Tony Putman

QoS control for streaming service in UMTS networks

This paper addresses the end-to-end quality of service (QoS) architecture and mechanisms for Universal Mobile Telecommunications System (UMTS) networks. It presents specific QoS control mechanisms and algorithms for network performance engineering for real time services, in particular streaming applications. The paper concentrates on QoS control in the UMTS terrestrial radio access network (UTRAN) since it is often a bottleneck in end-to-end UMTS bearer performance, especially in the initial stages of network deployment. It discusses several QoS implementation mechanisms, including air interface resource and congestion control, call admission control, mobility control, backhaul bandwidth management, and network element queuing control. Simulation results are presented to show the effectiveness of these controls, and ways they can be used to guarantee streaming bearer performance. In addition, real measurement results are given for a commercial end-to-end UMTS network.