摘要
路由、调制和频谱分配(RMSA)已成为提高弹性光网络(EONs)中频谱利用率的主要方法之一。针对RMSA的路由选择,提出了一种基于最短距离最少节点的多跳路由、调制和频谱分配(SDLN-MHRMSA)算法。该算法通过多跳路由的光-电-光转换器将最短距离最少节点的路径划分为一定数量的子光路径,然后在每条子光路径上根据距离自适应调制技术为业务请求进行频谱分配。理论分析和仿真结果表明:所提出的算法相较于传统基于最短路径的RMSA算法,在阻塞率、频谱利用率方面获得了较优的性能。
Routing,modulation and spectrum allocation(RMSA)has become one of the main methods to improve the utilization of spectrum in elastic optical networks(EONs).Aiming at the routing of RMSA,a multi-hop routing,modulation and spectrum allocation(SDLN-MHRMSA)algorithm based on the shortest distance and the least nodes is proposed.The algorithm divides the path of the shortest distance and the least nodes into a certain number of sub optical paths through the optical electric optical converter with multi-hop routing,and then allocates the spectrum for the traffic request according to the distance adaptive modulation technology on each sub optical path.Theoretical analysis and simulation results show that the proposed algorithm has better performance in blocking rate and spectrum resource utilization than the traditional RMSA algorithm based on the shortest path.
作者
李娜娜
宿纪松
包博文
胡劲华
任丹萍
赵继军
LI Nana;SU Jisong;BAO Bowen;HU Jinhua;REN Danping;ZHAO Jijun(School of Information and Electrical Engineering,Hebei University of Engineering,Handan Hebei 056038,China;State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China)
出处
《光通信技术》
北大核心
2020年第9期13-17,共5页
Optical Communication Technology
基金
国家自然科学基金(61905060)资助
河北省自然科学基金(F2019402240、F2018402198)资助
河北省教育厅研究生创新项目(CXZZSS2019072)资助。
关键词
弹性光网络
最少节点
多跳路由
阻塞率
频谱资源利用率
elastic optical networks
least nodes
multi-hop routing
blocking probability
spectrum resource utilization
