Análise de confiabilidade de garantia de qualidade de serviço (QoS) em uma Arquitetura WiMAX através de métricas de Qualidade de Experiência (QoE)

Abstract

WiMAX or IEEE 802.16, and its framework of Quality of Service (QoS) is a technology for wireless networks WMAN kind of great potential, in order to secure a stable connection without wire and meets the need of different applications. The WiMAX implements natively on your MAC layer support for QoS framework, which is a quality standard facing the service flow with a focus on network. The Quality of Experience (QoE) is another standard of quality, but facing the visual aspect of the end user. Studies and experiments were performed in the framework of QoS of WiMAX module for ns- 2: authored by Aymen Telecom. We evaluated the reliability of implementation of QoS guarantee of the module through scenarios that represent the future of the internet, injecting real traffic video, voice and ftp in simulation scenario to allow not only to define QoS metrics (some improvements in end-to-end in network architectures), but also metrics (QoE enhancements for multimedia applications from the view / user experience). This paper proposes a reliability analysis, where services will be required by various devices in a competing scenario, simulation and data collection programs to verify that indeed the network architecture in question, WiMAX, makes the correct use and implement these standards. The simulation results showed that the framework guarantees the minimum guarantee required QoS for different videos, but it was noticed that the resolution and complexity of the influence video quality of user experience.