Proactive Application/Network QoS Management

Despite a great and continuous growth of network capacities, it is not probable that the problems of network congestion would be solved or relieved, because of the simultaneous growth of users and new resources starving applications. To insure a particular level of the Quality of Service (QoS), the network must be capable to manage its resources. Variations of QoS as well as QoS degradations are not necessarily caused by overall traffic in the network, but they can also be a consequence of using user devices with different possibilities, different networks, or mobile devices. The end system has to compensate these variations and insure the user with the acceptable quality of service. In the last few years several network architectures were proposed to serve these new applications and achieve a satisfactory QoS. In this paper we propose an architecture model that can efficiently manage network resources on the network side and also proactively adapt to application demands and QoS degradation.