Title :
Range-free localization for air-dropped WSNs by filtering node estimation improvements
Author :
Garcia, Eva M. ; Bermudez, Aurelio ; Casado, Rafael
Author_Institution :
Inst. de Investig. en Inf. (I3A), Univ. de Castilla-La Mancha, Albacete, Spain
Abstract :
Some sensor network applications involve an aerial deployment of many sensor nodes over a particular area of interest. In this context, current range-free localization proposals, based on an iterative refinement and exchange of node estimations, are not directly applicable, because they introduce a high traffic overhead. In this paper, we propose to control this overhead by means of avoiding the transmission of certain localization packets. The criterion applied by this new localization technique to filter packets is based on the amount of improvement shown after updating an estimation and the time from the last transmission. We also tune this filter in order to find an optimal trade-off between the benefit in traffic and the penalty in time.
Keywords :
filtering theory; iterative methods; sensor placement; telecommunication traffic; wireless sensor networks; aerial deployment; air dropped WSN; filter packets; iterative refinement; localization packet transmission; node estimation exchange; node estimation filtering; optimal trade-off; range free localization technique; sensor network application; sensor nodes; Delta modulation; Estimation; Filtering algorithms; Global Positioning System; Information filters; Proposals; Wireless sensor networks; component; localization; range-free; wireless sensor networks;
Conference_Titel :
Wireless and Mobile Computing, Networking and Communications (WiMob), 2010 IEEE 6th International Conference on
Conference_Location :
Niagara Falls, ON
Print_ISBN :
978-1-4244-7743-2
Electronic_ISBN :
978-1-4244-7741-8
DOI :
10.1109/WIMOB.2010.5645023
