摘要
空天地一体化通信网络是未来6G移动通信系统的重要发展趋势,能真正实现全球全域的“泛在连接”。考虑到空天地一体化网络的多层异构性,引入移动边缘计算(Mobile Edge Computing,MEC)技术可为用户提供各种数据业务计算服务的支持。首先,对空天地一体化网络中的天基网络、空基网络、地基网络以及MEC技术分别进行了概述,并讨论了引入MEC技术对空天地一体化网络带来的优势。其次,分别对低轨(Low Earth Orbit,LEO)卫星-MEC融合网络架构、高空平台(High Attitude Platforms,HAPs)-MEC融合网络架构、无人机(Unmanned Aerial Vehicle,UAV)-MEC融合网络架构以及空天地一体化网络(Space-Air-Ground Integrated Network,SAGIN)-MEC融合网络架构进行了介绍,并讨论了这4种架构的应用场景。最后,探讨了空天地一体化网络架构中安全性、移动性管理等关键性挑战问题。
The space-air-ground integrated network(SAGIN)is the future development trend of 6G mobile communication sys⁃tem,which can truly realize the“ubiquitous connection”of the whole world.Considering the multi-layer heterogeneity of the spaceair-ground integrated network,it is necessary to introduce mobile edge computing(MEC)technology to provide users with support for various data computing services.Firstly,we give an overview of the satellite network,air network,ground network and MEC technology in the space-air-ground integrated network.Moreover,the motivation of introducing MEC into space-air-ground integrated network is discussed.Then,the architectures of low earth orbit satellite(LEO)-MEC integrated network,high attitude platforms(HAPs)-MEC integrated network,unmanned aerial vehicle(UAV)-MEC integrated network and space-air-ground integrated network(SAGIN)-MEC integrated network are introduced.The application scenarios of these four network architectures are further specified.Finally,we discuss the key challenges such as security,mobile mobility and interference management in space-air-ground integrated networks.
作者
唐清清
李斌
TANG Qingqing;LI Bin(Beijing Institute of Technology,Beijing 100081,China;Nanjing University of Information Science&Technology,Nanjing 210044,China)
出处
《无线电通信技术》
2021年第1期27-35,共9页
Radio Communications Technology
基金
国家自然科学基金项目(61871032)
江苏省自然科学基金项目(BK20200822)。
关键词
空天地一体化网络
移动边缘计算
安全性
移动性管理
干扰管理
space-air-ground integrated network
mobile edge computing
security
mobile mobility
interference management
