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Clustering and multi-hop forwarding improve the energy efficiency of wireless sensor networks (WSNs). However, when cluster heads transmit their data to a sink via multi-hop communication, nodes around the sink are burdened with heavy relay traffic and tend to die early, which results in the energy hole and network partition problems. In this paper, we propose an energy efficient Unequal-Clustering...
Reliability evaluation can help to minimize costs and maximize reliability of wireless sensor networks (WSN). To evaluate the reliability of WSN, a mathematical model and an enhanced factoring (EF) algorithm are presented in this paper. Being different from traditional factoring algorithm, the node contraction is enhanced by source expansion and the isomorphic sub-networks are identified. These operations...
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