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Impact of Partial Reliability on Web Image Transport Performance
Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT.
Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT.
2002 (English)Conference paper, (Refereed)
Abstract [en]

This paper reports on experiments with a web-browsing application using

PRTP, a new TCP-based protocol. With PRTP it is possible for an application to

specify, and receive, a more flexible transport service than with TCP or UDP. A web

application using PRTP is presented, and experiments examining the performance implications

of using PRTP instead of TCP are discussed. The experiments used actual

implementations of TCP and PRTP to conduct web page transfers over a network capable

of emulating different network characteristics. The JPEG part of the web pages

were recoded using a robust JPEG coding and transmitted using the partially reliable

transport service made possible by PRTP. A novelty in these experiments was that the

packet loss could be controlled in detail, allowing specific packets in a stream to be lost as opposed to losing packets with a certain probability. The experiments were performed for five different network characteristics each at six different loss ratios using three different web pages. The results show that using a partially reliable transport service in conjunction with the presented application provides throughput gains in the

majority of cases, at the expense of slightly degraded image quality. The gains relative to TCP are up to 41% with a mean of 7.2%.

Place, publisher, year, edition, pages
2002.
National Category
Computer Science
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kau:diva-20200OAI: oai:DiVA.org:kau-20200DiVA: diva2:593857
Conference
Promote IT 2002, Skövde, Sweden, April 2002
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2013-01-21

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