2010

paper

english

EN The paper presents problems of QoS (Quality of Service) predictability of network services (mainly in WAN environment). In the first part we present general remarks on QoS predictability problem, mentioning some research projects and available resources. The main part of the paper deals with QoS predictability in long-term as well as short-term viewpoints. We will try to answer a question: is it possible to predict network QoS/performance level with a use of statistical data from the past? The term quality of service has many meanings ranging from the user’s qualitative perception of the service to a set of quantitative connection parameters (RTT (Round Trip Time), throughput, loss packet rate) necessary to achieve particular service quality. In the paper we will mostly use the second meaning of the term based on RFC 2386 [1]. Analyzed, statistical data on Internet performance are taken from the IEPM (Internet End-to-end Performance Measurement) database.

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10.1007/978-3-642-13861-4_16

https://link.springer.com/chapter/10.1007/978-3-642-13861-4_16

Computer Networks : 17th Conference, CN 2010, Ustron, Poland, June 15-19, 2010 : Proceedings

17th International Conference on Computer Networks, CN 2010, 15-19.06.2010, Ustroń, Polska