摘要
得益于卫星制造与火箭发射技术的进步,巨型低轨星座组网已成为未来卫星互联网的重要发展方向.与传统低轨星座相比,多轨道混合组网,不同高度卫星分层联合形成的多轨、异构混合巨型星座具有节点数量更多、拓扑动态性更强等新特征.面向此类特点,首先从星座设计、协议融合、拓扑表征、路由算法、网络仿真等5个方面总结巨型低轨星座组网面临的挑战,然后从网络架构、协议设计、网络编址、星间建链、故障恢复等方面介绍巨型星座组网关键技术,并对其发展方向进行展望,以期对我国卫星互联网建设提供参考.
Abstract
Owing to the advances in satellite manufacturing and rocket launch technology,the deployment of mega LEO constellations has become an important direction for the development of satellite Internet.Compared with traditional LEO constellations,new mega constellations,characterized by multi-orbit hybrid networking and stratified integration of satellites at different altitudes,exhibit new features such as a greater number of nodes and more dynamic topology.In light of these features,this paper first summarized the chal-lenges of mega LEO constellations networking from five aspects:constellation design,protocol integration,topology representation,routing algorithms,and network simulation.It then introduced the key technologies for mega constellation networking,included net-work architecture,protocol design,network addressing,inter-satellite link establishment,and fault recovery,and provided outlooks on their development directions,aimed to offer references for the construction of Chinese satellite Internet.
国家科技期刊平台
NSTL
万方数据