Publications:Handling Failures of Static Sensor Nodes in Wireless Sensor Network by Use of Mobile Sensors

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Title Handling Failures of Static Sensor Nodes in Wireless Sensor Network by Use of Mobile Sensors
Author Edison Pignaton de Freitas and Tales Heimfarth and Ivayr Farah Netto and Carlos Eduardo Pereira and Armando Morado Ferreira and Flavio Rech Wagner and Tony Larsson
Year 2011
PublicationType Conference Paper
Journal
HostPublication Proceedings - 25th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2011
DOI http://dx.doi.org/10.1109/WAINA.2011.104
Conference 25th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2011, Biopolis, March 22-25, 2011
Diva url http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:438514
Abstract Node failures in Wireless Sensor Networks composed by static sensor nodes are common due to the nature of the sensor devices and the usually harsh environments in which they are deployed. Node failures can diminish the performance of the network as a whole, thus affecting its functionality in delivering the desired services. For instance, significant regions can become uncovered due to failure of several nearby nodes. This paper reports a study about the use of mobile sensor nodes acting in cooperation with static ones in order to fill gaps created by faulty static nodes. The proposed fault handling mechanism presents alternative policies with pros and cons, depending on the user priorities imposed to the system and the occurrence of failures. A discussion about this topic is presented based on results obtained by simulation of the proposed mechanisms.