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Capacity enhancement for a rate-variance-envelop-based admission control in IEEE 802.11e HCCA WLANs

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Abstract

A rate-variance-envelop-based admission control (RVAC) has previously been proposed for IEEE 802.11e wireless networks. By leveraging the multiplexing gain of variable bit rate traffic, RVAC enjoys high network utilization. However, it may suffer from capacity loss due to large polling overheads, and its conservative approach to ensure the quality of service. To overcome these issues, we propose a per-flow polling scheme and derive the capacity by utilizing a stochastic ON–OFF model together with a D/G/1 model. The advantages of our method over RVAC are demonstrated through both analytical and simulation results in respect to the system capacity.

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Notes

  1. Like RVAC [16], we consider only the aggregate of traffic for mathematical tractability. It should be noted that by traffic aggregation, service differentiation can no longer be possible.

  2. Obviously, \(K\) has an upper bound, which makes \(T_f/K\) equal to the duration of a single bit.

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Authors and Affiliations

  1. Department of Applied Electronics Technology, National Taiwan Normal University, Taipei, 10610, Taiwan, ROC

    Jeng-Ji Huang & Chung-Yen Su

  2. Department of Electrical Engineering, National Chiayi University, Chiayi City, 60004, Taiwan, ROC

    Yao-Jen Liang

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  1. Jeng-Ji Huang
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Correspondence to Yao-Jen Liang.

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Huang, JJ., Liang, YJ. & Su, CY. Capacity enhancement for a rate-variance-envelop-based admission control in IEEE 802.11e HCCA WLANs. Wireless Netw 21, 2253–2261 (2015). https://doi.org/10.1007/s11276-015-0912-5

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