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In wireless sensor network probability of fault occurrences are very high mainly for physical deployment and wireless communication policy. Faulty sensors node and transmission fault decreases the network quality. It is most important to tolerate the faults which occur in network to improve the network quality. In wireless sensor network, energy is most considerable thing because each sensor node has a constant power supply. In this paper, the authors propose Group Based Fault Tolerant Scheme (GBFTS) for fault tolerant and energy efficient routing in wireless sensor networks.
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