刘焕淋^1,,,
王展鹏¹,
任杰¹,
陈勇²,
方菲¹,
温濛¹
1.重庆邮电大学通信与信息工程学院 重庆 400065
2.重庆邮电大学自动化学院 重庆 400065
基金项目:国家自然科学基金(51977021)，重庆市自然科学基金(2019jcyj-msxmX0613, 2020jcyj-msxmX0682)

详细信息

作者简介:刘焕淋：女，1970年生，教授，研究方向为光通信技术与网络
王展鹏：男，1996年生，硕士生，研究方向为弹性光网络
任杰：女，1998年生，硕士生，研究方向为光节点调度
陈勇：男，1963年生，教授，研究方向为光通信与传感检测
方菲：女，1995年生，硕士生，研究方向为光节点能效调度
温濛：女，1997年生，硕士生，研究方向为光网络资源分配

通讯作者:刘焕淋　liuhl2@sina.com

中图分类号:TN929.11

计量

文章访问数:300
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被引次数:0

出版历程

收稿日期:2020-07-16
修回日期:2021-01-03
网络出版日期:2021-01-07
刊出日期:2021-08-10

Conflict Resolution of Elastic Optical Switching Node Based on Inter Modes Crosstalk-avoidance

Huanlin LIU^1,,,
Zhanpeng WANG¹,
Jie REN¹,
Yong CHEN²,
Fei FANG¹,
Meng WEN¹
1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2. School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
Funds:The National Natural Science Foundation of China (51977021), Chongqing Natural Science Foundation (2019 jcyj-msxmX0613, 2020jcyj-msxmX0682)


摘要
摘要:为了减少业务在少模光纤空分复用弹性光网络全光交换节点内资源冲突的概率，该文在全光分层节点结构中配置共享的有限频谱转换器与资源预留模块(LARSL)，提出基于模式间串扰避免的空-频-时域联合资源冲突解决算法(LARSL-CACRA)。在空-频域，为LARSL-CACRA设计基于模式间串扰避免的滑动窗的模式-频谱资源块计算方法，使频谱冲突业务获得负载更均衡的模式-频谱资源块。对于仍然冲突的业务，LARSL-CACRA使用时域资源预留模块，进一步降低业务带宽阻塞率。仿真结果表明，该文设计的LARSL-CACRA可以改善交换节点带宽阻塞率，并减少业务平均时延。
关键词:空分复用弹性光网络/
冲突解决/
串扰避免/
模式-频谱资源块/
带宽阻塞率
Abstract:For addressing the requests conflict in all-optical switching node of space-division multiplexing elastic optical network with few-mode fibers, an all-optical Layered Architecture based on Resource reservation module and Shared Limited-range spectrum converter (LARSL) is studied in the paper. First, a inter modes Crosstalk Avoidance-based on space, frequency and time domain combing resource Conflict Resolution Algorithm for LARSL (LARSL-CACRA) is put forward. Then, a calculation method for crosstalk-avoidance resource block using sliding window is designed to search the more balanced mode-spectrum resource black for the spectrum conflicted requests in the space-frequency domain. Moreover, a time domain resource reservation module is designed to reserve still conflicting requests to next scheduling time for further reducing the bandwidth blocking probability. Simulation result show that the proposed LARSL-CACRA can decrease node’s bandwidth blocking probability and can also reduce the cache delay.
Key words:Space division multiplexing elastic optical network/
Conflict resolution/
Crosstalk-avoidance/
Mode-spectrum resource block/
Bandwidth blocking probability



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