Performance analysis of wireless LANs: an integrated packet/flow level approach

R. Litjens*, F. Roijers, J.L. van den Berg, R.J. Boucherie, M.J. Fleuren

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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In this paper we present an integrated packet/flow level modelling approach for analysing flow throughputs and transfer times in IEEE 802.11 WLANs. The packet level model captures the statistical characteristics of the transmission of individual packets at the MAC layer, while the flow level model takes into account the system dynamics due to the initiation and completion of data flow transfers. The latter model is a processor sharing type of queueing model reflecting the IEEE 802.11 MAC design principle of distributing the transmission capacity fairly among the active flows. The resulting integrated packet/flow level model is analytically tractable and yields a simple approximation for the throughput and flow transfer time. Extensive simulations show that the approximation is very accurate for a wide range of parameter settings. In addition, the simulation study confirms the attractive property following from our approximation that the expected flow transfer delay is insensitive to the flow size distribution (apart from its mean).
Original languageEnglish
Title of host publicationProviding Quality of Service in Heterogeneous Environments
Subtitle of host publicationProceedings of the 18th International Teletraffic Congress - ITC-18, 31 August-5 September 2003, Berlin, Germany
EditorsJ. Charzinski, R. Lehnert, P. Tran-Gia
Number of pages18
ISBN (Print)978-0-444-51455-4
Publication statusPublished - 2003
Event18th International Teletraffic Congress 2003: Providing QoS in Heterogeneous Environments - Berlin, Germany
Duration: 31 Aug 20035 Sep 2003
Conference number: 18

Publication series

NameTeletraffic Science and Engineering
ISSN (Print)1388-3437


Conference18th International Teletraffic Congress 2003
Abbreviated titleITC 2003
Internet address


  • Processor sharing models
  • Performance analysis
  • Wireless LANs
  • Quality of Service (QoS)
  • IEEE 802.11


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