Reliable wave division multiplexing/time division multiplexing passive optical network with cost efficient hybrid protection

doi:10.11772/j.issn.1001-9081.2015.03.601

Journal of Computer Applications ›› 2015, Vol. 35 ›› Issue (3): 601-605.DOI: 10.11772/j.issn.1001-9081.2015.03.601

Reliable wave division multiplexing/time division multiplexing passive optical network with cost efficient hybrid protection

XIONG Yu, TANG Xiaofei, JIANG Jing

Chongqing University of Posts and Telecommunications, Key Laboratory of Optical Fiber Communication, Chongqing 400065, China

Received:2014-10-20 Revised:2014-11-17 Online:2015-03-10 Published:2015-03-13

低开销混合式保护的高可靠的波分/时分混合无源光网络

熊余, 汤小飞, 蒋婧

重庆邮电大学光纤通信技术重点实验室, 重庆 400065

通讯作者: 熊余
作者简介:熊余(1982-),男,四川内江人,副研究员,博士研究生,CCF会员,主要研究方向:宽带网络可靠性理论、抗毁技术及下一代无源光网络,E-mail:xiongyu@cqupt.edu.cn; 汤小飞(1989-),男,江苏南通人,硕士研究生,主要研究方向:下一代无源光网络的生存性;蒋婧(1988-),女,四川邻水人,硕士研究生,主要研究方向:TWDM-PON的带宽分配
基金资助:
国家自然科学基金资助项目(60972069,61401052);重庆市自然科学基金重点项目(2011BA2041);重庆市教委科学技术研究项目(KJ110531,KJ1400418);重庆市高校优秀人才支持计划项目(2011-29)

Abstract

Abstract:

To limit the number of components in the protection switching process and to accordingly reduce the protection cost, a new reliable Wave Division Multiplexing/Time Division Multiplexing Passive Optical Network (WDM/TDM-PON) architecture with cost-efficient hybrid protection was proposed. Firstly, the logic decision unit, protection path control unit and backup transceiver unit were designed in Optical Line Terminal (OLT) to only switch failure components to their backups in Wave Division Multiplexing (WDM) segment. Secondly, by employing the cross bus structure in Time Division Multiplexing (TDM) segment, fast protection switching was achieved in a distributed manner. According to the analytic results of the hybrid protection, the proposed architecture can provide fast and full protection in recovery time of 1.5 to 2.4 ms against Feed Fiber (FF), Distribution Fiber (DF) and Last Mile Fiber (LMF) failures. Certainly, the proposed architecture can also significantly reduce the protection overhead, and achieve great scalability.

Key words: Wave Division Multiplexing/Time Division Multiplexing Passive Optical Network (WDM/TDM-PON), fiber fault, cost-efficient, hybrid, full protection

摘要：

针对光纤故障参与保护倒换元器件多、保护资源开销大的问题,提出一种低开销混合式保护的高可靠波分/时分混合无源光网络(WDM/TDM-PON)结构。所提结构在光线路终端(OLT)中新设计了逻辑判定、备份收发以及保护路控制单元,使波分复用(WDM)部分只对故障部分器件执行倒换操作,实现了低开销的集中式保护;在时分复用(TDM)部分采用交叉总线形结构,实现了快速的分布式保护倒换。经分析证明,所提混合式保护结构有效地减少了保护资源开销,对馈入光纤(FF)、配线光纤(DF)和最后一个公里光纤(LMF)故障提供了1.5~2.4 ms恢复时间的快速全保护,且具有良好的扩展性。

关键词: 波分/时分混合无源光网络, 光纤故障, 低开销, 混合式, 全保护

CLC Number:

TN913.7

XIONG Yu, TANG Xiaofei, JIANG Jing. Reliable wave division multiplexing/time division multiplexing passive optical network with cost efficient hybrid protection[J]. Journal of Computer Applications, 2015, 35(3): 601-605.

熊余, 汤小飞, 蒋婧. 低开销混合式保护的高可靠的波分/时分混合无源光网络[J]. 计算机应用, 2015, 35(3): 601-605.

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Reliable wave division multiplexing/time division multiplexing passive optical network with cost efficient hybrid protection

低开销混合式保护的高可靠的波分/时分混合无源光网络

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