Weighted Round-Robin in multimedia networks

This paper deals with the measurement of the performance of DiffServ queueing methods, especially with the Weighted Round-Robin (WRR) queueing system. These methods can ensure quality for several traffic classes for a large group of customers. But if the network load goes to its limits the quality parameters can get worse. To avoid the quality parameters fall down the engineer have to consider overall bandwidth needs for the transmitted services and suppress traffic with the lowest priority.