面向5G承载的网络切片架构与关键技术

[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；FlexE

[Abstract] As the basic network, 5G transport network is considered to face five major challenges, such as wide bandwidth, low delay, high-precision synchronization, flexible connection, and network slicing. In this paper, a layer network slicing architecture for 5G transport network is 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.

[Keywords] 5G transport network; network slicing; hard slicing; soft slicing; FlexE