LoRa, a Low Power Wide Area Network (LPWAN) technology, demands reduced network infrastructure to cover a large area, with low power consumption. In the context of vehicular communications, LoRa has the potential to support monitoring and cooperative navigation applications, where small amounts of data can be transmitted asynchronously through the network. Nevertheless, the literature lacks evaluations of LoRa in the context of vehicular communications. Thus, in this paper we analyze the performance of this technology operating in an urban mobility environment, using LoRa terminal devices embarked on vehicles and a LoRa receiver unit, acting as infrastructure. Moreover, we evaluate the equivalence between experimental and simulated results, obtained from the communication link between the LoRa module inside a vehicle and a LoRa receiver comparing to those produced by NS-3 simulations. Three metrics of interest are evaluated: Packet Delivery Ratio (PDR), Packet Inter-Reception (PIR) time, and Received Signal Strength Indicator (RSSI). Field experiments are performed at the campus of the Federal University of Rio de Janeiro (UFRJ), Brazil. Results revealed that all the metrics evaluated in the simulated experiments are consistent with the results of the real experiments, however, we concluded that the model can be improved by looking for a stronger correlation with real experiments.

LoRa是一种低功耗广域网（LPWAN）技术，它要求减少网络基础结构以覆盖大面积且功耗低。在车辆通信的情况下，LoRa具有支持监视和协作导航应用程序的潜力，在这些应用程序中，少量数据可以通过网络异步传输。然而，文献缺乏在交通工具通信的背景下对LoRa的评估。因此，在本文中，我们使用安装在车辆上的LoRa终端设备和充当基础设施的LoRa接收器单元，分析了该技术在城市移动环境中运行的性能。此外，我们评估了实验结果与模拟结果之间的等效性，与通过NS-3仿真产生的结果相比，从车辆内的LoRa模块与LoRa接收器之间的通信链接获得的结果。评估了三个重要指标：数据包传输率（PDR），数据包间接收（PIR）时间和接收信号强度指示器（RSSI）。现场实验在巴西里约热内卢联邦大学（UFRJ）的校园内进行。结果表明，在模拟实验中评估的所有度量均与真实实验的结果一致，但是，我们得出结论，可以通过寻找与真实实验的更强相关性来改进模型。现场实验在巴西里约热内卢联邦大学（UFRJ）的校园内进行。结果表明，在模拟实验中评估的所有度量均与真实实验的结果一致，但是，我们得出结论，可以通过寻找与真实实验的更强相关性来改进模型。现场实验在巴西里约热内卢联邦大学（UFRJ）的校园内进行。结果表明，在模拟实验中评估的所有度量均与真实实验的结果一致，但是，我们得出结论，可以通过寻找与真实实验的更强相关性来改进模型。