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arXiv 2104.03754eess.SP
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下一代车载通信中的传感器辅助波束宽度和功率控制

Sensor-Aided Beamwidth and Power Control for Next Generation Vehicular Communications

Dario Tagliaferri, Mattia Brambilla, Monica Nicoli, Umberto Spagnolini

摘要:

需要超可靠的低延迟车联网(V2X)通信来满足增强型驾驶应用的极端要求。毫米波(24.25-52.6 GHz)或亚太赫兹(>100 GHz)V2X通信是一种可行的解决方案,前提是在车辆停放期间保持高度准直的光束对准。在这项工作中,我们提出了一个传感器辅助的动态波束宽度和功率控制(BPC)系统,以抵消车辆动态的不利影响,利用车载惯性和定位传感器收集的数据,通过并行的低速率链路在车辆之间相互交换,例如,5G新无线电(NR)频率范围1(FR 1)。拟议的BPC解决方案在传感器辅助波束对准和跟踪(BAT)系统之上工作,克服了固定波束宽度系统的局限性,并优化了具有挑战性的车辆到车辆(V2 V)场景的性能,即使扩展到车辆到基础设施(V2 I)用例是可行的。我们验证了传感器辅助的动态BPC的真实轨迹和传感器的数据收集一个专门的实验活动。我们的目标是显示所提出的BPC策略在高数据速率视距(LOS)V2 V环境中的优势,并概述传感器采样时间和精度方面的要求,以及控制信道上的端到端延迟。

英文摘要:

Ultra-reliable low-latency Vehicle-to-Everything (V2X) communications are needed to meet the extreme requirements of enhanced driving applications. Millimeter-Wave (24.25-52.6 GHz) or sub-THz (>100 GHz) V2X communications are a viable solution, provided that the highly collimated beams are kept aligned during vehicles' maneuverings. In this work, we propose a sensor-assisted dynamic Beamwidth and Power Control (BPC) system to counteract the detrimental effect of vehicle dynamics, exploiting data collected by on-board inertial and positioning sensors, mutually exchanged among vehicles over a parallel low-rate link, e.g., 5G New Radio (NR) Frequency Range 1 (FR1). The proposed BPC solution works on top of a sensor-aided Beam Alignment and Tracking (BAT) system, overcoming the limitations of fixed-beamwidth systems and optimizing the performance in challenging Vehicle-to-Vehicle (V2V) scenarios, even if extensions to Vehicle-to-Infrastructure (V2I) use-cases are feasible. We validate the sensor-assisted dynamic BPC on real trajectories and sensors' data collected by a dedicated experimental campaign. The goal is to show the advantages of the proposed BPC strategy in a high data-rate Line-Of-Sight (LOS) V2V context, and to outline the requirements in terms of sensors' sampling time and accuracy, along with the end-to-end latency on the control channel.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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