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Searching for a sink and determining routing paths are challenging tasks in a mobile sink environment, especially in a location-free environment. Updating the sink location frequently by transmitting messages to preserve a route greatly increases the energy consumption of sensors. Therefore, methods to lower updating costs should be investigated. In this study, a cluster-based mobile sink exploration...
Location-free boundary detection is an important issue in wireless sensor networks (WSNs). Detecting and locating boundaries have a great relevance for network services, such as routing protocol and coverage verification. Previous designs, which adopt topology-based approaches to recognizing obstacles or network boundaries, do not consider the environment with mobile sensor nodes. When a network topology...
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