面向5G发展的城域传输PTN网络演进探讨  

Discussion on the Evolution of PTN Metropolitan Area Transport Network Oriented to 5G

作　　者：汤进凯 徐昕 

机构地区：[1]中国移动通信集团设计院有限公司上海分公司,上海200060

出　　处：《移动通信》2016年第23期70-74,共5页Mobile Communications

摘　　要：为了分析移动通信在未来几年向5G演进过程对传输尤其是PTN网络的影响,基于无线网向5G发展将产生三种典型应用以及技术发展的特征,探讨了5G发展对传输网络的关键需求:超高带宽需求、低时延需求、网络切片需求和东西向流量需求。基于以上需求,考虑未来面向5G的城域传输PTN网络会逐步向三层下移,架构向大容量、扁平化和灵活组网的方向发展,并且在实验室测试5G吞吐量的基础上,通过建立模型对城域传输网内带宽进行了测算,提出了城域传输网核心层、汇聚层、接入层的演进方向和技术特征。In order to analyze impacts of the evolution process of mobile communications to 5G on the transport, especially PTN in the next few years, key requirements of 5G development for transport network were analyzed, including ultra-high bandwidth, low delay, network slice and east-west direction traffi c demands. In view of trends above, it was discussed that the metropolitan area transport PTN oriented to 5G will gradually move down to three-layer network, its architecture will be high-capacity, fl atting and fl exible-networking. In addition, based on tests of 5G throughputs in the laboratory, the bandwidth in metropolitan area transport network was calculated by building models to present the evolution direction and the technical feature of core layer, convergence layer and access layer for metropolitan area transport network.

关 键 词：分组传送网 软件定义网络 三层网络 超高带宽需求 低时延需求 网络切片需求 东西向流量需求 

分 类 号：TN913.2[电子电信—通信与信息系统]