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Prolonging network lifetime has become a real challenge in Mobile Wireless Sensor Networks (MWSNs) as sensors have limited energy. In this paper, we propose a Cluster-based Energy-efficient Scheme (CES) for electing a cluster-head to evenly distribute energy consumption in the overall network and therefore obtain a longer network lifetime. In CES, each(More)
In this paper, we introduce a new medium access control (MAC) protocol for event-driven wireless sensor networks (WSN). Generally, there are three models of WSN: continuous, on-demand and event-driven. They have different characteristics and each requires a different design model. In the event-driven WSN, the sensors send data only when certain events(More)