空分复用弹性光网络中基于频谱集中度的频谱冲突解决算法  

Spectrum conflict resolution algorithm based on spectrum concentration in space division multiplexing elastic optical network

作　　者：方菲 刘焕淋[1] 陈勇[1] 胡会霞 FANG Fei;LIU Huanlin;CEHN Yong;HU Huixia(Optical Communication and Network Key Laboratory,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学光通信与网络重点实验室,重庆400065

出　　处：《光通信技术》2020年第7期32-35,共4页Optical Communication Technology

基　　金：国家自然科学基金(61275077)资助;国家自然科学基金(52010118000Q)资助;重庆市前沿基础研究项目(2015jcyjA40024)资助。

摘　　要：为了解决空分复用弹性光网络节点中业务冲突问题,在动态功能节点结构中配置全频谱转换器(FRSC)和空间选择开关(SSS)来转换冲突业务的频谱,并在该节点结构基础上提出一种基于频谱集中度的频谱冲突解决(SCRASC)算法,该算法综合考虑已使用的频谱块占比以及空闲频谱块与最大频谱块的距离,优化频谱的集中度。仿真结果表明该算法在带宽阻塞率方面取得了较优的性能。In order to solve the problem of service conflict in space division multiplexing elastic optical network nodes,full range spectrum converter(FRSC)and space selection switch(SSS)are configured in the dynamic function node structure to convert the spectrum of conflicting services.Based on this node structure,a spectrum conflict resolution algorithm based on spectrum concentration(SCRASC)is proposed.This algorithm comprehensively considers the used spectrum block ratio and the distance between the free frequency block spectrum and the largest spectrum block to optimize the frequency of the spectrum concentration.Simulation results show that the algorithm achieves better performance in terms of bandwidth blocking rate.

关 键 词：空分复用弹性光网络 频谱冲突 节点结构 全频谱转换器 空间选择开关 

分 类 号：TN929.11[电子电信—通信与信息系统]