文档版本 01 (2020 -09-08) i 文档版本 01 (2020 -09-08) i 目 录 1 5G前传进入 3.0时代 ................................ ................................ ................................ .................. 2 2 5G前传 3.0驱动力 ................................ ................................ ................................ ...................... 3 2.1 5G C-RAN架构变化与 5G品质业务发展矛盾驱动 ................................ ................................ ................................ 3 2.1.1 5G C-RAN架构变化故障点分析 ................................ ................................ ................................ ............................ 3 2.1.2 5G C-RAN现网故障点分析 ................................ ................................ ................................ ................................ .... 5 2.1.3 5G C-RAN现网可用度评估及提升手段分析 ................................ ................................ ................................ ........ 6 2.2 5G网络末梢海量模块和光缆主动运维驱动 ................................ ................................ ................................ ............ 6 2.3 5G综合业务 接入驱动 ................................ ................................ ................................ ................................ ................ 8 3 5G前传 3.0目标方案 ................................ ................................ ................................ ................ 10 3.1 半有源 5G前传方案架构 ................................ ................................ ................................ ................................ ........ 10 3.2 前传网络 99.99%业务可用度 ................................ ................................ ................................ ................................ . 11 3.3 前传网络可管可控 ................................ ................................ ................................ ................................ ................... 11 3.4 容量提升光纤更省 ................................ ................................ ................................ ................................ ................... 12 3.5 多业务承载能力 ................................ ................................ ................................ ................................ ....................... 13 4 5G前传 3.0关键技术 ................................ ................................ ................................ ................ 15 4.1 制冷型模块 ................................ ................................ ................................ ................................ ............................... 15 4.2 调顶检测技术 ................................ ................................ ................................ ................................ ........................... 16 4.2.1 多载波调幅 ................................ ................................ ................................ ................................ ............................ 17 4.2.2 单载波调幅 ................................ ................................ ................................ ................................ ............................ 18 4.3 光层倒换技术 ................................ ................................ ................................ ................................ ........................... 18 4.4 OTDR精准定位技术 ................................ ................................ ................................ ................................ ................ 19 5 5G前传 3.0产业支撑 ................................ ................................ ................................ ................ 21 6 总结与展望 ................................ ................................ ................................ ................................ ... 22 A缩略语 ................................ ................................ ................................ ................................ ........... 23 文档版本 01 (2020 -09-08) 2 1 5G前传进入 3.0时代 5G是国家新基建战略最热门的领域，中国基础网络先行建设的思路，在 5G中发挥的 淋漓尽致， “宁可路等车，不能让车等路 ”的比喻是非常形象的。