A Survey of Energy-Efficient Scheduling Mechanisms in Sensor Networks |
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Authors: | Lan Wang Yang Xiao |
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Affiliation: | (1) Department of Computer Science, The University of Memphis, 373 Dunn Hall, Memphis, TN 38152, USA |
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Abstract: | Sensor networks have a wide range of potential, practical and useful applications. However, there are issues that need to
be addressed for efficient operation of sensor network systems in real applications. Energy saving is one critical issue for
sensor networks since most sensors are equipped with non-rechargeable batteries that have limited lifetime. To extend the
lifetime of a sensor network, one common approach is to dynamically schedule sensors' work/sleep cycles (or duty cycles).
Moreover, in cluster-based networks, cluster heads are usually selected in a way that minimizes the total energy consumption
and they may rotate among the sensors to balance energy consumption. In general, these energy-efficient scheduling mechanisms
(also called topology configuration mechanisms) need to satisfy certain application requirements while saving energy. In this
paper, we provide a survey on energy-efficient scheduling mechanisms in sensor networks that have different design requirements
than those in traditional wireless networks. We classify these mechanisms based on their design assumptions and design objectives. Different mechanisms may make different assumptions about their sensors including detection model, sensing area, transmission
range, failure model, time synchronization, and the ability to obtain location and distance information. They may also have
different assumptions about network structure and sensor deployment strategy. Furthermore, while all the mechanisms have a
common design objective to maximize network lifetime, they may also have different objectives determined by their target applications.
A preliminary was presented in BROADNETS 2006 29] |
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Keywords: | sensor network energy consumption sleep-mode scheduling energy-efficient scheduling |
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