Bai, Jing; Chang, Xiaolin; Rodríguez, Ricardo J.; Trivedi, Kishor; Li, Shupan
Towards UAV-based MEC Service Chain Resilience Evaluation: A Quantitative Modeling Approach Journal Article
In: IEEE Transactions on Vehicular Technology, vol. 72, no. 4, pp. 5181–5194, 2023.
Abstract | Links | BibTeX | Tags: resilience, Resource Degradation, Semi-Markov Process, Unmanned Aerial Vehicle
@article{BCRTL-TVT-23,
title = {Towards UAV-based MEC Service Chain Resilience Evaluation: A Quantitative Modeling Approach},
author = {Jing Bai and Xiaolin Chang and Ricardo J. Rodríguez and Kishor Trivedi and Shupan Li},
url = {http://webdiis.unizar.es/~ricardo/files/papers/BCRTL-TVT-23.pdf},
doi = {10.1109/TVT.2022.3225564},
year = {2023},
date = {2023-04-19},
urldate = {2022-01-01},
journal = {IEEE Transactions on Vehicular Technology},
volume = {72},
number = {4},
pages = {5181--5194},
abstract = {Unmanned aerial vehicle (UAV) and network function virtualization (NFV) facilitate the deployment of multiaccess edge computing (MEC). In the UAV-based MEC (UMEC) network, virtualized network function (VNF) can be implemented as a lightweight container running on UMEC host operating system (OS). However, UMEC network is vulnerable to attack, which can result in resource degradation and even UMEC service disruption. Rejuvenation techniques, such as failover technique and live container migration technique, can mitigate the impact of resource degradation but their effectiveness to improve the resilience of UMEC services should be evaluated. This paper presents a quantitative modeling approach based on semi-Markov process to investigate the resilience of a UMEC service chain consisting of any number of VNFs executed in any number of UMEC hosts in terms of availability and reliability. Unlike existing studies, the semi-Markov model constructed in this paper can capture the time-dependent behaviors between VNFs, between host OSes, and between VNFs and host OSes on the condition that the holding times of the recovery and failure events follow any kind of distribution. We perform the sensitivity analysis to identify potential resilience bottlenecks. The results highlight that migration time is the parameter significantly affecting the resilience, which shed the insight on designing the UMEC service chain with high-grade resilience requirements. In addition, we carry out the numerical experiments to reveal that: (i) the type of failure time distribution has a significant effect on the resilience; and (ii) the resilience increases with decreasing number of VNFs, while the availability increases with increasing number of UMEC hosts and the reliability decreases with increasing number of UMEC hosts, which can provide meaningful guidance for the UAV placement optimization in the UMEC network.},
keywords = {resilience, Resource Degradation, Semi-Markov Process, Unmanned Aerial Vehicle},
pubstate = {published},
tppubtype = {article}
}
Unmanned aerial vehicle (UAV) and network function virtualization (NFV) facilitate the deployment of multiaccess edge computing (MEC). In the UAV-based MEC (UMEC) network, virtualized network function (VNF) can be implemented as a lightweight container running on UMEC host operating system (OS). However, UMEC network is vulnerable to attack, which can result in resource degradation and even UMEC service disruption. Rejuvenation techniques, such as failover technique and live container migration technique, can mitigate the impact of resource degradation but their effectiveness to improve the resilience of UMEC services should be evaluated. This paper presents a quantitative modeling approach based on semi-Markov process to investigate the resilience of a UMEC service chain consisting of any number of VNFs executed in any number of UMEC hosts in terms of availability and reliability. Unlike existing studies, the semi-Markov model constructed in this paper can capture the time-dependent behaviors between VNFs, between host OSes, and between VNFs and host OSes on the condition that the holding times of the recovery and failure events follow any kind of distribution. We perform the sensitivity analysis to identify potential resilience bottlenecks. The results highlight that migration time is the parameter significantly affecting the resilience, which shed the insight on designing the UMEC service chain with high-grade resilience requirements. In addition, we carry out the numerical experiments to reveal that: (i) the type of failure time distribution has a significant effect on the resilience; and (ii) the resilience increases with decreasing number of VNFs, while the availability increases with increasing number of UMEC hosts and the reliability decreases with increasing number of UMEC hosts, which can provide meaningful guidance for the UAV placement optimization in the UMEC network.
Hernández-Bejarano, Miguel; Rodríguez, Ricardo J; Merseguer, José
A Vision for Improving Business Continuity through Cyber-resilience Mechanisms and Frameworks Proceedings Article
In: Proceedings of the 16th Iberian Conference on Information Systems and Technologies (CISTI), pp. 1–5, 2021.
Abstract | Links | BibTeX | Tags: cyber-attacks, cybersecurity, menaces, resilience, vulnerabilities
@inproceedings{HRM-CISTI-21,
title = {A Vision for Improving Business Continuity through Cyber-resilience Mechanisms and Frameworks},
author = {Miguel Hernández-Bejarano and Ricardo J Rodríguez and José Merseguer},
url = {http://webdiis.unizar.es/~ricardo/files/papers/HRM-CISTI-21.pdf},
doi = {10.23919/CISTI52073.2021.9476324},
year = {2021},
date = {2021-01-01},
booktitle = {Proceedings of the 16th Iberian Conference on Information Systems and Technologies (CISTI)},
pages = {1--5},
abstract = {Nowadays, business organizations support daily operations using Information and Communication Technologies. They serve as a basis to have a con- trolled management of resources, services and business goals, aligned with the mission of the organization. In this paper, we review standards and frameworks for achieving cyber-resilience in organizations, such as the NIST framework, ENISA, or international standards as the ISO/IEC 27032. We then envision the need of a new cyber-resilience framework that leveraging machine learning techniques contributes to improve business continuity.},
keywords = {cyber-attacks, cybersecurity, menaces, resilience, vulnerabilities},
pubstate = {published},
tppubtype = {inproceedings}
}
Nowadays, business organizations support daily operations using Information and Communication Technologies. They serve as a basis to have a con- trolled management of resources, services and business goals, aligned with the mission of the organization. In this paper, we review standards and frameworks for achieving cyber-resilience in organizations, such as the NIST framework, ENISA, or international standards as the ISO/IEC 27032. We then envision the need of a new cyber-resilience framework that leveraging machine learning techniques contributes to improve business continuity.