摘要
空天地一体化网络作为6G技术的关键组成,在整合天基、空基和地基网络时,面临节点异构性、业务多样性等挑战,进而引发资源分配、竞争及故障风险等问题。基于此,聚焦基于软件定义网络(software defined network,SDN)与网络功能虚拟化(network functions virtualization,NFV)的空天地一体化网络任务部署与恢复,首先阐述了空天地一体化网络系统架构,介绍了各层网络构成、SDN和NFV原理及其相关应用,然后,针对上述挑战,以服务功能链技术为抓手,提出了面向任务的服务功能链优化部署、利用智能算法实现动态调度、通过匹配博弈算法完成失效恢复等策略,最后,构建了一个用例,设定节点部署、服务功能链建模等,验证了所提策略在提升服务功能链完成效率以及应对资源故障方面的有效性,旨在为空天地一体化网络资源管理提供理论基础。
The space-air-ground integrated network,as a key technology in 6G,faces challenges such as node heterogeneity and service diversity when integrating the space-based,air-based,and ground-based networks.These challenges subsequently lead to issues such as the resource allocation,competition,and failure risks.Based on this,the task deployment and recovery of the space-air-ground integrated network focusing on software defined network(SDN)and network functions virtualization(NFV)were addressed.Firstly,the space-air-ground integrated network system architecture was elaborated,introducing the composition of each layer of the network,the principles of SDN and NFV,as well as their related applications.Subsequently,in response to the above-mentioned challenges,based on the service function chain technology,corresponding strategies including the task-oriented service function chain optimized deployment,dynamic scheduling achieved through intelligent algorithms,and failure recovery accomplished via a matching game algorithm were proposed.Finally,a use case was constructed,setting node deployment and service function chain modeling.The effectiveness of the proposed strategies in improving the completion efficiency of service function chains and dealing with resource failures was verified,providing a theoretical basis for the resource allocation for the space-air-ground integrated network.
作者
曹怡璐
贾子晔
尤嘉豪
张磊
吴启晖
CAO Yilu;JIA Ziye;YOU Jiahao;ZHANG Lei;WU Qihui(Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)
出处
《电信科学》
北大核心
2025年第5期1-16,共16页
Telecommunications Science
基金
国家自然科学基金资助项目(No.62301251)
江苏省自然科学基金资助项目(No.BK20220883)
航空科学基金资助项目(No.2023Z071052007)。
关键词
空天地一体化网络
SDN
NFV
服务功能链
资源分配
space-air-ground integrated network
SDN
NFV
service function chain
resource allocation
