5G承载网方案探讨

Discussion on Scheme of 5G Bearer Network

5G带来了超高带宽、超大连接、超低时延、灵活切片等特性的同时,对承载网也提出了更高的要求。研究了5G核心网、无线接入网的架构,并基于5G典型应用场景的特点,梳理了对承载网的组网、带宽、时延、路由等各方面的需求。根据上述需求提出了5G承载网组网架构,并针对CU、DU分离后的前传网络进行了多方案比较。引入了Flex E、SDN等新技术,实现承载网的灵活隔离及智能调整,以满足5G网络切片的需求。

5G brings us ultra-high bandwidth,large connections,ultra-low latency,flexible slicing and so on. At the same time,it also puts forward higher requirements for the bearer network.It studies the 5G core network and wireless access network architecture. Based on the service features of the typical 5G application scenario,it summarizes the bearer network requirements such as bandwidth,delay,routing and so on. According to the above requirements,5G bearer network architecture is proposed and a multi scheme comparison is made for the fronthaul network after the separation of CU and DU. New technologies such as Flex E and SDN are used to implement flexible isolation and intelligent adjustment of the bearer network to meet the requirements of 5G network slicing.