摘要
空间信息网络是星地融合网络中一个重要组成部分,其拓扑具有时变性和可预测性。采用一个合适的时变图模型来表征时变的空间信息网络,对于空间信息网络性能分析至关重要。首先阐述了空间信息网络的特性,然后介绍了多种空间信息网络时变图模型的建模方法,包括快照序列图、时间扩展图、存储时间聚合图和多功能时间扩展图,并且分析了它们的特征和优缺点,为6G星地融合网络的研究奠定基础,为网络性能分析提供了理论支撑。
As a critical component of satellite-terrestrial integrated networks,space information networks exhibit time-varying and predictable characteristics in their network topology.The selection of an appropriate time-varying graph model is crucial for accurately characterizing this variability and for the performance analysis of space information networks.This paper first comprehensively describes the fundamental properties of space information networks.It then delves into various modeling methods of time-varying graph models within these networks,including snapshot sequence graphs,time-expanded graphs,stored-time aggregated graphs,and multifunctional time-expanded graphs.By analyzing the characteristics,strengths,and weaknesses of these models,this study lays a solid theoretical foundation for the in-depth research of 6G satellite-terrestrial integrated networks and provides significant theoretical support for network performance analysis.
作者
杨惠婷
刘伟
YANG Huiting;LIU Wei(Xidian University,Xi'an 710000,China)
出处
《移动通信》
2024年第1期13-18,39,共7页
Mobile Communications
基金
国家重点研发计划项目“面向未来无线通信信息处理若干关键问题的数学理论和方法”(2021YFA1000500)。
关键词
星地融合网络
空间信息网络
时变图
satellite-terrestrial integrated network
space information network
time-varying graph
