Opportunistic data collection in sparse wireless sensor networks

  • Authors:

  • Jorge M. Soares;Mirko Franceschinis;Rui M. Rocha;Wansheng Zhang;Maurizio A. Spirito

  • Affiliations:

  • Instituto Superior Técnico, Technical University of Lisbon, Porto Salvo, Portugal;Pervasive Radio Technologies Lab, Istituto Superiore Mario Boella, Torino, Italy;Instituto Superior Técnico, Technical University of Lisbon, Porto Salvo, Portugal and Instituto de Telecomunicações, Lisboa, Portugal;Dipartimento di Elettronica, Politecnico di Torino, Torino, Italy;Pervasive Radio Technologies Lab, Istituto Superiore Mario Boella, Torino, Italy

  • Venue:
  • EURASIP Journal on Wireless Communications and Networking - Special issue on opportunistic and delay tolerant networks
  • Year:
  • 2011

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Abstract

Opportunistic wireless sensor networks (WSNs) have recently been proposed as solutions for many remote monitoring problems. Many such problems, including environmental monitoring, involve large deployment scenarios with lower-than-average node density, as well as a long time scale and limited budgets. Traditional approaches designed for conventional situations, and thus not optimized for these scenarios, entail unnecessary complexity and larger costs. This paper discusses the issues related with the design and test of opportunistic architectures, and presents one possible solution--CHARON (Convergent Hybrid-replication Approach to Routing in Opportunistic Networks). Both algorithm-specific and comparative simulation results are presented, as well as realworld tests using a reference implementation. A comprehensive experimental setup was also used to seek a full characterization of the devised opportunistic approach including the derivation of a simple analytical model that is able to accurately predict the opportunistic message delivery performance in the used test bed.