Title :
A Quantitative Comparison of Energy Consumption and WSN Lifetime for LEACH and LEACH-SM
Author :
Bakr, B.A. ; Lilien, Leszek
Author_Institution :
Dept. of Comput. Sci., Western Michigan Univ., Kalamazoo, MI, USA
Abstract :
Extending the period of operation (lifetime) of wireless sensor networks (WSNs) is one of the most critical issues. Their limitations are due to limited energy resources. Available research results reveal that significant improvement in WSN lifetime can be achieved by adding spares (spare nodes). At the moment of WSN deployment, the minimum required coverage of WSN targets is assured by the primaries (primary nodes). Spares, if activated, would provide an above-threshold (more than required), redundant target coverage, so can be switched off initially. They are ready to be switched on when any primary exhausts its energy. The spares must be properly managed. Mismanagement includes redundant and above-threshold coverage, which increase transmission of redundant data to cluster heads (collecting information from regular nodes, that is, primary nodes that are not cluster heads). Therefore, mismanaged spares can shorten WSN lifetime instead of extending it. To extend WSN lifetime, we propose the LEACH-SM protocol, which modifies the prominent LEACH protocol by providing an optimal energy-saving spare management, including spare selection. LEACH-SM adds the spare selection phase to LEACH. This paper presents a quantitative comparison of energy consumption and WSN lifetime for both protocols.
Keywords :
protocols; telecommunication network management; telecommunication network reliability; wireless sensor networks; LEACH-SM protocol; WSN lifetime; above-threshold coverage; cluster heads; energy consumption; energy resources; energy-saving spare management; quantitative comparison; redundant target coverage; wireless sensor network lifetime; Base stations; Batteries; Energy consumption; Protocols; Sensors; Switches; Wireless sensor networks; Energy consumption; LEACH; energy efficiency; network lifetime; self-configuration; sensor networks; wireless sensor networks;
Conference_Titel :
Distributed Computing Systems Workshops (ICDCSW), 2011 31st International Conference on
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4577-0384-3
Electronic_ISBN :
1545-0678
DOI :
10.1109/ICDCSW.2011.55