链路可靠性感知的差异保护虚拟光网络映射

doi:10.3969/j.issn.0372-2112.2020.05.015

电子学报 ›› 2020, Vol. 48 ›› Issue (5): 946-952.DOI: 10.3969/j.issn.0372-2112.2020.05.015

链路可靠性感知的差异保护虚拟光网络映射

刘焕淋¹, 蒲欣¹, 陈勇², 王展鹏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:2019-08-05 修回日期:2019-09-12 出版日期:2020-05-25 发布日期:2020-05-25
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;蒲欣女,1995年9月出生于宁夏固原市.重庆邮电大学硕士研究生.主要研究方向为光通信.E-mail:px727206138@163.com
基金资助:
国家自然科学基金（No.NSFC51977021）；重庆市自然科学基金面上项目（No.cstc2019jcyj-msxmX0613）

Link Reliability-Aware Protection-Differentiated Virtual Optical Network Embedding

LIU Huan-lin¹, PU Xin¹, CHEN Yong², WANG Zhan-peng¹

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:2019-08-05 Revised:2019-09-12 Online:2020-05-25 Published:2020-05-25

摘要/Abstract

摘要： 针对弹性光网络的多链路故障影响虚拟光网络映射性能问题，提出一种链路可靠性感知的差异保护虚拟光网络映射（RA-DPVONE）方法.根据光节点的资源特性与相邻链路故障概率，该方法设计了光节点重要性评估准则和优先映射方法.根据候选光路上的可用频谱资源和链路故障概率，设计虚拟链路映射的工作光路和保护光路的链路代价更新公式，仅为不满足可靠性需求的虚拟链路映射资源共享保护光路.仿真结果表明，所提方法能降低网络的带宽阻塞率，提高虚拟网络请求接受率和弹性光网络的频谱资源利用率.

关键词: 弹性光网络, 虚拟网络映射, 可靠性感知, 差异保护, 多链路故障, 带宽阻塞率

Abstract: Aiming at the problem that multi-link faults in elastic optical networks affect the performance of virtual optical network mapping,a method of link Reliability-Aware Protection-differentiated Virtual Optical Network Embedding (RA-PVONE) is proposed in the paper.In the RA-PVONE,an importance evaluation criteria and priority mapping method of optical nodes are designed.According to the available spectrum resources and link failure probability of candidate optical paths,the link cost updating formulas for working and protecting optical paths are designed to map the virtual link.Protection optical paths sharing spectrum resource is only configured for working optical path that do not meet the virtual link's reliability requirements.The simulation results show that the proposed method can reduce the network bandwidth blocking probability,improve virtual network acceptance ratio and the spectrum resource utilization.

Key words: elastic optical networks, virtual network mapping, reliability-aware, protection-differentiated, multiple link faults, bandwidth blocking probability

中图分类号:

TN929.11

刘焕淋, 蒲欣, 陈勇, 王展鹏. 链路可靠性感知的差异保护虚拟光网络映射[J]. 电子学报, 2020, 48(5): 946-952.

LIU Huan-lin, PU Xin, CHEN Yong, WANG Zhan-peng. Link Reliability-Aware Protection-Differentiated Virtual Optical Network Embedding[J]. Acta Electronica Sinica, 2020, 48(5): 946-952.

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链路可靠性感知的差异保护虚拟光网络映射

Link Reliability-Aware Protection-Differentiated Virtual Optical Network Embedding

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