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On Sink Mobility Trajectory in Clustering Routing Protocols in WSNs


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      Energy efficient routing protocols are consistently cited as efficient solutions for Wireless Sensor Networks (WSNs) routing. The area of WSNs is one of the emerging and fast growing fields which brought low cost, low power and multi-functional sensor nodes. In this paper, we examine some protocols related to homogeneous and heterogeneous networks. To evaluate the efficiency of different clustering schemes, we compare five clustering routing protocols; Low Energy Adaptive Clustering Hierarchy (LEACH), Threshold Sensitive Energy Efficient Sensor Network (TEEN), Distributed Energy Efficient Clustering (DEEC) and two variants of TEEN which are Clustering and Multi-Hop Protocol in Threshold Sensitive Energy Efficient Sensor Network (CAMPTEEN) and Hierarchical Threshold Sensitive Energy Efficient Sensor Network (H-TEEN). The contribution of this paper is to introduce sink mobility to increase the network life time of hierarchal routing protocols. Two scenarios are discussed to compare the performances of routing protocols; in first scenario static sink is implanted and in later one mobile sink is used. We perform analytical simulations in MATLAB by using different performance metrics such as, number of alive nodes, number of dead nodes and throughput.

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      Design of a distributed energy-efficient clustering algorithm for heterogeneous wireless sensor networks


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        Networking & Internet architecture


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