用于评估V2X应用的特定站点传播模型

Robert Protzmann, Bjorn Schunemann, I. Radusch
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引用次数: 3

摘要

在本文中,我们研究了紧急车辆逼近预警的用例,考虑了特定站点的传播特性。特别是在城市环境中,建筑物的存在会导致无线电信号的阴影特性。在传统的传播模型中,这些特性是用随机过程描述的。然而,对于每个单独的消息都很重要的警告用例的评估,随机模型可能过于简单。因此,我们实施了有效的光线追踪技术来识别发射机周围建筑物的特定位置。然后,我们采用了考虑阴影、穿透和衍射影响的模型来获得更准确的结果。随机模型与特定地点模型的比较表明,在我们的场景中,随机模型导致了过于乐观的传播条件。反过来,当应用特定地点模型时,我们可以依靠更可信的结果来实现接近的紧急车辆警告。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On site-specific propagation models for the evaluation of V2X applications
In this paper, we investigate the use case of an approaching emergency vehicle warning, considering site-specific propagation characteristics. Especially in urban environments, the presence of buildings leads to shadowing properties of the radio signal. In traditional propagation models, these properties are described with stochastic processes. However, for the evaluation of warning use cases where every individual message is important, stochastic models may be too simplistic. Therefore, we implemented efficient ray tracing techniques to identify the specific locations of buildings in the surrounding of the transmitter. Then, we employed adopted models that consider the effects of shadowing, penetration and diffraction to achieve a more accurate result. The comparison of the stochastic and the site-specific models showed that the stochastic models lead to overoptimistic propagation conditions in our scenario. In turn we can rely on a more credible result for the performance of the approaching emergency vehicle warning, when the site-specific models are applied.
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