Elastic calls in an integrated services network: the greater the call size variability the better the QoS

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We study a telecommunications network integrating prioritized stream calls and delay tolerant elastic calls that are served with the remaining (varying) service capacity according to a processor sharing discipline. The remarkable observation is presented and analytically supported that the expected elastic call holding time is decreasing in the variability of the elastic call size distribution. As a consequence, network planning guidelines or admission control schemes that are developed based on deterministic or lightly variable elastic call sizes are likely to be conservative and inefficient, given the commonly acknowledged property of e.g. WWW documents to be heavy tailed. Application areas of the model and results include fixed IP or ATM networks and mobile cellular GSM/GPRS and UMTS networks.
Original languageUndefined
Place of PublicationEnschede
PublisherUniversity of Twente, Faculty of Mathematical Sciences
Number of pages25
Publication statusPublished - 2002

Publication series

NameMemorandum Faculty of Mathematical Sciences
PublisherUniversity of Twente, Faculty of Mathematical Sciences
ISSN (Print)0169-2690


  • MSC-90B22
  • MSC-60K25
  • IR-65805
  • EWI-3438
  • METIS-206700
  • MSC-90B18

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