Flow level performance approximations for elastic traffic integrated with prioritized stream traffic
conference paper
Almost all traffic in todays networks can be classified as being either stream or elastic. The support of these two traffic types is possible either with a Differentiated (DiffServ) or an Integrated Services (IntServ) architecture. However, both DiffServ and IntServ rely on efficient scheduling mechanisms and traffic control to meet the requirements of these traffic types. In order to meet the strict delay requirements of stream traffic, the choice of priority scheduling is inevitable. The danger with priority scheduling lies in its potential starvation of lower priority traffic classes for example the elastic traffic class. Therefore, it is essential to understand and capture the relation between stream and elastic traffic behaviour, priority scheduling and traffic control. In this paper we focus on developing simple yet effective approximations to capture this relationship. We assess the accuracy of the approximation against simulations and and other well-known simple and straightforward techniques for a wide range of parameters. Results show that our proposed technique is a considerable improvement to other approximation methods and at the same time provides useful insight into various network and traffic parameters.
Topics
Approximation theoryMetropolitan area networksNetwork architectureNetwork protocolsPolynomial approximationQuality of serviceQueueing networksSchedulingScheduling algorithmsTelecommunicationVideo signal processingApproximation methodsdelay requirementsDiff-ServEfficient schedulingElastic trafficFlow-level performanceIntegrated Services (IntServ)Priority schedulingtraffic parametersWide-rangeComputer networks
TNO Identifier
240495
Publisher
IEEE
Source title
Networks 2006: 12th International Telecommunications Network Strategy and Planning Symposium, 6-9 November 2006, New Delhi,India
Place of publication
Piscataway, NJ
Files
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