低轨卫星物联网体系架构分析

摘要

物联网的出现深刻影响人们的生活和工作方式,然而地面物联网无法实现全球覆盖,低轨卫星凭借广覆盖的优势可以实现全球的无缝覆盖,从而大大拓展物联网的覆盖范围.分析卫星移动通信网和地面物联网的体系架构,在借鉴它们的基础上对其不适应性进行改造,提出一种低轨卫星物联网的体系架构,分析它的星座设计、系统组成、网络架构以及传输体制.%The emergence of the Internet of Things(IoT)has a profound impact on people’s lives and working methods. However, it cannot achieve global coverage, LEO satellites can make up for its disadvantages properly and expand the coverage of the IoT greatly. The paper analyses the architecture of the satellite mobile communications network and the ground IoT. Then, it provides an overview of the architecture of the LEO satellite constellation-based IoT including the following topics:LEO satellite constellation structure, system components, transmission system and network architecture.