Based on the wide application of cloud computing and wireless sensor networks in various fields,the Sensor-Cloud System(SCS)plays an indis-pensable role between the physical world and the net-work world.However,due to the close connection and interdependence between the physical resource net-work and computing resource network,there are se-curity problems such as cascading failures between systems in the SCS.In this paper,we propose a model with two interdependent networks to represent a sensor-cloud system.Besides,based on the perco-lation theory,we have carried out a formulaic theoret-ical analysis of the whole process of cascading fail-ure.When the system's subnetwork presents a steady state where there is no further collapse,we can ob-tain the largest remaining connected subgroup compo-nents and the penetration threshold.Theoretically,this result is the critical maximum that the coupled SCS can withstand.To verify the correctness of the theo-retical results,we further carried out actual simulation experiments.The results show that a scale-free net-work priority attack's percolation threshold is always less than that of ER network which is priority attacked.Similarly,when the scale-free network is attacked first,adding the power law exponent λ can be more intuitive and more effective to improve the network's reliabil-ity.

Hao Peng;Zhen Qian;Guangquan Xu;Kejie Mao;Kangtian Li;Dandan Zhao

Department of Computer Science and Engineering,Zhejiang Normal University,Jinhua Zhejiang 321004,China;Key Laboratory of Intelligent Education Technology and Application of Zhejiang Province,Zhejiang Normal University,Jinhua Zhejiang 321004,China;The Big Data School,Qingdao Huanghai University,Qingdao Shandong 266427,China;College of Intelligence and Computing,Tianjin University,Tianjin 300072,China

中国通信（英文版）

[1]Hao Peng;Zhen Qian;Guangquan Xu;Kejie Mao;Kangtian Li;Dandan Zhao-.Reliability Analysis of Heterogeneous Sensor-Cloud Systems against Targeted Attacks)[J].中国通信（英文版）,2022(08):181-197

perco,formulaic

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