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Erschienen in:
2008 | OriginalPaper | Buchkapitel
QoS Measurements in IP-based Networks
verfasst von : René Serral-Gracià, Jordi Domingo-Pascual, Andrzej Bęben, Philippe Owezarski
Erschienen in: End-to-End Quality of Service Over Heterogeneous Networks
Verlag: Springer Berlin Heidelberg
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In order to support multimedia applications, a variety of QoS parameters must be supported for the respective data flows. These might include parameters such as delay, delay variation, bandwidth, jitter, packet loss etc., on the network level. Parameters can be defined on call (blocking probabilities, set-up latencies etc.) and user level (e.g., mean opinion scores) as well. The parameters must be well defined and appropriate measurement techniques are required to test whether the parameters are met by the selected network services. In particular, many approaches for passive and active measurements have been developed.