Dynamic Cloud Resource Scheduling in Virtualized 5G Mobile Systems

Bilal Ahmad, Taleb Tarik, Andras Vajda, Bagaa Miloud

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

15 Citations (Scopus)


In virtualized networks, network functions are delivered as software running on generic hardware allowing service providers to dynamically allocate resources based on traffic and service demands. Network Function Virtualization (NFV) is becoming a key enabler and consequently a hot research topic. Dynamic scaling of resources in NFV is a highly important challenge towards its implementation in real-life networks. In this paper, we propose a method to predict the required resources in the appropriate time to sustain true elasticity in NFV. The capacity of different Virtualized Network Functions (VNFs) would increase/decrease in a way that the CPU utilization is maximized while the overall cost is minimized. In this paper, we present two strategies to predict the day-ahead CPU utilization. The first strategy is an offline scheduling method that helps managing elasticity in virtualized networks by predicting normal days events. The second one is an online scheduling approach that predicts the day-ahead CPU utilization during sudden peaks due to some unusual circumstances. In this paper, we also present new promising results that show the correlation between the control and data planes. Finally, we propose a hybrid
algorithm that uses both strategies to efficiently handle elasticity in virtualized networks. The obtained results are encouraging and are all based on real-life data of mobile operator networks.
Original languageEnglish
Title of host publication2016 IEEE Global Communications Conference
Subtitle of host publicationGLOBECOM
Number of pages6
ISBN (Electronic)978-1-5090-1328-9
Publication statusPublished - Feb 2017
MoE publication typeA4 Article in a conference publication
EventIEEE Global Communications Conference - Washington, United States
Duration: 4 Dec 20168 Dec 2016
Conference number: 59


ConferenceIEEE Global Communications Conference
Abbreviated titleGLOBECOM
Country/TerritoryUnited States


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