NDLI: Exploiting sensor spatial redundancy to improve network lifetime [wireless sensor networks]

Content Provider	IEEE Xplore Digital Library
Author	Alfieri, A. Bianco, A. Brandimarte, P. Chiasserini, C.-F.
Copyright Year	2004
Description	Author affiliation: Dipt. di Sistemi di Produzione ed Economia dell'Azienda, Politecnico di Torino, Turin, Italy (Alfieri, A.)
Abstract	One of the most critical issues in wireless sensor networks is represented by the limited availability of energy within network nodes; thus, making good use of energy is a must to increase network lifetime. We define as network lifetime the period from the time instant when the network starts functioning till the network runs, satisfying its quality requirements, i.e., a given level of coverage in the area of interest is guaranteed. To maximize system lifetime, we exploit sensor spatial redundancy by defining sub-sets of sensors active in different time periods, to allow sensors to save energy when inactive. Two approaches are presented: the first one, based on mathematical programming techniques, must run in a centralized way; whereas the second one is based on a greedy algorithm, aimed at a distributed implementation. To assess their performance and provide guidance to network design, the two approaches are compared by varying several network parameters.
Starting Page	3170
Ending Page	3176
File Size	511240
Page Count	7
File Format	PDF
ISBN	0780387945
DOI	10.1109/GLOCOM.2004.1378936
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensor phenomena and characterization Sensor systems Batteries Availability Mathematical programming Monitoring Switches Electronic mail Wireless sensor networks Redundancy
Content Type	Text
Resource Type	Article

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