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A Channel Bonding Based QoS-Aware OFDMA MAC Protocol for the Next Generation WLAN

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Abstract

The IEEE 802.11ax, which was approved by the IEEE Standards Association (IEEE-SA) in March, 2014 as the next generation Wireless Local Area Network (WLAN) standard, has rigorous requirements in terms of high throughput and Quality of Service (QoS) support in the dense user scenario. To achieve high throughput by utilizing the wide bandwidth while decreasing the collision probability among stations, a Channel Bonding based QoS-aware Orthogonal Frequency Division Multiple Access (OFDMA) MAC protocol (CBQO) is proposed in this paper. Based on the combination of channel bonding and OFDMA, the capability of reducing collision probability in the dense user scenario is enhanced compared to the traditional OFDMA based MAC protocol, since the amount of subchannels is improved several times by the introduction of the channel bonding, and the wide channel provided by channel bonding are efficiently allocated among stations according to their QoS requirements, as the OFDMA provides a flexible and fine-grained management of the channel resource. Simulation results show that the proposed protocol outperforms the IEEE 802.11ac MAC protocol in terms of both throughput and delay of video traffic.

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Notes

  1. For more literatures on adopting OFDMA in WLAN, one can refer to our survey paper [9].

  2. The studies of tuning the parameters of the CBQO protocol according to the number of stations is out of the scope of this paper, and left as future work.

References

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Acknowledgment

This work was supported in part by the National Natural Science Foundations of CHINA (Grant No. 61271279, 61201157, and 61501373), the National 863 plans project (Grant No. 2014AA01A707, and 2015AA011307), the National Science and Technology Major Project (Grant No. 2015ZX03002006-004, 2016ZX03001018-004), and the Fundamental Research Foundation of NPU (Grant No. 3102015ZY038, 3102015ZY039).

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Authors and Affiliations

  1. School of Electronics and Information, Northwestern Polytechnical University, Xi’an, China

    Hu Zhou, Bo Li, Zhongjiang Yan & Mao Yang

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  1. Hu Zhou
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  2. Bo Li
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  3. Zhongjiang Yan
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  4. Mao Yang
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Correspondence to Zhongjiang Yan.

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Zhou, H., Li, B., Yan, Z. et al. A Channel Bonding Based QoS-Aware OFDMA MAC Protocol for the Next Generation WLAN. Mobile Netw Appl 22, 19–29 (2017). https://doi.org/10.1007/s11036-015-0670-8

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  • DOI: https://doi.org/10.1007/s11036-015-0670-8

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