Research of novel complex optical network routing architecture  

作　　者：HAN Da-hai ZHANG Jie ZHAO Yong-li ZHAO Shi-yu 

机构地区：[1]Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts & Telecommtmications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第5期93-99,共7页中国邮电高校学报（英文版）

基　　金：supported by the National Basic Research Program of China (2010CB328204);the Hi-Tech Research and Development Program of China (2009AA01Z255);the National Natural Science Foundation of China (60772022);PCSIRT program (IRT0609);111 Project (B07005) of China;BUPT Excellent Ph. D Students Foundation

摘　　要：This article puts forward a novel routing architecture for complex optical network,which core component is path calculation element （PCE）.As is well known,the PCE-based distributed path computation structure is making the routing control and computation loosely coupled from traditional control plane.In the study,the resource allocation and routing algorithm are the critical part of PCE hierarchy.To compare the performance of new architecture and the traditional one,the user uses the flooding suppression,routing delay,resource utilization and traffic blocking probability as performance simulation parameters and taking the verification simulation on objective modular network testbed （OMNeT） platform against to source-node routing architecture.The numerical analysis,computer simulation and experiment work indicate that the operation of PCE-based routing architecture can reduce the flooding information of path calculation request as well as the routing hops significantly and improve the quality of service （QoS） by decreasing the blocking probability when failure happened.This article puts forward a novel routing architecture for complex optical network,which core component is path calculation element （PCE）.As is well known,the PCE-based distributed path computation structure is making the routing control and computation loosely coupled from traditional control plane.In the study,the resource allocation and routing algorithm are the critical part of PCE hierarchy.To compare the performance of new architecture and the traditional one,the user uses the flooding suppression,routing delay,resource utilization and traffic blocking probability as performance simulation parameters and taking the verification simulation on objective modular network testbed （OMNeT） platform against to source-node routing architecture.The numerical analysis,computer simulation and experiment work indicate that the operation of PCE-based routing architecture can reduce the flooding information of path calculation request as well as the routing hops significantly and improve the quality of service （QoS） by decreasing the blocking probability when failure happened.

关 键 词：complex optical network PCE routing architecture 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术] TN929.1[自动化与计算机技术—计算机科学与技术]