Energy Efficient Aggregation Algorithm for Wireless

-The wireless sensor network is to provide the users with access to the information of interest from data gathered by spatially distributed sensors. Generally the users require only certain aggregate functions of this distributed data. Computation of this aggregate data under the end-toend information flow paradigm by communicating all the relevant data to a central collector node is a highly inefficient solution for this purpose. An alternative proposition is to perform in network computation. In this paper, we have presented an energy efficient aggregation algorithm for WSNs that is secure and robust against malicious insider attack by any compromised or faulty node in the network. In contrast to the traditional snapshot aggregation approach in WSNs, a node in the proposed algorithm instead of unicasting its sensed information to its parent node, broadcasts its estimate to all its neighbors. The simulations conducted on the proposed algorithm have produced results that demonstrate its effectiveness. Index Terms -Wireless Sensor Networks (WSN), data aggregation algorithm, In-network computation, distributed estimation, Optimization of Communication, protocols, security. ————--——————  ——————————