低轨卫星网络接入与传输技术  

Access and Transmission Technology for LEO Satellite Networks

作　　者：申佳伟 洪涛[1] 张更新 SHEN Jiawei;HONG Tao;ZHANG Gengxin(Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学,中国南京210003

出　　处：《中兴通讯技术》2024年第5期68-74,共7页ZTE Technology Journal

基　　金：国家自然科学基金项目(U21A20450、62171234、61971440);江苏省前沿引领技术基础研究专项(BK20192002);国家重点研发计划项目(2022YFB2902600)。

摘　　要：针对低轨卫星网络空口传输特征,在地面5G NR体制的基础上利用智能化网络与轻量化终端间的协同,实现用户的广域无感接入与适变传输。梳理了低轨卫星网络空口传输关键技术,认为需要采用内生智能的方法辅助空口设计,从空口赋能AI和AI辅助空口两个方面构建完整闭环的研究体系,最后展望了未来低轨卫星网络的研究趋势。Through an analysis of the air interface transmission characteristics of low earth orbit(LEO)satellite networks,a method is pro⁃posed for achieving wide-area seamless access and adaptive transmission through the synergy between intelligent networks and light⁃weight terminals,built upon the terrestrial 5G NR framework.The key technologies for air interface transmission in LEO satellite networks have been systematically reviewed.It is believed that an endogenous intelligence approach should be employed to assist air interface de⁃sign.The research framework is envisaged to be constructed as a complete closed loop,focusing on two main aspects:empowering AI through the air interface and utilizing AI to assist the air interface.Finally,future research trends in LEO satellite networks are anticipated.

关 键 词：低轨卫星网络 波形 多址 接入与传输 人工智能 

分 类 号：TN927.2[电子电信—通信与信息系统]