OSNR-aware lightpath provisioning in distributed optical network  

作　　者：白晖峰 纪越峰 

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

出　　处：《Chinese Optics Letters》2011年第5期23-26,共4页中国光学快报（英文版）

基　　金：supported in part by the National "863" Program of China (Nos. 2009AA01z255 and 2009AA01A345);the National "973" Program of China (No.2007CB310705);the National Natural Science Foundation of China (No. 60932004);the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 200800130001)

摘　　要：An optical signal-to-noise ratio （OSNR） aware lightpath provisioning mechanism （OSNR-LPM） is proposed for distributed optical networks. This OSNR-LPM takes the OSNR value of the lightwave along the lightpath into consideration when establishing the lightpath for the connection request using resource reservation protocol-traffic engineering （RSVP-TE）. Moreover, the OSNR-LPM makes full advantages of the OSNR monitoring function in each node and assigns the lightwave by judging the OSNR value carried by the signaling message in order to guarantee the reliable establishment of the lightpath in the data plane. The simulation results show that the OSNR-LPM outperforms other lightpath assignment mechanisms in terms of real blocking probability in the data plane.An optical signal-to-noise ratio （OSNR） aware lightpath provisioning mechanism （OSNR-LPM） is proposed for distributed optical networks. This OSNR-LPM takes the OSNR value of the lightwave along the lightpath into consideration when establishing the lightpath for the connection request using resource reservation protocol-traffic engineering （RSVP-TE）. Moreover, the OSNR-LPM makes full advantages of the OSNR monitoring function in each node and assigns the lightwave by judging the OSNR value carried by the signaling message in order to guarantee the reliable establishment of the lightpath in the data plane. The simulation results show that the OSNR-LPM outperforms other lightpath assignment mechanisms in terms of real blocking probability in the data plane.

关 键 词：Blocking probability Fiber optic networks Signal systems Signal to noise ratio Telecommunication traffic 

分 类 号：TN929.11[电子电信—通信与信息系统] O435.2[电子电信—信息与通信工程]