Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloReducing Service Deployment Cost Through VNF Sharing
Anno di pubblicazione2019
  • Elettronico
  • Cartaceo
Autore/iFrancesco Malandrino; Carla Fabiana Chiasserini; Gil Einziger; Gabriel Scalosub
Affiliazioni autoriCNR-IEIIT; Politecnico di Torino e CNR-IEIIT; Ben-Gurion University of the Negev; Ben-Gurion University of the Negev
Autori CNR e affiliazioni
  • inglese
AbstractThanks to its computational and forwarding capabilities, the mobile network infrastructure can support several third-party ("vertical") services, each composed of a graph of virtual (network) functions (VNFs). Importantly, one or more VNFs are often common to multiple services, thus the services deployment cost could be reduced by letting the services share the same VNF instance instead of devoting a separate instance to each service. By doing that, however, it is critical that the target KPI (key performance indicators) of all services are met. To this end, we study the VNF sharing problem and make decisions on (i) when sharing VNFs among multiple services is possible, (ii) how to adapt the virtual machines running the shared VNFs to the combined load of the assigned services, and (iii) how to prioritize the services traffic within shared VNFs. All decisions aim to minimize the cost for the mobile operator, subject to requirements on end-to-end service performance, e.g., total delay. Notably, we show that the aforementioned priorities should be managed dynamically and vary across VNFs. We then propose the FlexShare algorithm to provide near-optimal VNF-sharing and priority assignment decisions in polynomial time. We prove that FlexShare is within a constant factor from the optimum and, using real-world VNF graphs, we show that it consistently outperforms baseline solutions.
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RivistaIEEE/ACM transactions on networking (Print)
Attiva dal 1993
Editore: Institute of Electrical and Electronics Engineers, and the Association for Computing Machinery, - New York, NY
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 1063-6692
Titolo chiave: IEEE/ACM transactions on networking (Print)
Titolo proprio: IEEE/ACM transactions on networking (Print)
Titolo abbreviato: IEEE/ACM trans. netw. (Print)
Titoli alternativi:
  • TON (Print)
  • Institute of Electrical and Electronics Engineers, Association for Computing Machinery transactions on networking (Print)
  • Transactions on networking (Print)
  • Networking (Print)
Numero volume della rivista-
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Verificato da refereeSì: Internazionale
Stato della pubblicazionePreprint
Indicizzazione (in banche dati controllate)-
Parole chiave5G; VNF
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Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli/Attività/Sottoprogetti CNR-
Progetti Europei-
Reducing Service Deployment Cost Through VNF Sharing
Descrizione: pre-print
Tipo documento: application/pdf