Sistema fuzzy para decisão de handover vertical e maximização da vida útil da bateria em redes multimídia sem fio heterogêneas

Abstract

The applications that consume high bandwidth and energy consumption have been increasing considerably fast in mobile networks. However, the mobile devices do not offer support to battery capacity for the intensive / continuous use of such applications. In addition, mobile networks currently have a high degree of heterogeneity and comprise a wide variety of networks with different technologies, such as LTE, Wi-Fi and WiMAX. Therefore, it is necessary the tradeoff to ensure that QoE is provided to users in this scenario, as well as an energy efficiency strategy designed to extend the battery life of mobile devices. This thesis proposes an intelligent architecture based on Fuzzy logic, capable of providing support to decision making to save the energy of mobile devices within an integrated LTE and Wi-Fi network. Considering user satisfaction, the gains obtained through the PSNR, SSIM and VQM metrics were respectively 32%, 31% and 91% higher than the architecture without Fuzzy logic. Thus, the simulated experiments show the benefits and feasibility of the proposed solution.