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Chevul, Stefan
Publications (2 of 2) Show all publications
Wac, K., Arlos, P., Fiedler, M., Chevul, S., Isaksson, L. & Bults, R. (2007). Accuracy Evaluation of Application-level Performance Measurements. In: : . Paper presented at Next Generation Internet Networks. Trondheim: IEEE
Open this publication in new window or tab >>Accuracy Evaluation of Application-level Performance Measurements
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2007 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In many cases, application-level measurements can be the only way for an application to evaluate and adapt to the performance offered by the underlying networks. Applications perceive heterogeneous networking environments spanning over multiple administrative domains as black boxes being inaccessible for lower-level measurement instrumentation. However, application-level measurements can be inaccurate and differ significantly from the lower-level ones, amongst others due to the influence of the protocol stacks. In this paper we quantify and discuss such differences using the DPMI, with Measurement Points instrumented with DAG 3.5E cards for reference link-level measurements. We shed light on various impacts on timestamp accuracy of application-level measurements. Moreover, we quantify the accuracy of generating traffic with constant inter-packet-time. The latter is essential for an accurate emulation of application-level streaming traffic and thus for obtaining realistic end-to-end performance measurements.

Place, publisher, year, edition, pages
Trondheim: IEEE, 2007
National Category
Telecommunications
Identifiers
urn:nbn:se:bth-9254 (URN)oai:bth.se:forskinfo28B9A40A6111B0D5C12572F7002AAF3B (Local ID)1-4244-0856-3 (ISBN)oai:bth.se:forskinfo28B9A40A6111B0D5C12572F7002AAF3B (Archive number)oai:bth.se:forskinfo28B9A40A6111B0D5C12572F7002AAF3B (OAI)
External cooperation:
Conference
Next Generation Internet Networks
Note

http://cui.unige.ch/~wac/publications/

Available from: 2012-09-18 Created: 2007-06-11 Last updated: 2016-09-07Bibliographically approved
Eriksén, S., Eliasson, C., Fiedler, M., Chevul, S. & Ekelin, A. (2007). Mapping service quality: measuring and comparing quality of experience and quality of service for Internet-based map services. In: : . Paper presented at Proceedings of 30th Information Systems Research Seminar in Scandinavia, IRIS30. Tampere, Finland
Open this publication in new window or tab >>Mapping service quality: measuring and comparing quality of experience and quality of service for Internet-based map services
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2007 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we present an on-going research project in which we are focusing on examining how users of map-based services on-line experience the quality of these services when the traffic load is high, and how the users' experiences of acceptable or not acceptable quality can be related to measurable parameters which can be used to manage network traffic and improve technical solutions. The project is a multi- and interdisciplinary project in cooperation between researchers within human work science and informatics, and researchers within telecommunication systems. Additionally, there are two external partners in the project: a provider of Internet-based map services, and a municipality which uses this provider's map services regularly. One of the main methodological issues addressed in the project is how laboratory based, quantitative research methods from research on Quality of Service in the telecommunication systems area can be related to qualitative research methods focusing on workplace- or other live-world based use situations and Quality of Expereince as defined by users of the services. How can experiments and studies be designed, and results shared, such that both network traffic measuring and evaluation of user experiences retain their own paradigmatic validity and relevance, while fruitfully informing service design?

Abstract [sv]

Presentation av ett pågående forskningsprojekt där fokus ligger på hur man kan mäta användares upplevelser av tjänstekvalitet med både kvalitativa och kvantitativa metoder, för att därmed kunna utveckla mer effektiva metoder för mätning, övervakning och kontroll av tjänstekvalitet för krävande nätverkstjänster. Svenska nyckelord: tjänstekvalitet, upplevelsekvalitet, nyckelvärdesindikatorer, användningsorienterad utveckling, tjänstedesign

Place, publisher, year, edition, pages
Tampere, Finland: , 2007
Keywords
Quality of Service, Quality of Experience, Key Performance Indicators, Use-Oriented Design, Service Design
National Category
Telecommunications Human Aspects of ICT Computer Sciences
Identifiers
urn:nbn:se:bth-8907 (URN)oai:bth.se:forskinfo11BF466313CED894C125734400473495 (Local ID)978-951-44-7048-6 (ISBN)oai:bth.se:forskinfo11BF466313CED894C125734400473495 (Archive number)oai:bth.se:forskinfo11BF466313CED894C125734400473495 (OAI)
Conference
Proceedings of 30th Information Systems Research Seminar in Scandinavia, IRIS30
Note

Document available via the IRIS 30 website, see http://www.cs.uta.fi/~tarja/irisWG/cr1084241485017.pdf

Available from: 2012-09-18 Created: 2007-08-27 Last updated: 2018-01-11Bibliographically approved
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