GPON 和 XG(S)-PON 技术白皮书

目录 1概述·······························································································································11.1 GPON和XG(S)-PON简介······························································································11.2 GPON和XG(S)-PON网络架构························································································11.3 GPON和XG(S)-PON的发展历程·····················································································21.3.1 PON网络的起源···································································································21.3.2 GPON技术标准简介·····························································································51.3.3 GPON技术标准的演进··························································································62 GPON的技术原理············································································································72.1 GPON的基本概念·········································································································72.1.1 GEM帧··············································································································72.1.2 GEM Port············································································································82.1.3 T-CONT ·············································································································92.2 GPON下行业务处理流程······························································································112.2.1下行数据流广播流程····························································································112.2.2 Downstream GTC帧介绍·····················································································122.3 GPON上行业务处理流程······························································································142.3.1上行数据流的处理流程·························································································142.3.2 Upstream GTC帧介绍·························································································152.4 GPON ONU的激活和认证流程·······················································································163 XG(S)-PON的技术原理···································································································203.1 XG(S)-PON概述·········································································································203.2 XGEM帧结构简介·······································································································213.3 XG(S)-PON的帧简介···································································································223.3.1 Downstream PHY帧结构·····················································································243.3.2 Upstream PHY帧结构·························································································253.4 XG(S)-PON ONU激活和认证流程···················································································263.5从GPON向XG(S)-PON的平滑演进···············································································304 PON网络中的ONU管理·································································································30 4.1 OMCC通道建立过程····································································································314.1.1 GPON建立OMCC的过程····················································································314.1.2 XG(S)-PON建立OMCC的过程·············································································324.2 OMCI协议消息简介·····································································································32 5.1 DBA ·························································································································365.2测距·························································································································375.3加密·························································································································375.4 FEC ·························································································································395.5 GPON和XG(S)-PON的保护技术···················································································40 6.1 ODN网络中的光功率损耗·····························································································436.2光模块的光功率预算·····································································································44 7.1家庭用户和企业专线的宽带接入······················································································447.2数字园区无源网络覆盖··································································································457.3固定网络和移动网络的融合····························································································46 8参考文献·······················································································································47 1概述 1.1 GPON和XG(S)-PON简介 GPON（Gigabit Pa