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为解决天地一体化网络统一管理困难、调度协同复杂等问题,文章结合卫星网络及地面无线网络融合发展的现状,利用软件定义网络(SDN),网络功能虚拟化(NFV)和移动边缘计算(MEC)等相关新技术,提出了基于SDN/NFV的天地一体化网络新架构。通过SDN实现对整个网络集中和动态的管理与控制,基于NFV构建融合统一的虚拟化平台,在其上部署MEC来提升网络的服务质量和用户的体验。文章对天地一体化网络下多虚拟运营者支持、提高应急覆盖能力等典型场景进行分析,分析文中架构在此类场景中应用的有效性,着重描述并分析了基于该架构下通过区分业务实现的链路和缓存优化,达到提高链路使用率,降低时延的目的。
In order to solve the problems of unified management and coordination of complex networks in the world, such as SDN, NFV, and MEC (Mobile Edge Computing) based on the current situation of satellite networks and terrestrial wireless networks, ) And other related new technologies, proposed a new architecture based on SDN / NFV network integration. Through SDN, centralized and dynamic management and control of the entire network are implemented. A unified virtualization platform is built based on the NFV, and an MEC is deployed on the network to improve network service quality and user experience. The article analyzes the typical scenarios such as the support of multiple virtual operators and the improvement of emergency coverage capability under the integrated network in the world, analyzes the effectiveness of the architecture in such scenarios, and focuses on the description and analysis of the scenarios based on the implementation of differentiated services Link and cache optimization, to achieve the purpose of improving link utilization, reduce latency.