Domga Komguem Rodrigue, Stanica Razvan, Tchuente Maurice, Valois Fabrice
INSA Lyon, Université de Lyon, Inria, CITI, F-69621 Villeurbanne, France.
Faculté des Sciences, Université de Yaoundé I, CETIC, LIRIMA, Yaoundé BP 812, Cameroun.
Sensors (Basel). 2019 Jul 31;19(15):3358. doi: 10.3390/s19153358.
In this paper, we are interested in characterizing the link properties of a wireless sensor network with nodes deployed at ground level. Such a deployment is fairly common in practice, e.g., when monitoring the vehicular traffic on a road segment or the status of infrastructures such as bridges, tunnels or dams. However, the behavior of off-the-shelf wireless sensor nodes in these settings is not yet completely understood. Through a thorough experimentation campaign, we evaluated not only the impact of the ground proximity on the wireless links, but also the impact of some parameters such as the packet payload, the communication channel frequency and the topography of the deployment area. Our results show that a ground-level deployment has a significant negative impact on the link quality, while parameters such as the packet size produce unexpected consequences. This allows us to parameter classical theoretical models in order to fit a ground-level deployment scenario. Finally, based on the lessons learned in our field tests, we discuss some considerations that must be taken into account during the design of communication protocols and before the sensor deployment in order to improve network performance.
在本文中，我们感兴趣的是刻画节点部署在地面高度的无线传感器网络的链路特性。这种部署在实际中相当常见，例如，在监测路段的车辆交通或桥梁、隧道或水坝等基础设施的状态时。然而，现成的无线传感器节点在这些环境中的行为尚未被完全理解。通过全面的实验活动，我们不仅评估了靠近地面对无线链路的影响，还评估了一些参数的影响，如数据包有效载荷、通信信道频率和部署区域的地形。我们的结果表明，地面部署对链路质量有显著的负面影响，而数据包大小等参数会产生意想不到的后果。这使我们能够对经典理论模型进行参数化，以适应地面部署场景。最后，基于我们在现场测试中吸取的经验教训，我们讨论了在通信协议设计期间以及传感器部署之前必须考虑的一些因素，以提高网络性能。
