摘要:5g承载网作为基础网络,面临着大带宽、低延时、灵活连接、高精度时间同步和网络切片五大挑战。提出了面向5g承载的网络切片分层架构,并对涉及的软件定义网络(sdn)控制面切片、基于灵活以太网(flexe)的转发面硬切片、承载设备切片与虚拟化技术、5g业务的端到端切片编排等关键技术进行了研究。关键词:5g承载网;网络切片;硬切片;软切片;flexeabstract:as the basic network,5g transport network ** considered to face five major challenges,such as wide bandwidth,low delay,high-prec**ion synchronization,flexible connection,and network slicing. in th** **,a layer network slicing architecture for 5g transport network ** proposed,and some key technologies including soft-defined network(sdn)control plane slicing,flexible ethernet(flexe)-based data plane hard slicing,transport device slicing and virtualization,and e2e slicing orchestration for 5g services are studies.key words:5g transport network; network slicing; hard slicing; soft slicing; flexe1 5g承载网络切片需求5g业务呈现出多场景、 20210311