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Asplund, Katarina
Publications (10 of 14) Show all publications
Asplund, K. (2004). Implementation and Experimental Evaluation of aPartially Reliable Transport Protocol. (Licentiate dissertation). Karlstad: Karlstad University Studies
Open this publication in new window or tab >>Implementation and Experimental Evaluation of aPartially Reliable Transport Protocol
2004 (English)Licentiate thesis, monograph (Other academic)
Abstract [en]

In the last decade, we have seen an explosive growth in the deployment of multimedia applications on the Internet. However, the transport service provided over the Internet is not always feasible for these applications, since the network was originally designed for other types of applications. One way to better accommodate the service requirements of some of these applications is to provide a partially reliable transport service. A partially reliable transport service does not insist on recovering all, but just some of the packet losses, thus providing a lower transport delay than a reliable transport service. The work in this thesis focuses on the design, implementation, and evaluation of a partially reliable transport protocol called PRTP. PRTP has been designed as an extension to TCP in order to show that such a service could be effectively integrated with current protocol standards. An important feature of

PRTP is that all modifications for PRTP are restricted to the receiver side, which means that it could be very easily deployed. The thesis presents performance results from various experiments on a Linux implementation of PRTP. The results suggest that transfer times can be decreased significantly when using PRTP as opposed to TCP in networks in which packet loss occurs. Furthermore, the thesis includes a study that investigates how users perceive an application that is based on a partially reliable service. Specifically, how users select the trade-off between image quality and latency when they download Web pages is explored. The results indicate that many of the users in the study could accept less than perfect image quality if the latency could be shortened.

Place, publisher, year, edition, pages
Karlstad: Karlstad University Studies, 2004
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-20211 (URN)9185019755 (ISBN)
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2018-01-11
Asplund, K. & Brunström, A. (2004). Partially Reliable Multimedia Transport. Karlstad: Karlstad University Studies
Open this publication in new window or tab >>Partially Reliable Multimedia Transport
2004 (English)Report (Other academic)
Abstract [en]

The ongoing deployment of applications that transmit multimedia data makes it important for the Internet to better accommodate the service requirements of this type of applications. One approach is to provide a partially reliable service, i.e. a service that does not insist on recovering all but only some of the packet losses, thus providing less delay than a reliable transport service. This technical report describes a transport protocol that provides a partially reliable service. The protocol, called PRTP, is especially aimed at applications with soft real-time requirements. The report also presents performance results from a number of different experiments investigating different aspects of PRTP. The results indicate that transfer times can be significantly decreased when using PRTP as opposed to TCP when packets are lost in the network.

