基于NS-3的海上移动场景LoRa网络性能研究

Performance Evaluation of LoRa Network Based on NS-3 in Maritime Mobile Scenarios

近几年来,低功耗广域网(Low Power Wide Area Network (LPWAN))技术以功耗低、距离远、网络部署规模大的优势在物联网应用中兴起。LoRa作为LPWAN技术的热门技术之一也成为了研究和应用的重点。目前,对LoRa技术的研究大多数是在陆地场景,海上场景研究较少。而在物联网中,海上移动场景也是重要的应用场景,因此研究LoRa技术在海上移动通信的性能有其重要的意义。使用NS-3仿真平台,通过仿真平台中的LoRaWAN模块,建立海上通信信道模型和节点移动模型,研究LoRa技术在海上环境移动场景下的数据包投递率、网络规模等性能,为今后实际应用提供理论基础。

In recent years, the low power wide area network(LPWAN) technology is gaining momentum as enabling technologies for the Internet of Things with advantages of low power consumption, long distance, and large-scale network deployment. LoRa, as one of the most prominent LPWAN technologies, has become the focus of research and application. At present, most researches on LoRa are on land scenes, and there are few studies on maritime scene, which is an important scenario in the Internet of Things. Therefore, it is of great significance to study the performance of LoRa technology in maritime mobile communications. In this paper, we use the NS-3 simulation platform to evaluate the performance of LoRaWAN in maritime mobile scenario. A maritime communication channel model and a node mobility model have been established, and then combined with LoRaWAN module in NS-3 to study the LoRa network performance. The simulation results are focus on packet delivery rate and network capacity, which can provide for theoretical basis for future practical applications.