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Network function virtualization (NFV) is envisioned as one of the critical technologies in 5th-Generation (5G) mobile networks. This paper investigates the virtual network function forwarding graph (VNF-FG) design and virtual network function (VNF) placement for 5G mobile networks. We first propose a two-step method composed of flow designing and flow combining for generating VNF-FGs according to...
In this paper, we study the VNF placement problem in hybrid NFV environment, which is important during the transition from traditional networks to NFV networks. We first propose a new concept of hybrid NFV environment, which is more comprehensive and realistic than the former works. Then, we give out a novel model of VNF placement optimization to achieve lower bandwidth consumption and lower maximum...
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