空分复用弹性光网络碎片和串扰感知路由纤芯与频谱分配算法  

Fragmentation and Crosstalk-Aware Routing,Core,and Spectrum Allocation Algorithm in Space Division Multiplexing Elastic Optical Networks

作　　者：乔宇鑫 宋成智 何荣希[1] Qiao Yuxin;Song Chengzhi;He Rongxi(College of Information Science and Technology,Dalian Maritime University,Dalian 116026,Liaoning,China)

机构地区：[1]大连海事大学信息科学技术学院,辽宁大连116026

出　　处：《激光与光电子学进展》2024年第17期83-90,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61371091,61801074,62371085);大连市科技创新基金(2019J11CY015)。

摘　　要：针对空分复用弹性光网络的频谱碎片和芯间串扰问题,提出一种频谱碎片和串扰感知的路由纤芯与频谱分配算法。该算法在选路阶段,综合考虑资源使用量、串扰域重叠度和频谱碎片等因素,选择资源使用少、串扰和碎片化程度小的候选路径,在纤芯和频谱分配阶段,提出“串扰域匹配度”和“串扰域差异度”度量因子,在此基础上提出联合考虑串扰碎片和频谱碎片的综合度量指标“串扰域碎片度”,并选择串扰域碎片度最小的候选频谱块进行分配。仿真结果表明,该算法能降低带宽阻塞率、提高频谱利用率。In order to solve the problem of spectrum fragmentation and inter-core crosstalk in space division multiplexed elastic optical networks(SDM-EON),a spectrum fragmentation and crosstalk-aware routing,core,and spectrum allocation(SFCRCSA)is proposed.In the routing stage,this algorithm comprehensively considers factors such as resource usage,crosstalk domain overlap,and spectrum fragmentation and selects candidate paths with low resource usage,low crosstalk,and fragmentation.In the core and spectrum allocation stages,the measurement factors of“crosstalk domain matching”and“crosstalk domain difference”are proposed.Based on this,a comprehensive measurement index of“crosstalk domain fragmentation”is presented to jointly consider crosstalk fragments and spectrum fragments,and the candidate spectrum block with the smallest value of crosstalk domain fragmentation is selected to establish lightpaths for arriving requests.The simulation results show that the proposed algorithm can reduce bandwidth blocking rates and improve the spectrum utilization.

关 键 词：空分复用弹性光网络 频谱碎片 串扰碎片 路由纤芯与频谱分配 

分 类 号：TN929.11[电子电信—通信与信息系统]