RWA algorithms for optical networks under constraints of ROADM intra-node blocking

Wang Xiaoling; Gao Li; Shen Gangxiang

doi:10.13756/j.gtxyj.2015.05.003

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RWA algorithms for optical networks under constraints of ROADM intra-node blocking

- RWA algorithms for optical networks under constraints of ROADM intra-node blocking
- Study on Optical communication Issue 5, Pages: 8-11(2015)
- 作者机构：
  
  苏州大学电子信息学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.05.003
  CLC： TN929.1
- Published：2015，
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[1]王晓玲,高丽,沈纲祥.ROADM节点内阻塞限制下的RWA算法研究[J].光通信研究,2015(05):8-11+70.

Wang Xiaoling, Gao Li, Shen Gangxiang. RWA algorithms for optical networks under constraints of ROADM intra-node blocking. [J]. (5):8-11(2015)
[1]王晓玲,高丽,沈纲祥.ROADM节点内阻塞限制下的RWA算法研究[J].光通信研究,2015(05):8-11+70. DOI： 10.13756/j.gtxyj.2015.05.003.

Wang Xiaoling, Gao Li, Shen Gangxiang. RWA algorithms for optical networks under constraints of ROADM intra-node blocking. [J]. (5):8-11(2015) DOI： 10.13756/j.gtxyj.2015.05.003.

摘要

ROADM（可重构的光分插复用器）是构建大型全光交换网络的核心设备。目前

大部分商用ROADM支持无色和无向性

但无阻塞性由于其高成本仍无法广泛应用

因此有效降低光通信业务的阻塞率是当前亟待解决的问题。文章基于具有多个上下路端口模块的有阻塞ROADM节点架构

提出了三种RWA（路由和波长分配）算法

以有效提高光通道业务的阻塞性能。仿真结果表明

结合上下路端口状态的波平面算法能有效地降低光通道业务的阻塞率。

Abstract

The Reconfigurable Optical Add/Drop Multiplexer（ROADM）is a core device for building a large-scale all-optical switching network.At present

most of the commercially available ROADMs support the colorless and directionless features;however

the unblocking feature still cannot be widely applied because of its high cost.Therefore

it is a problem at present demanding prompt solution to effectively reduce the blocking probability of the optical communication traffics.As the existing ROADM nodes have multiple add/drop port modules

this paper proposes three different Routing and Wavelength Assignment（RWA）algorithms.Simulation results show that the Plane-Wave Algorithm（PWA）with the awareness of add/drop port availability at the source and destination nodes can effectively reduce the blocking probability of the optical channel traffics as compared with those without such awareness.

关键词

可重构的光分插复用器阻塞因子路由和波长分配波平面算法

Keywords

ROADMblocking factorRWAPWA

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Xi’an Communications Institute

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

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江苏大学计算机科学与通信工程学院江苏镇江212013

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