LoRa覆盖性能评估及定位技术研究

LoRa Coverage Performance Evaluation and Positioning Technology

低功耗广域物联网络(LPWAN)是新型的无线通信技术,主要包括工作在授权频段的NB-IOT技术和非授权频段的Lo Ra技术。评估Lo Ra技术的网络覆盖性能,对网络中的终端节点开展定位研究。通过数据碰撞、网络可扩展性、路径损耗模型,基于离散事件方法模拟单个基站覆盖,得出对应参数配置下的网络数据包获取率、数据包碰撞率及网络能量消耗情况。同时,使用TDOA算法对LPWAN中的终端节点定位分析,提高路由效率,确定网络覆盖质量,并实现负载均衡。

LPWAN(Low Power Wide Area Network)is a new kind of wireless communication technology,mainly involving NB-IOT technology that works in licensed bands and LoRa technology in unlicensed bands.The network coverage performance of LoRa technology is evaluated,and the positioning research of the terminal nodes in the network also done.Through data collision,scalability of network and path-loss model,and based on the discrete event method,the single basestation coverage is simulated,and then the data extraction rate,data collision rate,and network energy consumption under a certain parameter configuration are acquired.Meanwhile,TDOA algorithm is used to position terminal nodes in LPWAN,improve the routing efficiency,determine the network coverage quality and achieve the load balance.