Gholamreza Kakamanshadi, Savita Gupta and Sukhwinder Singh
Department of Computer Science & Engineering, Faculty of Engineering and
Technology, Panjab University, Chandigarh, India
Abstract
A wireless sensor network consists of several sensor nodes. Sensor nodes collaborate to collect meaningful
environmental information and send them to the base station. During these processes, nodes are prone to
failure, due to the energy depletion, hardware or software failure, etc. Therefore, fault tolerance and
energy efficiency are two important objectives for reliable packet delivery. To address these objectives a
novel method called fuzzy informer homed routing protocol is introduced. The proposed method tries to
distribute the workload between every sensor node. A fuzzy logic approach is used to handle uncertainties
in cluster head communication range estimation. The simulation results show that the proposed method can
significantly reduce energy consumption as compared with IHR and DHR protocols. Furthermore, results
revealed that it performs better than IHR and DHR protocols in terms of first node dead and half of the
nodes alive, throughput and total remaining energy. It is concluded that the proposed protocol is a stable
and energy efficient fault tolerance algorithm for wireless sensor networks.
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