Accommodating LAA Within IEEE 802.11ax WiFi Networks for Enhanced Coexistence
Accommodating LAA Within IEEE 802.11ax WiFi Networks for Enhanced Coexistence
复制标题
在 IEEE 802.11ax WiFi 网络中容纳 LAA 以增强共存
DOI:
10.1109/twc.2020.3014425
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发表时间:
2020-11
影响因子:
10.4
通讯作者:
Ding Zhi
中科院分区:
文献类型:
--
作者:
Chen Qimei;Ding Zhi
Given the abundance of unlicensed spectrum in 5 GHz band, licensed-assisted-access (LAA) technology presents an efficient and simple approach to alleviate the spectrum crunch in wireless networks. The recent proposal of IEEE 802.11ax as an advanced WiFi standard to accommodate more high rate connections motivates the investigation with respect to the feasibility and benefits of LAA in coexistence with unlicensed user access under this new WiFi protocol. In this article, we first introduce an enhanced LAA and WiFi coexistence mechanism based on spatial multi-stream transmission within IEEE 802.11ax access. We then derive a stream selection and user replacement strategy based on the proposed synchronous coexistence scheme to improve LAA performance without sacrificing WiFi throughput. We further present a Lyapunov algorithm to optimize the LAA access intensity level with rapid convergence and low-complexity. Numerical results demonstrate the effectiveness of the proposed algorithms, and the mutual benefits of the proposed coexistence framework to both LAA and WiFi users.
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影响因子:
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DOI:
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