STN网络建设策略分析及探讨

Analysis and Discussion of STN Network Construction Strategy

结合5G大带宽、低时延、多连接的特点以及运营商共建共享政策,阐述了5G建网不同阶段骨干层、汇聚层及接入层的STN回传网络架构演进策略,阐述了5G基站流量的测算模型,分析了NSA阶段和SA阶段的共建共享组网模型及低时延解决方案,最后通过对光纤直连方案和无源WDM方案在占用纤芯、维护便利性、产业成熟度等方面的比较,总结5G前传方案的应用场景,对4类不同前传引入段光缆的场景进行了综合造价分析。

Combining the characteristics of 5G’s large bandwidth,low latency,multiple connections,and the co-construction and sharing policy of operators,the STN backhaul network architecture evolution strategy of the backbone layer,convergence layer and access layer in different stages of 5G network construction is explained,the calculation model of 5G base station traffic expounded,and the co-construction and sharing networking model and low-latency solutions in the NSA and SA phases analyzed.Finally,by comparing the optical fiber direct connection solution and the passive WDM solution in terms of core occupation,maintenance convenience,industry maturity,etc.,the application scenarios of the 5G fronthaul solution are summarized,and a comprehensive cost analysis is done on the scenarios of 4 types of different fronthaul lead-in optical cable.