Optimal Mobile Sink Selection Scheme for Multiple Sink Mobile Wireless Sensor Networks

One of the most critical properties of a wireless sensor network is the adaptivity to topological changes. Several studies have demonstrated the benefits of using mobile nodes as an effective tool for gathering data from sensor nodes. However, nodes mobility causes steady connectivity disruptions, where the delay between two disruptions is dependent on the node movement speed and direction. In this paper, we introduce an approach, which based on the connection expiry time, to cluster nodes around a moving mobile sink. Sensor nodes joins the mobile sink that offers the longest connectivity time and the lowest communication overhead. When compared to its best rivals in the literature, the proposed approach improves the packet delivery ratio by up to 21%, end-to-end delay by up to 28% and energy consumption by up to 42%.