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Energy efficiency through joint routing and function placement in different modes of SDN/NFV networks
, Article Computer Networks ; Volume 200 , 2021 ; 13891286 (ISSN) ; Parsaeefard, S ; Maddah Ali, M. A ; Shah-Mansouri, V ; Khalaj, B. H ; Bennis, M ; Sharif University of Technology
Elsevier B.V
2021
Abstract
Network function virtualization (NFV) and software-defined networking (SDN) are two promising technologies to enable 5G and 6G services and achieve cost reduction, network scalability, and deployment flexibility. However, migration to full SDN/NFV networks in order to serve these services is a time-consuming process and costly for mobile operators. This paper focuses on energy efficiency during the transition of mobile core networks (MCN) to full SDN/NFV networks and explores how energy efficiency can be addressed during such migration. We propose a general system model containing a combination of legacy nodes and links, in addition to newly introduced NFV and SDN nodes. We refer to this...