Highly accurate event detection makes Wireless Sensor Networks popular for real time monitoring applications. Wireless sensor systems that monitor physical and environmental conditions are expected to be deployed with high density, a situation which leads to spatial correlations and redundancy of the collected data. Eliminating these redundancies extends the network lifetime by reducing energy consumption and enhances the velocity of transmitting emergency and periodic messages. In this work, we focus on the scenario where sensors are grouped into clusters. Each Cluster Head (CH) receives samplings from its Cluster Members (CMs), and decides when it should stop sampling, and starts transmitting the resulting packet from the aggregation process in order to reduce the end-to-end delay and ensure the accuracy of the transmitted data. To this end, we propose a cluster based aggregation scheme which determines, at the CH level, the best timing for achieving a short delay, and provides an efficient buffer management strategy for maintaining low energy consumption. Evaluation results based on simulations show that our scheme achieves a good trade-off between energy consumption and end-to-end delay.
|Title of host publication
|2014 IFIP Wireless Days, WD 2014
|Luis Henrique Maciel Kosmalski Costa, Miguel Elias Mitre Campista, Artur Ziviani, Cigdem Sengul, Jose-Marcos Nogueira, Josep Domenech, Marcelo Goncalves Rubinstein, Pedro Braconnot Velloso, Igor Monteiro Moraes
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - 26 Jan 2015
|7th IFIP/IEEE Wireless Days Conference - Rio de Janeiro, Brazil
Duration: 12 Nov 2014 → 14 Nov 2014
Conference number: 7
|IFIP Wireless Days
|7th IFIP/IEEE Wireless Days Conference
|Rio de Janeiro
|12/11/14 → 14/11/14