Dynamic Protection-at-Lightpath Algorithms in Traffic-Grooming WDM Mesh Networks  

作　　者：HERongxi WENHaibo LILemin 

机构地区：[1]CollegeofInformationEngineering,DalianMaritimeUniversity,Dalian116026,China [2]CollegeofCommunicationEngineering,UniversityofElectronicScienceadTechnologyofChina,Chengdu610054,China

出　　处：《Chinese Journal of Electronics》2005年第3期396-401,共6页电子学报（英文版）

摘　　要：Under the constraints of the number of transceivers per node and wavelength continuity, we investigate the problem of provisioning Protection-at-lightpath (PAL) level for connections with different bandwidth granularities in traffic-grooming WDM mesh networks. We first develop a new Protection graph model (PGM) to represent current state of the network, i.e., the information about transceivers, wavelengths, protected lightpath, bandwidth, etc. We then present two grooming policies for PAL, which are called Minimal wavelength-link policy (MWP) and Minimal transceiver policy (MTP). Based on the PGM, we propose two dynamic PAL algorithms with MWP and MTP respectively, which are called Minimal wavelength-link method (MWM) and Minimal transceiver method (MTM). At last we compare the performance of MWM and MTM with other methods utilizing different grooming policies presented in previous literatures via simulations. Our results show that MWM and MTM outperform other methods significantly and MWM has a better performance than MTM.

关 键 词：网状网络 无线电收发器 运算法则 MTM MWM SDH 通信网 

分 类 号：TN915[电子电信—通信与信息系统]