CoBF: Coordinated Beamforming in Dense mmWave Networks
CoBF: Coordinated Beamforming in Dense mmWave Networks
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CoBF：密集毫米波网络中的协调波束成形
DOI：
10.1145/3578338.3593531
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Zheng, Zizhan
中科院分区：
文献类型：
--
作者：
Zhang, Ding;Santhalingam, Panneer Selvam;Pathak, Parth;Zheng, Zizhan
凭借MIMO和增强的波束成形功能，IEEE 802.11ay有望创建下一代可提供超过100 Gbps数据速率的毫米波WLAN。然而，密集部署的AP和客户端之间的波束成形会产生不可接受的开销。另一方面，缺乏最新的波束成形信息限制了通过MIMO和多用户可用的分集增益，降低了整体网络容量。本文提出了一种新的方法“协调波束成形”（称为CoBF），只有一个小的AP子集被选择用于波束成形在802.11ay毫米波无线局域网。基于不确定性的概念，CoBF预测的AP的波束成形信息可能是过时的，需要更新。所提出的方法补充了现有的每链路波束成形解决方案，并将其有效性从链路级扩展到网络级。此外，CoBF利用AP不确定性来通过802.11ay WLAN中的干扰感知调度来创建MU-MIMO组。通过大量的实验和仿真，我们表明，CoBF可以显着降低波束赋形开销，提高网络容量的802.11ay无线局域网。
With MIMO and enhanced beamforming features, IEEE 802.11ay is poised to create the next generation of mmWave WLANs that can provide over 100 Gbps data rate. However, beamforming between densely deployed APs and clients incurs unacceptable overhead. On the other hand, the absence of up-to-date beamforming information restricts the diversity gains available through MIMO and multi-users, reducing the overall network capacity. This paper presents a novel approach of "coordinated beamforming" (called CoBF) where only a small subset of APs are selected for beamforming in the 802.11ay mmWave WLANs. Based on the concept of uncertainty, CoBF predicts the APs whose beamforming information is likely outdated and needs updating. The proposed approach complements the existing per-link beamforming solutions and extends their effectiveness from link-level to network-level. Furthermore, CoBF leverages the AP uncertainty to create MU-MIMO groups through interference-aware scheduling in 802.11ay WLANs. With extensive experimentation and simulations, we show that CoBF can significantly reduce beamforming overhead and improve network capacity for 802.11ay WLANs.
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