Modeling and Simulation of Reconfigurable Intelligent Surfaces for Hybrid Aerial and Ground-based Vehicular Communications
Modeling and Simulation of Reconfigurable Intelligent Surfaces for Hybrid Aerial and Ground-based Vehicular Communications
复制标题
用于混合空中和地面车辆通信的可重构智能表面的建模和仿真
DOI：
10.1145/3479239.3485700
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
C. Wietfeld
中科院分区：
文献类型：
--
作者：
Karsten Heimann;Benjamin Sliwa;Manuel Patchou;C. Wietfeld
随着自动驾驶水平的提高和智能交通系统（ITS）的未来应用，车辆通信的需求也在增长。除了对高容量无线电链路的不断增长的需求之外，可靠性和延迟约束也对移动的网络供应提出了挑战。虽然例如毫米波频谱和太赫兹频带提供了大量的无线电资源，但由于微妙的无线电信道条件和信号传播特性，它们的适用性受到限制。作为未来ITS基础设施的智能无线电环境（SRE）的一部分，可重构智能表面（RISs）通过有目的地培养无源反射来改善无线电链路质量。这样，被阻挡的毫米波或太赫兹波束可以通过RIS反射路径在障碍物周围被引导，以改善否则有限的覆盖范围。在这篇文章中，提出了RIS增强的车辆通信的应用用例。除了在建筑物的外墙上静态部署RIS之外，无人驾驶飞行器（UAV）可以根据需要提供反射能力，而未来的飞行器可以-在一个有远见的方法中-由超材料组成，允许在丰富的SRE中机会性地利用它们。基于我们的多尺度移动性和网络仿真模型的案例研究的结果清楚地突出了RIS部署混合车辆通信场景的潜力。路径损耗和中断百分比可以大大降低。
The requirements of vehicular communications grow with increasing level of automated driving and future applications of intelligent transportation systems (ITS). Beside the ever-increasing need for high capacity radio links, reliability and latency constraints challenge the mobile network supply. While for example the millimeter-wave spectrum and THz-bands offer a vast amount of radio resources, their applicability is limited due to delicate radio channel conditions and signal propagation characteristics. Reconfigurable intelligent surfaces (RISs) as part of smart radio environments (SREs) of future ITS infrastructure promise improved radio link qualities by means of purposeful cultivation of passive reflections. With this, obstructed mmWave or THz beams can be guided around obstacles through RIS reflection paths to improve the otherwise limited coverage. In this article, application use cases of RIS-enhanced vehicular communications are proposed. Beside static deployments of RISs at exterior walls of buildings, unmanned aerial vehicles (UAV) could provide reflection capabilities on demand, while future vehicles could - in a visionary approach - consist of meta-material allowing for their opportunistic utilization within an enriched SRE. Results of a case study based on our multi-scale mobility and network simulation model clearly highlight the potential of RIS deployment for hybrid vehicular communication scenarios. Path loss and outage percentages can be reduced considerably.
DOI：
10.1109/globecom38437.2019.9013626
发表时间：
2019-08
期刊：
2019 IEEE Global Communications Conference (GLOBECOM)
影响因子：
--
作者：
Qianqian Zhang;W. Saad;M. Bennis
通讯作者：
Qianqian Zhang;W. Saad;M. Bennis