Uplink Resource Allocation in IEEE 802.11ax

Uplink Resource Allocation in IEEE 802.11ax
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DOI:
10.1109/icc.2019.8761594
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发表时间:
2019-05
期刊:
ICC 2019 - 2019 IEEE International Conference on Communications (ICC)
影响因子:
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通讯作者:
Sudeep Bhattarai;Gaurang Naik;J. Park
Sudeep Bhattarai;Gaurang Naik;J. Park
中科院分区:
其他
文献类型:
--
作者:
Sudeep Bhattarai;Gaurang Naik;J. Park

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即将到来的无线保真(Wi-Fi)标准(即IEEE 802. 11 ax)的显著特征之一是使用多用户正交频分多址(MU-OFDMA)。MU-OFDMA促进多个用户在较小的子信道(也称为资源单元(罗斯)),从而提高802.11ax MAC效率。802.11ax MAC通过使用两种类型的罗斯来实现上行链路(UL)中的MU-OFDMA传输:i)随机接入(RA)罗斯,以及ii)调度接入(SA)罗斯。在本文中,我们研究了RA RU和SA RU的不同分布对MAC层性能的影响。我们利用我们的分析,设计一个实用的UL RU分配方案,最大限度地提高整体802.11ax网络吞吐量。我们在网络模拟器-3(NS-3)中实现了802.11ax MAC,并进行了大量的模拟,以验证我们提出的方案的有效性。
One of the notable features of the upcoming Wireless Fidelity (Wi-Fi) standard—namely, IEEE 802.11ax—is the use of Multi-User Orthogonal Frequency Division Multiple Access (MU-OFDMA). MU-OFDMA facilitates multiple users to transmit simultaneously in smaller sub-channels (a.k.a. resource units (RUs)), thereby improving the 802.11ax MAC efficiency. The 802.11ax MAC enables MU-OFDMA transmissions in the uplink (UL) by using two types of RUs: i) Random Access (RA) RUs, and ii) Scheduled Access (SA) RUs. In this paper, we investigate the impact of different distributions of RA RU and SA RU on the MAC layer performance. We leverage our analysis in devising a practical UL RU allocation scheme that maximizes the overall 802.11ax network throughput. We implement the 802.11ax MAC in network simulator-3 (NS-3) and perform extensive simulations to validate the efficacy of our proposed scheme.