A novel dynamic shared path protection algorithm in WDM optical networks

Hu Gangyi; Mao Qijian; Wang Ruyan; Yan Hong

doi:10.13756/j.gtxyj.2009.04.015

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A novel dynamic shared path protection algorithm in WDM optical networks

- A novel dynamic shared path protection algorithm in WDM optical networks
- Study on Optical communication Issue 4, Pages: 1-3(2009)
- 作者机构：
  
  重庆邮电大学光纤通信技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2009.04.015
  CLC： TN929.1
- Published：2009，
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[1]胡刚毅,毛期俭,王汝言,颜红.WDM光网络中一种新型的动态共享保护算法[J].光通信研究,2009(04):1-3.

Hu Gangyi, Mao Qijian, Wang Ruyan, et al. A novel dynamic shared path protection algorithm in WDM optical networks. [J]. (4):1-3(2009)
[1]胡刚毅,毛期俭,王汝言,颜红.WDM光网络中一种新型的动态共享保护算法[J].光通信研究,2009(04):1-3. DOI： 10.13756/j.gtxyj.2009.04.015.

Hu Gangyi, Mao Qijian, Wang Ruyan, et al. A novel dynamic shared path protection algorithm in WDM optical networks. [J]. (4):1-3(2009) DOI： 10.13756/j.gtxyj.2009.04.015.

摘要

波分复用（WDM）光网络中引入了共享风险链路组（SRLG）的概念

要求工作通路与保护通路不能处于同一个SRLG之中。文章提出了一种基于SRLG限制的动态共享通道保护算法

即满足K对业务的动态链路权重配置（K-Dynamic LinkWeight Configuration

K-DLWC）算法

该算法的关键在于使用了备选路由集合的概念。在计算工作通路和保护通路时

它能综合解决SRLG限制、局部最优等关键问题。

Abstract

The concept of Shared Risk Link Group（SRLG） is introduced into WDM optical networks

requiring that the work path and the protection path should not exist in one and same SRLG.This article proposes an SRLG constraint-based dynamic shared path protection algorithm that satisfies the Dynamic Link Weight Configuration（DLWC） of K pairs services

called.K-DLWC algorithm.The key to this algorithm lies in the use of the concept of routing options

which can be used to synthetically cope with such key issues as SRLG constraints and local optimization in calculating the work path and the protection path.

关键词

共享风险链路组共享通路保护K对业务的动态链路权重配置局部最优化

Keywords

SRLGshared path protectionK-DLWClocal optimization

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College of Information Science and Technology,Dalian Maritime University

College of Communication and Information Engineering,Nanjing University of Posts & Telecommunications

Key Laboratory of Optical Communication and Lightwave Technologies,Ministry of Education,Beijing University of Posts and Telecommunications

北京邮电大学光通信与光波技术教育部重点实验室北京100876

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