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Improved utilization for joint HCCA–EDCA access in IEEE 802.11e WLANs

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Abstract

This paper presents a model for improving utilization in IEEE 802.11e wireless LAN via a Markov decision process (MDP) approach. A Markov chain tracking the utilized transmission window for two separate access mechanisms is devised. Subsequently, the action space and the rewards of the MDP are judiciously selected with the aim of improving overall utilization without explicit blocking. The proposed MDP model for 802.11e reveals that proportional allocation of access opportunities improve overall utilization compared to completely randomized access. Simulation results go on to show that a policy that limits HCCA access as a function of channel load improves utilization by an average 8 %. The optimization framework proposed in this paper is promising as a practical decision support tool for resource planning in 802.11e.

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Authors and Affiliations

  1. France Telecom, Sophia Antipolis, 06560, France

    Bryan Ng

  2. Multimedia University, Cyberjaya, Selangor, 63000, Malaysia

    Y. F. Tan

  3. Tan Chong Motor Holdings, 64 Canning Highway, Victoria Park, 6100, Perth, Australia

    Yong Roger

Authors
  1. Bryan Ng
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  2. Y. F. Tan
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  3. Yong Roger
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Correspondence to Bryan Ng.

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Ng, B., Tan, Y.F. & Roger, Y. Improved utilization for joint HCCA–EDCA access in IEEE 802.11e WLANs. Optim Lett 7, 1711–1724 (2013). https://doi.org/10.1007/s11590-012-0517-1

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  • DOI: https://doi.org/10.1007/s11590-012-0517-1

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