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.

引用

页数：16

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