Flexible ring-tree TWDM network architecture for next generation optical access network
Flexible ring-tree TWDM network architecture for next generation optical access network
复制标题
DOI：
10.1109/wocc.2014.6839932
复制
发表时间：
2014-05
期刊：
影响因子：
--
通讯作者：
Xintian Hu;Xue Chen;Zhiguo Zhang;Liqian Wang;Jinsong Bei
中科院分区：
文献类型：
--
作者：
Xintian Hu;Xue Chen;Zhiguo Zhang;Liqian Wang;Jinsong Bei
为了实现更高的容量、更长的覆盖范围和灵活的按需提供波长和时隙，本文提出了一种环树时波分复用（TWDM）光接入网架构。利用沿光纤环的主动远程节点（RNs），可以减轻大劈裂和高光纤损耗带来的压力，并可以动态分配不同RNs上的加/减波长。仿真结果表明，该架构能够以10Gbps的速率为8192个70km的光网络单元（onu）提供接入服务，并且采用动态波长和带宽分配（DWBA）可以减少排队延迟和丢包。
To achieve higher capacity, longer reach and flexible on-demand wavelength and timeslot provision a ring-tree time and wavelength division multiplexing (TWDM) optical access network architecture is proposed in this paper. Using active remote nodes (RNs) along fiber ring, the pressures from large split and high fiber loss are relieved and add/drop wavelengths at different RNs can be dynamically assigned. By simulations, it is verified that the architecture can provide access services to 8192 optical network units (ONUs) of 70km reach at 10Gbps, and dynamic wavelength and bandwidth allocation (DWBA) can reduce queuing delay and packet loss.