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Elektrotechnik & Informationstechnik (2006) 123/7/8: 288–296. DOI 10.1007/s00502-006-0362-y

Traffic monitoring and analysis in 3G networks: lessons learned from the METAWIN project
F. Ricciato, P. Svoboda, J. Motz, W. Fleischer, M. Sedlak, M. Karner, R. Pilz, P. Romirer-Maierhofer, E. Hasenleithner, W. Jager, P. Kruger, F. Vacirca, M. Rupp ¨ ¨

A 3G network is a magnificently complex object embedded in a highly heterogeneous and ever-changing usage environment. It combines the functional complexity of the wireless cellular paradigm with the protocol dynamics of TCP=IP networks. Understanding such an environment is more urgent and at the same time more difficult than for legacy 2G networks. Continuous traffic monitoring by means of an advanced system, coupled with routine expert-driven traffic analysis, provides an in-depth understanding of the status and performances of the network as well as of the statistical behaviour of the user population. Such knowledge allows for a better engineering and operation practice of the whole network, and specifically the early detection of hidden risks and emerging troubles. Furthermore, the exploitation of certain TCP=IP dynamic behaviour, particularly the TCP control-loop, coupled with information extracted from the 3GPP layers, provides a cost-effective means to monitor the status of the whole network without requiring access to all network elements. In this article the main lessons are summarized learned from a two-year research activity on traffic monitoring and analysis on top of an operational 3G network. Keywords: traffic monitoring; traffic analysis; 3G; cellular networks; GPRS; UMTS

Analyse und Monitoring von Datenverkehr in 3G Netzwerken: ein Erfahrungsbericht aus dem METAWIN-Projekt. Ein 3G-Mobilfunknetz stellt ein extrem komplexes Gebilde dar, das in ein stark heterogenes und standig wechselndes Umfeld…...

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