Application of Periodical Shuffle in Controlling Quality of Service in Wireless Sensor Networks
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International Journal of Ad hoc, Sensor & Ubiquitous Computing (IJASUC) 4 (2): 14 (April 2013)

This paper addresses problems in controlling quality of service (QoS) in wireless sensor networks (WSNs). QoS is defined as the number of awakened sensors in a WSN. Sensor deaths (caused by battery failure) and sensor replenishments (caused by redeployment of new sensors) contribute to the difficulty of controlling QoS in WSNs. A previous research developed a QoS control scheme based on the Gur Game algorithm. However, this scheme does not consider the energy consumption of sensors, which shortens WSN lifetime. This paper proposes a novel QoS control scheme that periodically swaps active and sleeping sensors to balance power consumption. Our study also uses the distribution manner of the previous work. Our scheme significantly extends WSN lifetime and maintains desired QoS. Simulations that compared our scheme with previous schemes in various environments show that our scheme build a robust and long-lasting sensor network capable of dynamically adjusting active sensors.
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