Analysis of Blockage Effects on Roadside Relay-Assisted mmWave Backhaul Networks
Analysis of Blockage Effects on Roadside Relay-Assisted mmWave Backhaul Networks
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DOI：
10.1109/icc.2019.8761486
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发表时间：
2019-05
期刊：
影响因子：
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通讯作者：
Yuchen Liu;D. Blough
中科院分区：
文献类型：
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作者：
Yuchen Liu;D. Blough
毫米波通信是一种非常有前途的 5G 无线回程技术。然而，由于毫米波信号对阻塞的敏感性，网络性能很难预测。在本文中，我们提出了一个分析框架，用于在先前提出的路边中继辅助毫米波回程的无干扰拓扑中纳入阻塞效应并评估阻塞鲁棒性。通过随机几何分析，根据拓扑参数和障碍物密度导出了先前工作中识别的四种类型堵塞的堵塞概率。通过分析拓扑参数对阻塞概率的影响，可以得出改进的拓扑结构，该拓扑结构保持了理想的无干扰特性，但比原始拓扑具有更好的阻塞鲁棒性。仿真结果表明，在使用相同数量的中继的情况下，修改后的拓扑可以保持非常高的吞吐量，并且与原始拓扑相比，鲁棒性显着提高。
mmWave communication is a highly promising technology for 5G wireless backhaul. However, network performance is hard to predict due to the sensitivity of mmWave signals to blockages. In this paper, we propose an analytical framework to incorporate blockage effects and evaluate blockage robustness within a previously proposed interference-free topology for roadside relay-assisted mmWave backhaul. Through stochastic geometric analysis, the blockage probabilities for four types of blockages identified in prior work are derived as a function of the topology parameters and obstacle density. Analysis of the effect of topology parameters on blockage probability yields insight that leads to a modified topology, which maintains the desirable interference-free property but has better blockage robustness than the original topology. Simulation results demonstrate that the modified topology can maintain very high throughput and has significantly improved robustness as compared to the original topology, while using the same number of relays.