Analysis on cascading reliability of edge-assisted Internet of Things

被引：31
作者：
Fu, Xiuwen [1 ,2 ]
Wang, Ye [1 ]
Yang, Yongsheng [1 ]
Postolache, Octavian [3 ]
机构：
[1] Shanghai Maritime Univ, Inst Logist Sci & Engn, Shanghai 201306, Peoples R China
[2] Wuhan Univ Technol, Sch Logist Engn, Wuhan 430070, Peoples R China
[3] ISCTE Lisbon Univ Inst, Lisbon, Portugal
来源：
RELIABILITY ENGINEERING & SYSTEM SAFETY | 2022年 / 223卷
关键词：
Cascading failure; Edge-assisted Internet of Things; Congestion sensitivity; Data convergence; Cascading reliability; WIRELESS SENSOR NETWORKS; DATA-COMPRESSION; FAILURE; ROBUSTNESS; PROPAGATION; TOPOLOGY; MODEL; NODE; INVULNERABILITY; DYNAMICS;
D O I：
10.1016/j.ress.2022.108463
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cascading failure is one of the key issues affecting the reliability of edge-assisted Internet of Things (IoTs), but is rarely studied. In this paper, a cascading model is developed with full consideration of the realistic characteristics of edge-assisted IoTs (.., congestion sensitivity and data convergence). In this model, the load of edge-computing nodes is represented by the real-time number of data packets, and is affected by the congestion state of links and the data-compressing ability of nodes. The experimental results have shown that being isolated is the main cause of performance degradation in edge-assisted IoTs during cascading failure; cascading reliability is positively correlated with link density and cluster head ratio; increasing the overload tolerance coefficient and variable compression ratio can improve the cascading reliability of the network; decreasing the congestion-tolerance coefficient can reduce the damage of the cascading failure to the network; cascading failure triggered by high-directional betweenness attacks is the most damaging.
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收藏
页数：16
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