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Differentiated quality-of-protection provisioning with probabilistic-shared risk link group in survivable flexi-grid optical networks

机译：可生存的柔性网格光网络中的概率共享风险链路组的差异化保护质量配置

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摘要

A multilink failures model, i.e., probabilistic-shared risk link group (PSRLG), is adopted to investigate the problem of differentiated quality-of-protection (QoP) provisioning for flexi-grid optical networks. As a metric, service failure probability (SFP) is introduced to exactly examine the feasibility of differentiated QoP schemes, which denotes the failure probability of a connection during transmission. According to different reliability requirements, connection requests are divided into three classes, i.e., class high, class middle, and class low. Then two differentiated QoP provisioning schemes are proposed based on the class division, i.e., intraclass-shared resource scheme (ICSR scheme) and cross-class-shared resource scheme (CCSR scheme). The former allows a connection to share backup resources only with those connections in the same class, whereas the latter enables the connections in different classes to share backup resources. Simulation results show that our proposed schemes could well provide differentiated reliability with PSRLG constraint and achieve a good balance between reliability and resource efficiency. Moreover, the CCSR scheme achieves lower blocking probability, lower resource redundancy, and higher spectrum utilization without sacrificing reliability compared to the ICSR scheme.
机译：采用多链路故障模型，即概率共享风险链路组（PSRLG），以研究针对柔性网格光网络的差异化保护质量（QoP）供应问题。作为度量标准，引入了服务故障概率（SFP）来精确检查差异化QoP方案的可行性，该方案表示传输期间连接的故障概率。根据不同的可靠性要求，将连接请求分为三类，即高等级，中等级和低等级。然后基于类划分提出了两种区分的QoP配置方案，即，类内共享资源方案（ICSR方案）和跨类共享资源方案（CCSR方案）。前者允许连接仅与相同类别的那些连接共享备份资源，而后者允许不同类别的连接共享备份资源。仿真结果表明，本文提出的方案可以很好地提供具有PSRLG约束的差分可靠性，并在可靠性和资源效率之间达到良好的平衡。而且，与ICSR方案相比，CCSR方案在不牺牲可靠性的情况下实现了更低的阻塞概率，更低的资源冗余以及更高的频谱利用率。

著录项

  • 来源
    《Optical engineering》 |2014年第6期|066111.1-066111.8|共8页
  • 作者

    Yongli Zhao; Jinyan Liu; Jie Zhang; Bowen Chen; Chen Ma; Yiming Yu; Xin Li;

  • 作者单位

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Xi Tu Cheng Road, No. 10, Haidian District, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Xi Tu Cheng Road, No. 10, Haidian District, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Xi Tu Cheng Road, No. 10, Haidian District, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Xi Tu Cheng Road, No. 10, Haidian District, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Xi Tu Cheng Road, No. 10, Haidian District, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Xi Tu Cheng Road, No. 10, Haidian District, Beijing 100876, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Xi Tu Cheng Road, No. 10, Haidian District, Beijing 100876, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    flexi-grid optical networks; reliability; quality-of-protection; probabilistic-shared risk link group; service failure probability;

    机译：柔性网格光网络;可靠性;保护质量;概率共享风险链接组;服务失败概率;

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