Abstract
The most important consideration in designing protocols for wireless sensor networks is the energy constraint of nodes because in most cases battery recharging is inconvenient or impossible. Therefore, many researches have been done to overcome this demerit. Clustering is one of the main approaches in designing scalable and energy-efficient protocols for wireless sensor networks. The cluster heads take the task of data aggregation and data routing to decrease the amount of communication and this prolongs the network lifetime. LEACH protocol is one of the famous of them. In this paper, we proposed a novel scheme to investigate the cluster, the Fuzzy Logic Cluster Leach Protocol (FUZZY-LEACH), which uses Fuzzy Logic Inference System (FIS) in the cluster process. We demonstrate that using multiple parameters in cluster reduces energy consumption. We compare our technique with the LEACH protocol to show that using a multi parameter FIS enhances the network lifetime significantly. Simulation results demonstrate that the network lifetime achieved by the proposed method could be increased by nearly 28.5% more than that obtained by LEACH protocol in  scenario, and by nearly 26.4% more than that LEACH protocol in  scenario.
Highlights
Recent advances in micro-electro-mechanical systems, digital electronics, and wireless communications have led to the emergence of wireless sensor networks (WSNs), which consist of a large number of sensing devices each capable of detecting, processing and transmitting environmental information
Simulation results demonstrate that the network lifetime achieved by the proposed method could be increased by nearly 28.5% more than that obtained by Low Energy Adaptive Clustering Hierarchy (LEACH) protocol in scenario, and by nearly 26.4% more than that LEACH protocol in scenario
The Far-Zone LEACH protocol (FZ-LEACH) [14] is an improvement to the LEACH‟s to solve the problem of existence of the large clusters in the sensor networks, by forming Far- Zone that is a group of sensor nodes, which is placed at locations where their energies are less than a threshold
Summary
Recent advances in micro-electro-mechanical systems, digital electronics, and wireless communications have led to the emergence of wireless sensor networks (WSNs), which consist of a large number of sensing devices each capable of detecting, processing and transmitting environmental information. The CHs near the base station tend to die earlier, because they are in heavier relay traffic than the cluster-heads which are located relatively far from the base station.One of the most important algorithms which are suggested in the field of WSNs is the LEACH, an innovative implementation of clustering, aggregation, and dynamic scheduling, is introduced [11] Despite these capabilities of the LEACH, it still has a weakness directed toward the selection of the optimal number of CH. The proposed (FUZZY-LEACH) is introduced to make a further improvement in maximizing the lifetime of the WSNs. the use of this algorithm will make it possible to determine the percentage of nodes that will be CHs, prior to network deployment, without the need to have a specialized equipped node with GPS and without need to transmit node location to the base station.
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