Navegando por Assunto "Quality of experience (QoE)"

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Acesso aberto (Open Access)
Green markov - uma abordagem híbrida de política markoviana e simulação discreta para planejamento de alocação de usuários em redes macro-femto
(Universidade Federal do Pará, 2014-10-31) CARDOSO, Jorge Amaro de Sarges; CARDOSO, Diego Lisboa; http://lattes.cnpq.br/0507944343674734; FRANCÊS, Carlos Renato Lisboa; http://lattes.cnpq.br/7458287841862567
The use of voice and data communication via mobile devices has increased significantly in recent years. This expansion brings some difficulties such as: continuous expansion of network capacity and energy efficiency. In this context, has been consolidating the concept of Green Networks, which focuses on the effort to energy saving and CO2 reduction. Thus, this paper proposes validate a model of a policy based on Markov decision process to optimize energy consumption, QoS and QoE, in the allocation of macrocell and femtocell users in networks. For this the model was inserted into the network simulator NS-2, combining the Markov analytical solution to the characteristic flexibility of discrete simulation. From the results presented in the simulation, the policy obtained significant savings in energy consumption, improving energy efficiency by up to 4%, and improve the quality of service in relation to the macrocell and femtocell networks, demonstrating effective in order to directly change the metrics of QoS and QoE.