Data-value Aware Cascading Time-out for Informnation Aggregation in WSN

Information aggregation in Wireless Sensor Networks provides for energy-efficiency for energy-constrained nodes to increase life-time of the network. This is achieved by processing data as it flows from information sources to sinks. The decision of when to "clock out" data as it is processed by nodes has significant performance impact in terms of energy-efficiency, data accuracy and freshness. Solis et al. have proposed `Cascading timeout\´ in [1]. In this paper, we propose cascading timeout that is aware of the value or significance of data to be sent. By simulation results we show that this scheme achieves energy efficiency while keeping data accuracy same.