基于DSPN的5G工业控制系统业务可用性分析

doi:10.12305/j.issn.1001-506X.2023.08.39

Abstract

Abstract:

The key to the large-scale application of 5G industrial control systems is to ensure its high availability. However, through experimental evaluation, the cost is high and there are many difficulties. Existing availability modeling methods rarely consider the impact of 5G on availability. Taking an actual 5G rotating steel system as an example, a deterministic stochastic Petri net (DSPN) is used to formalize the dynamic faults and maintenance process of the industrial control system after 5G technology transformation from a business process perspective, and to evaluate the impact of different failure models on the system's application availability. In the case study, the impact of different parameters on system application availability in the 5G industrial control system is analyzed, and it is found that the mean time between failures (MTBF) of wireless links has the greatest impact on system application availability. The experiment results indicate that the proposed method can be used to evaluate the application availability of 5G industrial control systems, providing reference for system designers.

Key words: application availability, 5G, rotating steel, deterministic stochastic Petri net (DSPN)

CLC Number:

TN081

Qihang YANG, Zhiwei YI, Ning HUANG. DSPN-based application availability analysis for 5G industrial control systems[J]. Systems Engineering and Electronics, 2023, 45(8): 2634-2642.

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References 30

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组件类型	MTBF/h	MTTR/h
传感器	28 011	5
5G摄像头	30 000	8
PLC	131 400	100
边缘网关	44 957	8
gNB	120 000	10
服务器硬件	8 760	1
操作系统	1 440	1
虚拟机	2 800	0.17
边缘服务	6 865.3	0.167

服务	感知	边缘网关	无线通信	边缘服务
可用性场景1	0.999 866 7	0.999 660 0	0.976 824 0	0.994 856 1

参数	敏感度指数
无线链路 MTBF	4.51×10^-3
PLC MTBF	0.34×10^-3
操作系统 MTBF	0.31×10^-3
gNB MTBF	3.75×10^-5
虚拟机 MTBF	2.73×10^-3
边缘服务 MTBF	1.09×10^-5

服务		感知	网关	无线通信	边缘服务
可用性	场景1	0.999 866 7	0.999 660 0	0.976 824 0	0.994 856 1
可用性	场景2	0.999 371 8	0.999 822 1	0.999 845 8	0.996 577 5

场景	场景1	场景2
业务可用性	0.971 339 4	0.995 620 7

DSPN-based application availability analysis for 5G industrial control systems

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