多芯光纤中基于共享风险组的生存性RCSA算法  

Survivability RCSA algorithm based on shared risk group in multi-core fiber

作　　者：陈尚君 蔡一峰 蓝求旺 陈鑫 沈建华[1] CHEN Shangjun;CAI Yifeng;LAN Qiuwang;CHEN Xin;SHEN Jianhua(College of Communications and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003

出　　处：《光通信技术》2022年第5期40-44,共5页Optical Communication Technology

摘　　要：传统空分复用弹性光网络中仅考虑纤芯频谱资源的无保护分配,缺少对业务生存性的保障。提出了一种基于共享风险组的生存性路由纤芯频谱分配(RCSA)改进算法,该算法基于共享风险纤芯组的设想,在单根多芯光纤中同时分配业务的工作频隙和保护频隙,并基于纤芯间串扰机理引入了业务分配优先度参数,根据优先度选择引起串扰最小的频隙分配方案。仿真结果表明,所提算法可以在保障业务生存性的同时有效减少带宽阻塞率和芯间串扰。Traditional space division multiplexing flexible optical network(SDM-EON) only considers the unprotected allocation of fiber core spectrum resources, which lacks of survivability guarantee. This paper proposes an survivable routing core spectrum allocation(RCSA) improved algorithm based on shared risk group. The algorithm allocates the working frequency slots and the protection frequency slots in single multi-core fiber based on the idea of shared risk core group at the same time, and puts forward the priority parameter of service allocation based on the crosstalk mechanism, and the frequency slots allocation scheme which causes the least crosstalk is selected according to the priority. Simulation results show that the proposed algorithm can effectively reduce the bandwidth blocking probability and inter-core crosstalk while ensuring service survivability.

关 键 词：空分复用弹性光网路 共享风险组 路由纤芯频谱资源分配 生存性 

分 类 号：TN914[电子电信—通信与信息系统]