%0 Journal Article 
%A Ruiz Pérez, Lidia
%A Durán Barroso, Ramón José
%A Miguel Jiménez, Ignacio de
%A Khodashenas, Pouria Sayyad
%A Pedreño Manresa, José Juan
%A Merayo Álvarez, Noemí
%A Aguado Manzano, Juan Carlos
%A Pavón Mariño, Pablo
%A Siddiqui, Shuaib
%A Mata, Javier
%A Fernández Reguero, Patricia
%A Lorenzo Toledo, Rubén Mateo
%A Abril Domingo, Evaristo José
%T A genetic algorithm for VNF provisioning in NFV-enabled cloud/MEC RAN architectures
%D 2018
%@ 2076-3417
%U http://hdl.handle.net/10317/7765
%X 5G technologies promise to bring new network and service capacities and are expected to introduce significant architectural and service deployment transformations. The Cloud-Radio Access Networks (C-RAN) architecture, enabled by the combination of Software Defined Networking (SDN), Network Function Virtualization (NFV) and Mobile Edge Computing (MEC) technologies, play a key role in the development of 5G. In this context, this paper addresses the problems of Virtual Network Functions (VNF) provisioning (VNF-placement and service chain allocation) in a 5G network. In order to solve that problem, we propose a genetic algorithm that, considering both computing resources and optical network capacity, minimizes both the service blocking rate and CPU usage. In addition, we present an algorithm extension that adds a learning stage and evaluate the algorithm performance benefits in those scenarios where VNF allocations can be reconfigured. Results reveal and quantify the advantages of reconfiguring the VNF mapping depending on the current demands. Our methods outperform previous proposals in the literature, reducing the service blocking ratio while saving energy by reducing the number of active core CPUs
%K Ingeniería Telemática
%K Optical network
%K VNF-Provisioning
%K Genetic algorithm
%K VNF Scaling
%K Network planning
%K 3325 Tecnología de las Telecomunicaciones
%~ GOEDOC, SUB GOETTINGEN