Cost minimization study in the client-server transmission of semi-elastic flows using Internet

Because the dramatic growth of the Internet and the requirement of quality of service (QoS) guaranties for the new and future applications, is essential that the Internet that ensures end-to-end QoS. To provide this level of QoS, many protocols have evolved in the last years, and some end-to-end QoS architectures have been proposed to appropriately mix all of these protocols. Also, it is necessary to classify applications by its QoS requirements to understand how they may reserve resources from the network. We review the existing end-to-end QoS protocols and an end-to-end QoS architecture that combines all of them. In addition, we classify Internet data flows by their QoS requirements. We focus our interest on the study of semi-elastic flows and the minimization of their transmission cost. We use a client-server system implementation in the Network Simulator 2 to transmit these flows while reducing the cost to demonstrate that our analytical study can be used in a real scenario in an efficient manner to minimize the cost.