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A Line-of-Sight probability model for VANETs

机译：VANET的视线概率模型

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摘要

Simulation has become an important method for the evaluation of Vehicular Ad-Hoc Network (VANET) applications and protocols. These simulations often work on the link level with simulation time far off from wall clock time, making them impracticable to be deployed for the performance analysis of real hardware in Hardware-In-The-Loop (HIL) environments or prototype vehicles. Probabilistic communication models can help in this regard, however often suffer from considerably lower accuracy than link-level simulations. It was shown that determining whether a communication link is of Line-of-Sight (LOS) or Non-Line-of-Sight (NLOS) nature greatly increases the quality of probabilistic communication models. This paper presents such an LOS probability model for VANETs in urban and rural environments. We find that typical urban environments such as rural, urban, and industrial areas show similar characteristics across different German and European cities. We utilize this to derive a probabilistic LOS model that reliably predicts LOS constellations and outperforms related work. Our model therefore enables the development of accurate probabilistic packet success or packet arrival rate models to investigate VANET technology in real-time environments.
机译：仿真已成为评估车载Ad-Hoc网络（VANET）应用程序和协议的重要方法。这些仿真通常在链接级别上进行，仿真时间与挂钟时间相去甚远，因此无法将它们部署在硬件在环（HIL）环境或原型车中对实际硬件的性能分析。概率通信模型可以在这方面提供帮助，但是，与链接级别的仿真相比，准确性通常要低得多。结果表明，确定通信链路是视线（LOS）还是非视线（NLOS）性质极大地提高了概率通信模型的质量。本文提出了一种用于城乡环境中的VANET的LOS概率模型。我们发现，典型的城市环境（如农村，城市和工业区）在德国和欧洲不同的城市中表现出相似的特征。我们利用它来推导出概率性LOS模型，该模型可以可靠地预测LOS星座并胜过相关工作。因此，我们的模型可以开发准确的概率数据包成功率或数据包到达率模型，以研究实时环境中的VANET技术。

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