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1.国网宁夏电力有限公司 电力科学研究院,银川 750004
2.北京邮电大学 信息光子学与光通信国家重点实验室,北京 100876
王峰(1989-),男,宁夏青铜峡人。高级工程师,硕士,主要研究方向为信息通信和网络安全领域。
郁小松,副教授。E-mail:xiaosongyu@bupt.edu.cn
纸质出版日期:2024-10-10,
收稿日期:2024-02-28,
修回日期:2024-04-08,
移动端阅览
王峰,刘旻钰,郁小松,等. 智能弹性光网络中基于碎片化指数的频谱重构算法研究[J].光通信研究,2024(5):240045.
Wang F, Liu M Y, Yu X S,et al. Spectrum Defragmentation Algorithm based on Fragmentation Index in Intelligent Elastic Optical Network[J]. Study on Optical Communications,2024(5):240045.
王峰,刘旻钰,郁小松,等. 智能弹性光网络中基于碎片化指数的频谱重构算法研究[J].光通信研究,2024(5):240045. DOI: 10.13756/j.gtxyj.2024.240045.
Wang F, Liu M Y, Yu X S,et al. Spectrum Defragmentation Algorithm based on Fragmentation Index in Intelligent Elastic Optical Network[J]. Study on Optical Communications,2024(5):240045. DOI: 10.13756/j.gtxyj.2024.240045.
【目的】
2
智能弹性光网络作为一种新兴的光通信技术,为日益增长的电力通信需求提供了更高的带宽和灵活性。然而,由于不同通信请求的频谱需求大小和分布不均匀,可能会导致频谱资源在网络中出现碎片化的情况,并导致频谱资源的浪费和网络性能的降低。
【方法】
2
文章介绍了一种碎片化指数的评估方法,并以此为参考判断是否要对正在运行的业务进行频谱重构的操作。
【结果】
2
仿真实验结果表明,文章所提算法与传统算法相比,带宽阻塞率能够降低5%至30%不等,且业务量越大,带宽阻塞率降低越明显。
【结论】
2
文章所提算法综合考虑了单根光纤上频谱碎片所占比例和链路上业务的平均频隙,以及各时隙在每个纤芯的占用权重,从多维角度对网络的频隙占用情况做出评估,为后续资源分配提供了一个高效的优化方案。
【Objective】
2
As a new optical communication technology
intelligent elastic optical network provides higher bandwidth and flexibility to meet the increasing demand of power communication. However
due to the uneven spectrum demand size and distribution of different communication requests
it may lead to fragmentation of spectrum resources in the network. These fragmented spectrum resources may result in the waste of spectrum resources and the degradation of network performance.
【Methods】
2
This paper introduces an evaluation method of fragmentation index
and takes it as a reference to judge whether to carry out spectrum defragmentation operations for running services.
【Results】
2
The simulation results show that compared with the traditional algorithm
the bandwidth blocking rate can be reduced by 5% to 30%. It is also shown that the the bandwidth blocking rate reduction is more obvious when the traffic volume is larger.
【Conclusion】
2
The algorithm proposed in this paper comprehensively considers the proportion of spectrum fragments on a single fiber
the average frequency gap of services on the link
and the occupation weight of each time slot in each fiber core. This paper also evaluates the frequency gap occupation of the network from a multidimensional perspective
providing an efficient optimization scheme for resource allocation.
智能弹性光网络资源分配频谱碎片整理
intelligent elastic optical networkresource allocationspectrum fragmentation
许志敏, 韩禄. 空分复用弹性光网络介绍与分析[J]. 电子世界, 2020(19): 64-67.
Xu Z M, Han L. Introduction and Analysis of Space Division Multiplexing Elastic Optical Network[J]. Electronics World, 2020(19): 64-67.
Su J, Zhang J, Wang J, et al. Dynamic Impairment-aware RMCSA in Multi-core Fiber-based Elastic Optical Networks[J]. Optics Communications, 2022, 518: 128361.
Faezeh Y, Ghaffarpour R A, Amin G. Fragmentation and Time Aware Algorithms in Spectrum and Spatial Assignment for Space Division Multiplexed Elastic Optical Networks (SDM-EON)[J]. Computer Networks, 2020, 174: 107232.
蔡一峰. 基于多芯光纤的空分复用弹性光网络频谱分配算法研究[D]. 南京: 南京邮电大学, 2022.
Cai Y F. Research on Spectrum Allocation Algorithm of Space-division Multiplexing Elastic Optical Network based on Multicore Fibers[D]. Nanjing, China: Nanjing University of Posts and Telecommunications, 2022.
陈鑫. 空分复用弹性光网络中碎片和串扰感知的路由频谱分配方法及其应用研究[D]. 南京: 南京邮电大学, 2023.
Chen X. Research on Routing Spectrum Allocation and Its Application with Fragment and Crosstalk Awareness in Space Division Multiplexed Elastic Optical Networks[D]. Nanjing, China: Nanjing University of Posts and Telecommunications, 2023.
鲁双贵, 孙严智, 罗海林, 等. 弹性光网络中频谱碎片整理分析[J]. 长江信息通信, 2021, 34(10): 166-170.
Lu S G, Sun Y Z, Luo H L, et al. Spectrum Defragmentation Analysis in Elastic Optical Networks [J]. Changjiang Information & Communications, 2021, 34(10): 166-170.
符小东, 王耀攀, 沈一春, 等. 数据中心弹性光网络专用路径保护方法研究[J]. 光通信研究, 2022(6): 16-21.
Fu X D, Wang Y P, Shen Y C, et al. The Research on Dedicated-path Protection Methods in Elastic Optical Networks with Data Centers[J]. Study on Optical Communications, 2022(6): 16-21.
蓝求旺. 基于空分复用的弹性光网络中碎片及串扰感知资源分配研究[D]. 南京: 南京邮电大学, 2022.
Lan Q W. Research on Fragment and Crosstalk Awared Resource Allocation in Space Division Multiplexing Elastic Optical Network(SDM-EON)[D]. Nanjing, China: Nanjing University of Posts and Telecommunications, 2022.
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