Adaptive performance management for universal mobile telecommunications system networks

Authors:
Christoph Lindemann;Marco Lohmann;Axel Thümmler
Affiliations:
Department of Computer Science, University of Dortmund, August-Schmidt-Strasse 12, 44227 Dortmund, Germany;Department of Computer Science, University of Dortmund, August-Schmidt-Strasse 12, 44227 Dortmund, Germany;-
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking
Year:
2002

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Abstract

In this paper, we introduce a framework for the adaptive control of universal mobile telecommunications system (UMTS) networks in order to improve bandwidth utilization of the radio channels. The key contribution of the paper constitutes the introduction of a performance management information base for dynamically adjusting the packet scheduler and admission controller. Thus, the adaptive control framework closes the loop between network operation and network control. Furthermore, the adaptive control framework can effectively deal with the different time scales of packet scheduling and admission control. Moreover, we present a traffic model for non-real-time UMTS traffic based on measured trace data. The analysis and scaling process of the measured trace data with respect to different UMTS bandwidth classes constitutes the basic concept of this traffic characterization. Using this traffic model and simulation on the IP level, the gain of employing the adaptive control framework is illustrated by performance curves for various quality of service measures.