Area throughput and energy consumption for clustered wireless sensor networks

Authors:
Flavio Fabbri;Janne Riihijärvi;Chiara Buratti;Roberto Verdone;Petri Mähönen
Affiliations:
WiLAB, DEIS, University of Bologna, Italy;Department of Wireless Networks, RWTH Aachen University, Aachen, Germany;WiLAB, DEIS, University of Bologna, Italy;WiLAB, DEIS, University of Bologna, Italy;Department of Wireless Networks, RWTH Aachen University, Aachen, Germany
Venue:
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Year:
2009

Citing 3
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Abstract

In this paper we present a mathematical approach to evaluate the area throughput and the energy consumption of a multi-sink Wireless Sensor Network (WSN). The WSN is organised into clusters, with one sink per cluster collecting data from sensors. A small variation of the Thomas point process is used to model sensors and sinks positions in the target area. We denote as area throughput the amount of samples per second successfully transmitted to the sinks. Both area throughput and energy consumption are strictly related to connectivity and MAC issues. The aim of this work is to devise a mathematical model that takes MAC and connectivity issues into account, under a common framework. We study the behavior of these two performance metrics when varying the target rate, defined as the maximum number of samples the network was deployed to deliver. Results show that a tradeoff between the area throughput and the energy consumption must be found. Finally, the impact of different sensors and sinks distributions on the area throughput is evaluated.