电子学报 ›› 2022, Vol. 50 ›› Issue (1): 135-141.DOI: 10.12263/DZXB.20200916

• 学术论文 • 上一篇    下一篇

基于全光节点频谱集中度和频谱离散转换的业务调度方法

刘焕淋1, 温濛1, 陈勇2, 任杰1, 胡俊岭1   

  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
  • 收稿日期:2020-08-21 修回日期:2021-05-26 出版日期:2022-01-25
    • 作者简介:
    • 刘焕淋 女,1970年生,重庆人,博士.重庆邮电大学教授、硕士生导师.主要研究方向为光通信技术和网络. E-mail:liuhl@cqupt.edu.cn
      温 濛 女,1995年生,四川冕宁人.重庆邮电大学硕士研究生.主要研究方向为弹性光网络的资源优化分配. E-mail:2227673840@qq.com
    • 基金资助:
    • 国家自然科学基金 (NSFC51977021); 重庆市自然科学基金面上项目 (2019jcyj-msxmX0613)

Service Scheduling Based on Spectrum Aggregation and Spectrum Discrete Conversion of Optical Node

LIU Huan-lin1, WEN Meng1, CHEN Yong2, REN Jie1, HU Jun-ling1   

  1. 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
  • Received:2020-08-21 Revised:2021-05-26 Online:2022-01-25 Published:2022-01-25
    • Supported by:
    • National Natural Science Foundation of China (NSFC51977021); General Program of Natural Science Foundation of Chongqing Municipality, China (2019jcyj-msxmX0613)

摘要:

为了减少多芯光纤空分复用弹性光网络中光节点业务调度的失败概率,该文基于共享有限波长转换器和光纤延迟线的动态功能光交换节点结构,提出基于频谱集中度和频谱离散转换的业务调度方法.该方法能将业务调度到频谱碎片少和频谱集中度高的输出端口和纤芯;对调度失败的业务,采用基于频谱离散转换度和时域缓存联合的冲突解决方法,减少业务在光交换节点的平均延迟并降低业务调度失败概率.仿真结果表明,本文所提的算法能在降低全光交换节点业务的带宽阻塞率的同时,减少频谱转换器的使用数目和业务的平均时延.

关键词: 空分复用弹性光网络, 业务调度, 频谱集中度, 频谱离散转换, 带宽阻塞率

Abstract:

In order to reduce the probability of service scheduling failure in multi-core fiber space division multiplexing elastic optical network, based on the dynamic functional architecture optical switching node with limited wavelength converter and fiber line delay(DASLF), the service scheduling based on spectrum aggregation and spectrum discrete conversion(SS-SASDC) is proposed for all-optical node in the paper. The proposed SS-SASDC can schedule the service to fiber port and fiber core with less spectrum fragmentation and high spectrum aggregation. For the conflict service, SS-SASDC algorithm adopts the conflict resolution method based on spectrum discrete conversion and time domain buffer to reduce the average delay and decrease the probability of traffic scheduling failure in optical switching node. Simulation results show that the proposed SS-SASDC algorithm can not only reduce service's bandwidth blocking probability, but also decrease the used number of spectrum converters, and reduce the cache delay of services.

Key words: space division multiplexing elastic optical network, service scheduling, spectrum aggregation, spectrum discrete conversion, bandwidth blocking probability

中图分类号: