Energy-Efficient and Survivable Optical Access Network Based on Multilayer-Ring Structure
Energy-Efficient and Survivable Optical Access Network Based on Multilayer-Ring Structure
复制标题
基于多层环结构的节能、高生存性光接入网
DOI：
10.1109/jphot.2017.2726681
复制
发表时间：
2017
影响因子：
2.4
通讯作者：
Qiu Kun
中科院分区：
文献类型：
--
作者：
Lv Yunxin;Jiang Ning;Xue Chenpeng;Qiu Kun
提出并研究了一种节能、抗毁的光接入网结构。基于多层环结构模型，将接入网分为四层，同一层上的模块互连成环。因此，光网络单元可以通过多条路径访问光线路终端，这不仅方便了业务聚合，而且保证了网络的生存性。通过这种结构，减少了备用模块的数量，从而降低了资本成本和电力成本。通过流量聚合关闭空闲模块也可以节省大部分电量。此外，通过控制部署在远程节点中的光开关，由于在传输链路上放大是可选的，因此也实现了弹性到达接入。理论和数值分析表明，该方案在节能、网络生存性和系统灵活性方面具有很大优势，结合节能资源调度方案可以进一步提高其能效性能。它为下一代光接入网提供了一种潜在的结构。
An energy-efficient and survivable optical access network structure is proposed and investigated. Based on a structure model of multilayer-ring, the access network is divided into four layers and modules on a same layer are interconnected as a ring. Therefore, multiple paths are available for optical network units to access an optical line terminal, which not only provides convenience in traffic aggregation, but also guarantees the survivability of network. With this structure, quantities of standby modules are reduced to decrease both capital cost and power cost. Large part of power can also be saved by turning off idle modules through traffic aggregation. Moreover, by controlling the optical switches deployed in remote node, elastic reach access is realized as well since amplification is optional on transmission links. Theoretical and numerical analyses indicate that the scheme shows great advantages on power saving, network survivability, as well as the system flexibility, and its energy efficiency performance can be further improved by operating in conjunction with energy-efficient resource scheduling scheme. It provides a potential structure for next generation optical access network.