星载6G核心网架构与网元功能设计及验证  

Design and verification of the onboard 6G core network architecture and network functions

作　　者：王尚广[1,2] 王超[1,2] 马骁 邢若粼 周傲[2] WANG Shangguang;WANG Chao;MA Xiao;XING Ruolin;ZHOU Ao(Shenzhen Research Institute,Beijing University of Posts and Telecommunications,Shenzhen 518063,China;State Key Laboratory of Network and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学深圳研究院,广东深圳518063 [2]北京邮电大学网络与交换技术全国重点实验室,北京100876

出　　处：《电信科学》2024年第9期28-43,共16页Telecommunications Science

基　　金：国家自然科学基金资助项目(No.62032003,No.62372061,No.U21B2016);深圳市科技计划资助项目(No.KJZD20230928112759002);北京邮电大学优秀博士生创新基金资助项目(No.CX20242013)。

摘　　要：为全面提升卫星的在轨服务能力,将6G核心网与卫星融合。针对6G核心网在低轨卫星部署的迫切需求,设计星载6G核心网体系架构,包括分布式架构、离线自治、网元智能化等功能。对星载6G核心网主要网元进行了优化设计,包括接入与移动性管理、会话管理、分布式服务注册与发现等。通过在轨部署和仿真试验,验证了所提星载6G核心网体系架构的有效性。仿真结果表明,集中式星载5G核心网网元之间的平均通信时延为109.3 ms,而分布式星载6G核心网的平均通信时延为60.3 ms,相较而言降低了44.8%;此外,5G集中式服务注册和服务发现的平均时延分别为40.53 ms和40.04 ms,而6G分布式服务注册和服务发现的平均时延分别为35.18 ms和34.91 ms,分别降低13.2%和12.8%。In order to comprehensively improve the in-orbit service capability of satellite networks,it is necessary to integrate 6G core networks and satellite networks.In view of the urgent need of 6G core networks deployment,the system architecture of the onboard 6G core network was designed,including distributed architecture,offline autonomy,intelligent network elements and so on.The network elements of the onboard 6G core network were optimized,including access and mobility management,session management,distributed service registration and discovery,etc.The effectiveness of the proposed 6G core network architecture was verified by the on-orbit deployment and simulation tests.The simulation results show that the average communication delay between network functions of the centralized onboard 5G core network is 109.3 ms,while the value of the distributed onboard 6G core network is 60.3 ms,which is a 44.8%reduction in comparison.In addition,the average delays of 5G centralized service registration and service discovery are 40.53 ms and 40.04 ms respectively,while the average delays of 6G distributed service registration and service discovery are 35.18 ms and 34.91 ms respectively,with average reductions of 13.2%and 12.8%respectively.

关 键 词：低轨卫星 星载6G核心网 分布式架构 离线自治 

分 类 号：TN92[电子电信—通信与信息系统]