波带交换光网络中的一种动态路由和波长分配算法-北京邮电大学学报.PDFVIP

2004 10 Oct. 2004 27 5 Journal of Beijing University of Posts and Telecommunications ol. 27 No. 5 　　: 1007-5321(2004) 05-0045-05 宋鸿升,　徐云斌,　金文研,　顾畹仪 (, 100876) : ( WBS), —— ( LBP). , LBP 、 . ,, . 　　: ; ; : TN929. 11　　　: A A Dynamic Routing and Wavelength Assignment Algorithm in Waveband Switching Optical Network SONG Hong-sheng,　XU Yun-bin,　JIN Wen-yan,　GU Wan-yi ( Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China) Abstract The characteristics of connections in waveband switching WBS optical: ( ) network are analyzed and a new dynamic routing and wavelength assignment algo-, rithm suitable for WBS network is proposed, which is called the longest waveband path ( LBP) algorithm. In order to effectively save network cost and reduce net- work blocking probability LBP algorithm tries to use three ways with different pri-, orities to set up a new wavelength connection which are using the longest estab-, lished waveband path, establishing a new end-to-end waveband path and establish- ing a step-by-step wavelength path. In this paper, the blocking performances of WBS network are compared with different node switching ratios and different rout- ing methods using LBP algorithm Moreover the optimal switching ratios of multi. - ( - ) granularity optical cross connect MG OXC are analyzed under different traffic : 2003-09-05 : ; “863”( 2003AA122530) : ( 1976— ) , , . E-mail: hongshengsong@ 263. net ( 1946— ) , , , . - : @ . . E mail wyg bupt edu cn 46