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

Remco Litjens, Frank Roijers, Hans van den Berg, Richard J. Boucherie, Maria Fleuren

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Abstract

In this paper we present an integrated packet/flow level modelling approach for analysing flow throughputs and transfer times in {\sc ieee} 802.11 {\sc wlan}s. The packet level model captures the statistical characteristics of the transmission of individual packets at the {\sc 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 {\sc ieee} 802.11 {\sc 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
Place of PublicationEnschede
PublisherUniversity of Twente
Number of pages19
Publication statusPublished - 2003

Publication series

NameMemorandum Faculty of Mathematical Sciences
PublisherUniversity of Twente, Department of Applied Mathematics
No.1676
ISSN (Print)0169-2690

Keywords

  • MSC-90B18
  • MSC-90B22
  • MSC-60K25
  • Wireless LANs
  • IEEE 802.11
  • Performance analysis
  • Quality of Service (QoS)
  • Processor sharing models

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

    Litjens, R., Roijers, F., van den Berg, J. L., Boucherie, R. J. & Fleuren, M. J., 2003, Providing Quality of Service in Heterogeneous Environments: Proceedings of the 18th International Teletraffic Congress - ITC-18, 31 August-5 September 2003, Berlin, Germany. Charzinski, J., Lehnert, R. & Tran-Gia, P. (eds.). Elsevier, p. 931-940 18 p. (Teletraffic Science and Engineering; vol. 5).

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