Computer Science ›› 2017, Vol. 44 ›› Issue (2): 123-128.doi: 10.11896/j.issn.1002-137X.2017.02.018

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Robust Approach for Holes Recovery of Wireless Sensor Networks

YAN Luo-heng and HE Yu-yao   

  • Online:2018-11-13 Published:2018-11-13

Abstract: In the wireless sensor hybrid networks composed of stationary nodes and mobile nodes,coverage holes is one of the key problems because it directly reduces the performance of network.In order to solve this problem,a robust approach based on improved artificial fish swarm algorithm was presented for holes recovery in this paper.The movement of mobile nodes is analogized to the motion of artificial fish such as prey,follow and swarm with the network coverage as object function.Two new fish motions called as jump and rebirth are also presented to enhance the convergence of this algorithm.The self-adaptive visual distance and step size of fish are implemented when the status of artificial fish is updated to recover the hole of networks.Simulation experiments show the robustness of the algorithm.The holes can be recovered efficiently without location information and holes probe using the least amount of mobile nodes.The network coverage is improved significantly with this proposed algorithm.

Key words: Wireless sensor networks,Hybrid network,Holes recovery,Artificial fish swarm algorithm,Robustness

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