Towards UAV-based MEC service chain resilience evaluation: a quantitative modeling approach

Bai, J. ; Chang, X. ; Rodríguez, Ricardo J. (Universidad de Zaragoza) ; Trivedi, K. S. ; Li, S.

Resumen: Unmanned aerial vehicle (UAV) and network function virtualization (NFV) facilitate the deployment of multi-access 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.

Idioma: Inglés

DOI: 10.1109/TVT.2022.3225564

Año: 2023

Publicado en: IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 72, 4 (2023), 5181 - 5194
ISSN: 0018-9545

Factor impacto JCR: 6.1 (2023)

Categ. JCR: ENGINEERING, ELECTRICAL & ELECTRONIC rank: 45 / 353 = 0.127 (2023) - Q1 - T1
Categ. JCR: TRANSPORTATION SCIENCE & TECHNOLOGY rank: 12 / 72 = 0.167 (2023) - Q1 - T1
Categ. JCR: TELECOMMUNICATIONS rank: 15 / 119 = 0.126 (2023) - Q1 - T1

Factor impacto CITESCORE: 13.0 - Automotive Engineering (Q1) - Electrical and Electronic Engineering (Q1) - Aerospace Engineering (Q1) - Computer Networks and Communications (Q1)

Factor impacto SCIMAGO: 2.714 - Aerospace Engineering (Q1) - Applied Mathematics (Q1) - Computer Networks and Communications (Q1) - Electrical and Electronic Engineering (Q1) - Automotive Engineering (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-UZ/T21-20R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Lenguajes y Sistemas Inf. (Dpto. Informát.Ingenie.Sistms.)