Handover Ciente de Qualidade de Experiência e Qualidade de Serviço para Transmissão de Vídeo em Redes Heterogêneas

Resumo

Heterogeneous networks offer a wide range of multimedia services ranging from safety and traffic warnings to entertainment and advertising videos. In this context, users can access content through the communication between their devices with different wireless networks, such as, LTE and Wi-Fi. However, real-time video streaming at a heterogeneous network with Quality of Experience (QoE) is a challenging task, due to the great diversity of both mobile nodes and radio base stations of a heterogeneous network. To mitigate such factors, this paper presents a handover algorithm that considers QoE, Quality of Service (QoS) and channel quality in heterogeneous networks, known as handover aware of Quality of Service, Experience and Radio (SER). The proposed algorithm considers the Analytic Hierarchy Process (AHP) to adjust the degree of importance of each criteria in choosing the appropriate radio base station that the mobile node must connect to, allowing a more efficient handover decision for video transmission with QoE support. Simulation results show that SER handover delivered videos with QoE 15 % better compared to the algorithms found in the literature.