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Wireless sensor networks have emerged as a promising technology for a wide range of important applications. Energy conservation and prolonging the network lifetime are significant challenges in the design and implementation of wireless sensor networks. Clustering techniques have emerged as a popular choice for prolonging the lifetime of a wireless sensor network. In this paper, the authors propose a Two-Level Cluster based Protocol (TLCP) for wireless sensor networks to minimize the energy consumption and maximize the lifetime of wireless sensor networks. TLCP organizes sensor nodes into clusters and improves the data transmission mechanism from the cluster heads to the base station via constructing a cluster among the cluster heads.
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