Uma proposta para a provisão de QoS em redes backbone UMTS

Abstract

With the growth of the demand of multimedia applications in the Internet and with the current backbones, it is expected that UMTS backbones support different applications with QoS requirements, mainly those which are sensitive to delays, packet losses and jitter. However, real time applications require proper mechanisms to guarantee QoS according to their specific characteristics. It is proposed in this work, the use of a mechanism based on the DiffServ model, which will classify and treat each packet in accordance to the needs which were previously established by its applications. Such proposal provides a differentiated treatment to the traffic of several flows in the network. The results reached from simulation and modeling showed that the use of the proposed mechanism treats the UMTS traffic classes in a differentiated way, offering a suitable level of QoS even under mobility conditions of the users.