一种适合承载IPTV多播业务的新型EPON扩展网络架构  

New-style EPON Network Extended Architecture Fitting for Carrying IPTV Multicast Service

作　　者：李进 高义河 

机构地区：[1]上海未来宽带技术及应用工程研究中心有限公司,上海200336

出　　处：《中国新通信》2009年第13期52-55,共4页China New Telecommunications

摘　　要：本文提出一种新型的EPON扩展网络架构,通过在原有OLT和ONU设备之间新增加一条无源光网络PON通道,该PON通道用于单独承载IP多播数据流,原PON通道仍可正常承载其他IP数据流。使得EPON网络在承载IPTV业务时,既能够保证实时多播业务质量要求又能够保证单播业务的带宽要求。本文同时描述了这种双PON通道的EPON扩展网络架构实现方法以及对支持双PON接口ONU的管理方式。A new EPON network extended architecture is proposed in the thesis. Another new PON fiber path is added between OLT and ONU equipment, the new PON path can carry IP muhicast service wholly, and the original PON path can carry other IP service as normal EPON network. This new architecture make it possible that the real-time muhicast service QoS is ensured and the unicast service bandwidth is meet at the same time. The realization of new double PON path architecture of EPON and the management for double PON ONU is described in this thesis.

关 键 词：EPON 双PON口 OLT ONU IPTV多播 单播业务 

分 类 号：TN949.2[电子电信—信号与信息处理]