Place, publisher, year, edition, pages
Karlstad: Karlstad University Studies, 2004
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-22250 (URN)91-85019-69-0 (ISBN)
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2018-06-04
Asplund, K. & Brunstrom, A. (2004). Partially Reliable Multimedia Transport. Karlstad: Karlstads universitet
Open this publication in new window or tab >>Partially Reliable Multimedia Transport
2004 (English)Report (Other academic)
Place, publisher, year, edition, pages
Karlstad: Karlstads universitet, 2004. p. 16
Series
Karlstad University Studies, ISSN 1403-8099 ; 2004:5
National Category
Computer Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-2439 (URN)91-85019-69-0 (ISBN)
Available from: 2010-09-07 Created: 2010-09-07 Last updated: 2018-06-04Bibliographically approved
Asplund, K. & Brunström, A. (2003). The Trade-off Between Latency and Image Quality on the Web: A User Perspective. In: John Sören Pettersson (Ed.), : .
Open this publication in new window or tab >>The Trade-off Between Latency and Image Quality on the Web: A User Perspective
2003 (English)In: / [ed] John Sören Pettersson, 2003Chapter in book (Other academic)
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-24798 (URN)
Available from: 2013-01-22 Created: 2013-01-22 Last updated: 2018-06-04Bibliographically approved
Asplund, K. & Brunström, A. (2002). An Evaluation of User Web Service Requirements. Paper presented at Promote IT 2002, Skövde, Sweden, April 2002. Paper presented at Promote IT 2002, Skövde, Sweden, April 2002.
Open this publication in new window or tab >>An Evaluation of User Web Service Requirements
2002 (English)Conference paper, Published paper (Refereed)
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-16873 (URN)
Conference
Promote IT 2002, Skövde, Sweden, April 2002
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2018-06-04
Asplund, K. & Brunström, A. (2002). The QoS Trade-off Between Latency and Image Quality on the Web: A User Perspective. Paper presented at Proceedings IASTED International Conference on Communications, Internet, and Information Technology (CIIT 2002), November 18-20, 2002. Paper presented at Proceedings IASTED International Conference on Communications, Internet, and Information Technology (CIIT 2002), November 18-20, 2002.
Open this publication in new window or tab >>The QoS Trade-off Between Latency and Image Quality on the Web: A User Perspective
2002 (English)Conference paper, Published paper (Refereed)
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-24707 (URN)
Conference
Proceedings IASTED International Conference on Communications, Internet, and Information Technology (CIIT 2002), November 18-20, 2002
Available from: 2013-01-22 Created: 2013-01-22 Last updated: 2018-06-04
Asplund, K., Garcia, J., Brunström, A. & Schneyer, S. (2000). Decreasing Transfer Delay Through Partial Reliability. Paper presented at Proceedings Protocols for Multimedia Systems (PROMS 2000),Cracow, Poland, October 2000. Paper presented at Proceedings Protocols for Multimedia Systems (PROMS 2000),Cracow, Poland, October 2000.
Open this publication in new window or tab >>Decreasing Transfer Delay Through Partial Reliability
2000 (English)Conference paper, Published paper (Refereed)
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-18064 (URN)
Conference
Proceedings Protocols for Multimedia Systems (PROMS 2000),Cracow, Poland, October 2000
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2018-08-14
Brunström, A., Asplund, K. & Garcia, J. (2000). Enhancing TCP Performance by Allowing Controlled Loss. Paper presented at Proceedings SSGRR 2000 Computer & eBusiness Conference , L'Aquila, Italy, August, 2000. Paper presented at Proceedings SSGRR 2000 Computer & eBusiness Conference , L'Aquila, Italy, August, 2000.
Open this publication in new window or tab >>Enhancing TCP Performance by Allowing Controlled Loss
2000 (English)Conference paper, Published paper (Refereed)
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-18896 (URN)
Conference
Proceedings SSGRR 2000 Computer & eBusiness Conference , L'Aquila, Italy, August, 2000
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2018-08-14
Schneyer, S., Garcia, J., Brunström, A. & Asplund, K. (1999). PRTP: A Partially Reliable Transport Protocol for Multimedia Applications. Paper presented at Presenterad vid: Proceedings Int. Symposium on Intelligent Multimedia and Distance Education (ISIMADE),, Baden-Baden, Germany, August 1999. Paper presented at Presenterad vid: Proceedings Int. Symposium on Intelligent Multimedia and Distance Education (ISIMADE),, Baden-Baden, Germany, August 1999.
Open this publication in new window or tab >>PRTP: A Partially Reliable Transport Protocol for Multimedia Applications
1999 (English)Conference paper, Published paper (Refereed)
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-22676 (URN)
Conference
Presenterad vid: Proceedings Int. Symposium on Intelligent Multimedia and Distance Education (ISIMADE),, Baden-Baden, Germany, August 1999
Available from: 2013-01-22 Created: 2013-01-22 Last updated: 2018-08-14
Schneyer, S., Garcia, J., Brunstrom, A. & Asplund, K. (1999). PRTP: A Partially Reliable Transport Protocol for Multimedia Applications. In: Proceedings of ISIMADE.
Open this publication in new window or tab >>PRTP: A Partially Reliable Transport Protocol for Multimedia Applications
1999 (English)In: Proceedings of ISIMADE, 1999Conference paper, Published paper (Other academic)
National Category
Computer Systems
Identifiers
urn:nbn:se:kau:diva-2438 (URN)
Available from: 2010-09-07 Created: 2010-09-07 Last updated: 2018-08-14Bibliographically approved
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