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Network Function Virtualization (NFV) is promising to lower the network operator's capital expenditure and operational expenditure by replacing proprietary hardware-based network equipment with software-based virtual network functions that can be consolidated into telecom clouds. In particular, NFV provides an efficient way to deploy network services using service function chains that consist of a...
This paper presents an eigendecomposition approach for virtual resource embedding in cloud infrastructures. Instead of relying on combinatorial or iterative approaches, the method uses structural description of resource graphs to achieve near optimal joint node and link mapping. The solution extends and generalizes prior work on eigendecomposition of the adjacency matrices for undirected graphs to...
Environmental sustainability in high capacity networks and cloud data centers has become one of the hottest research subjects. In this paper, we investigate the effective use of renewable energy and hence resource allocation in core networks with clouds as a means of reducing the carbon footprint. We develop a Green Virtual Network Embedding (GVNE) framework for minimizing the use of non-renewable...
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