Energy Efficiency Design Challenge in Sensor Networks

In this paper we describe the concept of sensor networks and its applications. A review of factors influencing the energy consumption and energy conserving methods is provided. Energy consumption can only be reduced significantly by switching the radio to a sleep state when it is idle. We observe that under light traffic conditions (as is usually the case in sensor networks), more sleeping time leads to more energy saving but at the moderate or heavy traffic condition there is a complex relationship between energy saving and sleeping time.

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