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Type of publication:Article
Entered by:ichatz
TitleA Probabilistic Algorithm for Efficient and Robust Data Propagation in Wireless Sensor Networks
Bibtex cite IDRACTI-RU1-2006-34
Journal Ad Hoc Networks
Year published 2006
Month September
Volume 4
Number 5
Pages 621-635
Note Elsevier
DOI 10.1016/j.adhoc.2005.06.006
We study the problem of data propagation in sensor networks, comprised of a large number of very small and low-cost nodes, capable of sensing, communicating and computing. The distributed co-operation of such nodes may lead to the accomplishment of large sensing tasks, having useful applications in practice. We present a new protocol for data propagation towards a control center ("sink") that avoids flooding by probabilistically favoring certain ("close to optimal") data transmissions. Motivated by certain applications and also as a starting point for a rigorous analysis, we study here lattice-shaped sensor networks. We however show that this lattice shape emerges even in randomly deployed sensor networks of sufficient sensor density. Our work is inspired and builds upon the directed diffusion paradigm. This protocol is very simple to implement in sensor devices, uses only local information and operates under total absence of co-ordination between sensors. We consider a network model of randomly deployed sensors of sufficient density. As shown by a geometry analysis, the protocol is correct, since it always propagates data to the sink, under ideal network conditions (no failures). Using stochastic processes, we show that the protocol is very energy efficient. Also, when part of the network is inoperative, the protocol manages to propagate data very close to the sink, thus in this sense it is robust. We finally present and discuss large-scale experimental findings validating the analytical results.
Chatzigiannakis, Ioannis
Dimitriou, Tassos
Nikoletseas, Sotiris
Spirakis, Paul
jadhoc06-cdns.pdf (main file)
Publication ID84