NDLI: Large-scale RTT measurements from an operational UMTS/GPRS network

Content Provider	IEEE Xplore Digital Library
Author	Vacirca, F. Ricciato, F. Pilz, R.
Copyright Year	2005
Description	Author affiliation: Telecommun. Res. Center Vienna, Austria (Vacirca, F.; Ricciato, F.; Pilz, R.)
Abstract	In this paper we present some observations about TCP RTT as captured in the live traffic of an operational GPRS/UMTS network. RTT samples are extracted from traces collected by passive monitoring the Gn interfaces of one of the major providers in Austria, EU. We compare results for GPRS and UMTS, and expose some methodological issues involved in performing this type of analysis, for instance the potential bias introduced by heavy users. We also explore the correlation of RTT with time-of-day. The primary motivation for this research is to gain a better understanding of the dominant causes that shape the behaviour and the distribution of RTT across the TCP connections that populate a GPRS/UMTS network. The results presented here are useful for the scientific community, for instance to set more realistic simulation scenarios for other research activities. In addition, RTT measurements as obtained by large-scale passive monitoring can be used in combination with other indicators to build a summary indicator of the performances experienced by the TCP users at the scale of the whole network, i.e. a global RTT-based KPI (key performance indicator).
Starting Page	190
Ending Page	197
File Size	768119
Page Count	8
File Format	PDF
ISBN	076952382X
DOI	10.1109/WICON.2005.19
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-10
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance evaluation Condition monitoring Ground penetrating radar Portable computers 3G mobile communication Telecommunication traffic Telephone sets Time measurement Large-scale systems Performance analysis
Content Type	Text
Resource Type	Article

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