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The Impact of Preemptive Priority in GPRS on TCP Performance: A Measurement Study
Karlstad University, Division for Information Technology.
Karlstad University, Division for Information Technology.
Technology Dept., Pompeu Fabra University, Barcelona, Spain.
Telia Mobile AB, Karlstad, Sweden.
2004 (English)In: The first International Workshop on TCP and MAC Protocols in Wireless and Wired Networks, 2004, 430-436 p.Conference paper (Refereed)
Abstract [en]

GPRS extends the widely deployed GSM system with a more effecient wireless Internet access. In this paper we investigate how a TCP transmission over GPRS is affected when it loses all its resources due to preemption by circuit-switched calls with higher priority. The results indicate that TCP performance is degraded more than necessary, as buffered data is flushed immediately when the GPRS traffic is preempted. The time required for error recovery is considerable also for very short preemption periods. The situation would improve if data was buffered during preemption and if the data was transmitted immediately as GPRS resources become available again.

Place, publisher, year, edition, pages
2004. 430-436 p.
Keyword [en]
wireless internet, TCP, GPRS, preemtion
National Category
Computer Science
Research subject
Computer Science
URN: urn:nbn:se:kau:diva-24504OAI: diva2:598272
ICETE, Setubal, Portugal, August 2004
Available from: 2013-01-22 Created: 2013-01-22 Last updated: 2015-02-17Bibliographically approved

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