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An analytic model for Throughput Optimal Distributed Coordination Function (TO-DCF)

Author

Listed:
  • Emma Fitzgerald

    (Lund University)

  • Ulf Körner

    (Lund University)

  • Bjorn Landfeldt

    (Lund University)

Abstract

TO-DCF, a new backoff scheme for 802.11, has the potential to significantly increase throughput in dense wireless LANs while also opportunistically favouring nodes with heavier traffic loads and/or better channel conditions. In this paper we present an analytical model to investigate the behaviour and performance of the TO-DCF protocol with regards to operating parameters such as the number of nodes, the contention window size and the backoff countdown probabilities. We then compare numerical results from an implementation of our model with simulations. Our model shows a high level of accuracy, even when the model assumptions are relaxed, and provides guidance for network operators to correctly configure the weight functions for nodes running TO-DCF given the network’s operating conditions.

Suggested Citation

  • Emma Fitzgerald & Ulf Körner & Bjorn Landfeldt, 2017. "An analytic model for Throughput Optimal Distributed Coordination Function (TO-DCF)," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 66(2), pages 197-215, October.
    • Handle: RePEc:spr:telsys:v:66:y:2017:i:2:d:10.1007_s11235-017-0275-6
    DOI: 10.1007/s11235-017-0275-6
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    Cited by:

    1. Mohsen Maadani, 2019. "Reanalyzing a simplified Markov model for the low-density P2P wireless sensor and actuator networks," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 70(2), pages 159-169, February.

    More about this item

    Keywords

    Wireless LAN; MAC; 802.11; CSMA;
    All these keywords.

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