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 batteryfailure) and sensor replenishments (caused by redeployment of new sensors) contribute to the difficulty ofcontrolling QoS in WSNs. A previous research developed a QoS control scheme based on the Gur Gamealgorithm. However, this scheme does not consider the energy consumption of sensors, which shortensWSN lifetime. This paper proposes a novel QoS control scheme that periodically swaps active andsleeping sensors to balance power consumption. Ourstudy also uses the distribution manner of theprevious work. Our scheme significantly extends WSNlifetime and maintains desired QoS. Simulationsthat compared our scheme with previous schemes in various environments show that our scheme build arobust and long-lasting sensor network capable of dynamically adjusting active sensors
With the increasing number of applications for Wireless Sensor Networks (WSNs), different Quality of Services (QoS) levels based on the type of applications are required. An increasing research interest has been noted in the provision of QoS support in WSNs. QoS support in WSNs is challenging because of very limited resources, such as battery power, processing power, memory, and bandwidth. An earlier study introduced a QoS control approach based on the Gur Game. The Gur Game-based scheme can maintain QoS without knowing the total number of sensors. However, the Gur Game-based scheme does not consider the active sensor coverage. The problems of collecting redundant data and wasting bandwidth and battery energy arise if active sensors are distributed too densely or too sparsely. Therefore, this study proposes a Coverage-Aware QoS Control (CAQC) to achieve both QoS and coverage control using an enhanced reward function. Simulations that compared our scheme with previous studies in various environments indicated that CAQC creates a robust sensor network capable of achieving both QoS and coverage targets.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.