Sensor Network Deployment based on Data Variability


  • Roberto Henriques, Instituto Superior de Estatística e Gestão de Informação da Universidade Nova de Lisboa, Campus de Campolide, 1070-312 Lisboa, Portugal
  • Rui M. Rocha, Instituto de Telecomunicações, Instituto Superior Técnico, Technical University of Lisbon, Campus IST-Taguspark, 2744-016 Porto Salvo, Portugal

Source: in Proc. CONFTELE 2009, 7th Conference on Telecommunications, May 2009


Keywords: WSN deployment, WSN coverage, SOM, Coverage variability


Deployment of sensor nodes is one of the key issues in wireless sensor networking. This issue is related with the fact that usually the number of sensor does not allow an individual deployment and, usually in these situations, sensors are randomly spread. Here we present a new method to evaluate the network sensing coverage, identifying those areas where more sensor nodes are needed. This method uses the sensed data variability to estimate a variability coverage index.
Simulation tests have shown that the calculated variability coverage index has higher values for less covered areas and for areas where the connectivity between nodes is limited. For changes in the number of nodes and in the communication range, results are biased by the existence of holes in the area.

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