摘要
得益于丰富的轨道资源以及更低的制造和发射成本,低轨卫星互联网进入蓬勃发展期.首先,从接入网、承载网和核心网维度出发,提出了星地融合网络架构;然后,对星地融合通信的典型应用—手机直连卫星通信的方案进行了分析,并提出了面向第6 代移动通信的手机直连卫星通信关键技术;最后,系统阐述了低轨卫星通信导航遥感一体化的网络架构、关键技术和应用场景.
Abstract
Leveraging vast orbital resources and reducedsatellite manufacturing and launch costs,the low-orbit satellite Internet has entered a stage of vibrant development,In this paper,centered on the two important trends of satellite-terrestrial convergence and the integration of communication,navigation and remote sensing,we propose a satellite-terrestrial converged network architecture from the perspectives of access,transport,and core networks.Subsequently,we carefully analyze solutions of direct-to-handset satellite communication or typical applications of space-ground convergence,and put forth the pivotal technologiesfor direct-to-handset satellite communicationstowards the 6th generation of mobile communication network.Finally,a comprehensive discussion on the network architecture,key technologies,and potential application scenarios regarding with the integration of low-orbit satellite communication,navigation,and remote sensing is presented.
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