Energy efficient sleep scheduling in wireless sensor networks inspired by satellite behavior of frogs
One of the most challenging research tasks in the field of wireless sensor networks is controlling the power consumption of batteries and prolonging network lifetime. For sensor networks which consist of a large number of sensor nodes, self-organized control is more suitable than centralized control. In particular, research on bio-inspired self-organization methods attracts attention due to the potential applicability of such methods to wireless sensor networks. In this paper, we focus on the calling behavior of Japanese tree frogs. These frogs display a type of behavior known as ¿satellite behavior¿, where a frog stops calling once it detects the calls of other neighboring frogs. This behavior can be applied in the design of an energy-efficient sleep control mechanism which provides adaptive operation periods. We propose a self-organizing scheduling scheme inspired by the frogs' calling behavior for energy-efficient data transmission in wireless sensor networks. Simulation results show that our proposed sleep control method prolongs network lifetime by a factor of 6.7 as compared with the method without sleep control for a coverage ratio of 80%.