电子学报 ›› 2021, Vol. 49 ›› Issue (4): 744-749.DOI: 10.12263/DZXB.20200242

• 学术论文 • 上一篇    下一篇

光路可靠性和频谱整合因子感知的虚拟光网络生存性映射

刘焕淋1, 胡会霞1, 马敬1, 陈勇2, 王展鹏1   

  1. 1. 重庆邮电大学通信与信息工程学院, 重庆 400065;
    2. 重庆邮电大学自动化学院, 重庆 400065
  • 收稿日期:2020-03-05 修回日期:2020-05-12 出版日期:2021-04-25 发布日期:2021-04-25
  • 作者简介:刘焕淋 女,1970年2月出生于重庆市.重庆邮电大学教授、博士和硕士生导师.主要研究方向为光通信技术和网络.E-mail:liuhl@cqupt.edu.cn;胡会霞 女,1997年5月出生于河南开封市.重庆邮电大学硕士研究生.主要研究方向为光通信网络和路由.E-mail:2270075845@qq.com
  • 基金资助:
    国家自然科学基金(No.NSFC51977021,No.61275077);重庆市自然科学基金面上项目(No.cstc2019jcyj-msxmX0613,No.2020jcyj-msxmX0682)

Survivable Embedding of Virtual Optical Network Based on Lightpath Reliability and Spectrum Integration Factor-Aware

LIU Huan-lin1, HU Hui-xia1, MA Jing1, CHEN Yong2, WANG Zhan-peng1   

  1. 1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    2. School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2020-03-05 Revised:2020-05-12 Online:2021-04-25 Published:2021-04-25

摘要: 针对多链路故障,本文提出一种基于光路可靠性和频谱整合因子感知的空分复用弹性光网络中虚拟光网络生存性映射算法.在虚拟节点映射时,综合考虑物理节点属性的权重评估准则.在虚拟链路映射时,本文设计联合考虑频谱资源和可靠性的工作光路选择策略和基于频谱整合因子感知的工作光路频谱分区分配方法,并设计提高保护带宽共享度的保护光路选择策略.仿真结果显示,本文算法提高了虚拟光网络请求接受率,降低了带宽阻塞率.

关键词: 弹性光网络, 虚拟光网络, 可靠性, 频谱整合因子, 带宽阻塞率

Abstract: Aiming at the multi-link failure scenario,a survivable embedding based on lightpath reliability and spectrum integration factor-aware (SE-LRSIF) algorithm is proposed for virtual optical networks in space-division multiplexing elastic optical networks.During virtual node embedding,a weight evaluation criterion is designed to comprehensively consider the attributes of physical nodes.During virtual link embedding,a working lightpath selection strategy that jointly considers spectrum resources and reliability is designed,and a working lightpath spectrum partition allocation method based on spectrum integration factor-aware is designed to make network spectrum resources more integrated.Moreover,a protection lightpath selection strategy is designed to increase the protection bandwidth sharing.The simulation results show that the proposed SE-LRSIF algorithm can significantly improve the acceptance ratio of virtual optical network requests and reduce the bandwidth blocking probability.

Key words: elastic optical network, virtual optical network, reliability, spectrum integration factor, bandwidth blocking probability

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