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Distributed k-connected fault-tolerant topology control algorithms with PSO in future autonomic sensor systems
by Wenzhong Guo; Naixue Xiong; Athanasios V. Vasilakos; Guolong Chen; Chaolong Yu
International Journal of Sensor Networks (IJSNET), Vol. 12, No. 1, 2012
Abstract: Fault-tolerant topology control in Wireless Sensor Networks (WSNs) has drawn a significant amount of research interest and become a hot point. In this paper, we first propose a centralised k-connected fault-tolerant topology control algorithm with Particle Swarm Optimisation (PSO) called CKFTC-PSO. In CKFTC-PSO, we take both issues of node failure and power efficiency into consideration and give the mathematical model of k-connected fault-tolerant topology control problem. Inspired by physics of Genetic Algorithm (GA), the principles of mutation and crossover operator in GA are incorporated into the proposed CKFTC-PSO algorithm to achieve a better diversity and break away from local optima. Based on CKFTC-PSO, we then propose a distributed k-connected fault-tolerant topology control algorithm with PSO called DKFTC-PSO. DKFTC-PSO has better performance than CKFTC-PSO in power-efficiency while preserve k-connectivity. Simulation results are presented to demonstrate the effectiveness of the proposed algorithms.
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