crucial issue in Defense. Sensor nodes are ad-hoc network consists of very small devices having limited energy and capacity with fixed transmission power. Recharging cost of these sensor nodes is very high. So main aim of researchers are to increase network lifetime. We use the aggregation concept to aggregate data from all sensor nodes at tier head. Aggregated data transfer consumes less energy. Apart from the energy and lifetime issue security during Data transfer is very crucial issue. To provide security we proposed an encryption technique, Sensor node sense data from nearby environment and send this data to the neighbor node with proposed encryption technique after that data aggregation will take place on encrypted data received by tier head node. Then it will send data to the BS. Routing technique used is Reliable energy efficient routing for UWSNs [10].