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Downlink AP coordination based OFDMA and NOMA protocols for the next-generation WLANs

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Abstract

In recent years, with the increasing number of terminal connections, high-density deployment scenarios have become important scenarios for future wireless networks. Ultra-high throughput (EHT) in high density deployment scenarios is the technical goal of IEEE 802.11be, the next-generation wireless local area network (WLAN) standard. However, in a high-density deployment scenario, interference suppression between BSSs is serious, which seriously affects the throughput of a WLAN. And the resources available are limited. Therefore, for the next generation WLAN standard, this paper proposes a downlink transmission scheme based on AP coordination and the orthogonal frequency division multiple access (OFDMA) protocol and the non-orthogonal multiple access (NOMA) protocol, named Co-OFDMA–NOMA scheme. The core idea is to transform the interference and suppression relationship between neighboring BSSs into the relationship of mutual coordination and assistance through the Co-OFDMA–NOMA protocol proposed in this paper. Firstly, a downlink transmission scheme named the Co-OFDMA–NOMA protocol is designed. In addition, the protocol and its framework structure have good backward compatibility. Theoretical analysis shows that the proposed Co-OFDMA–NOMA protocol has significant performance gain, and simulation results prove the effectiveness of the scheme.

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Acknowledgements

This work was supported in part by the National Natural Science Foundations of CHINA (Grant Nos. 61871322, 61771390 and 61771392), and Science and Technology on Avionics Integration Laboratory and the Aeronautical Science Foundation of China (Grant Nos. 20185553035 and 201955053002).

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Authors and Affiliations

  1. School of Electronics and Information, Northwestern Polytechnical University, **’an, 710072, Shaanxi, People’s Republic of China

    Yan Zhenzhen, Li Bo, Yang Mao & Yan Zhongjiang

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  1. Yan Zhenzhen
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  2. Li Bo
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  4. Yan Zhongjiang
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Correspondence to Yang Mao.

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Zhenzhen, Y., Bo, L., Mao, Y. et al. Downlink AP coordination based OFDMA and NOMA protocols for the next-generation WLANs. Wireless Netw (2023). https://doi.org/10.1007/s11276-023-03275-y

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