基于光路负载均衡和邻域匹配的串扰感知资源分配方法

doi:10.12263/DZXB.20211049

电子学报 ›› 2022, Vol. 50 ›› Issue (11): 2746-2753.DOI: 10.12263/DZXB.20211049

基于光路负载均衡和邻域匹配的串扰感知资源分配方法

刘焕淋, 胡俊岭, 任杰, 胡会霞, 唐畅, 陈浩楠

重庆邮电大学通信与信息工程学院，重庆 400065

收稿日期:2021-08-04 修回日期:2021-11-28 出版日期:2022-11-25
- 作者简介:
- 刘焕淋　女, 1970年2月出生于重庆市.现为重庆邮电大学教授、博士生导师.主要研究方向为光通信技术和网络.E‑mail: liuhl@cqupt.edu.cn
- 基金资助:
- 国家自然科学基金 (51977021); 重庆市自然科学基金面上项目 (2019jcyj-msxmX0613); 重庆市教育委员会科学技术研究项目 (KJQN201900635)

Crosstalk Aware Resource Allocation Method Based on Lightpath Load Balancing and Neighborhood Matching

LIU Huan-lin, HU Jun-ling, REN Jie, HU Hui-xia, TANG Chang, CHEN Hao-nan

School of Communication and Information Engineering，Chongqing University of Posts and Telecommunications，Chongqing 400065，China

Received:2021-08-04 Revised:2021-11-28 Online:2022-11-25 Published:2022-11-19

摘要/Abstract

摘要：

针对空分复用弹性光网络（Space Division Multiplexing-Elastic Optical Networks, SDM-EONs）的芯间串扰和频谱碎片化问题，该文提出一种考虑业务持续时间、光路邻域资源匹配度及芯间串扰的路由频谱纤芯分配算法.在业务的路由选择阶段，该文设计基于光路负载均衡和频谱碎片减少的路由策略；在纤芯选择阶段，设计兼顾纤芯负载及减少纤芯间串扰的纤芯选择方法；在时-频资源块分配阶段，设计考虑时-频资源碎片变化小和邻域匹配度变化小的资源分配方法.仿真结果表明，该文所提算法可以降低网络带宽阻塞率和提高频谱资源的使用效率.

关键词: 资源分配, 串扰感知, 光路负载均衡, 邻域匹配度, 频谱碎片, 带宽阻塞率

Abstract:

To solve the problems of inter-core crosstalk and spectrum fragmentation in space division multiplexing-elastic optical networks(SDM-EONs), a routing spectrum core allocation with holding time, lightpath’s neighborhood matching degree and inter-core crosstalk(TMD-XT-RSCA) is proposed. In the service routing stage, a routing strategy is designed to balance the lightpath’s load and reduce resource fragment. In the core selection, a core selection method is designed to balance the fiber core’s load and decrease inter-core crosstalk. In the time-spectrum block allocation stage, a resource allocation method through considering small change of time-spectrum fragmentation and small change of neighborhood matching degree is designed. The simulation results show that the proposed TMD-XT-RSCA algorithm can reduce the bandwidth blocking probability and improve the spectrum utilization.

Key words: resource allocation, crosstalk aware, lightpath load balancing, neighborhood matching degree, spectrum fragmentation, bandwidth blocking probability

中图分类号:

TN929.11

刘焕淋, 胡俊岭, 任杰, 胡会霞, 唐畅, 陈浩楠. 基于光路负载均衡和邻域匹配的串扰感知资源分配方法[J]. 电子学报, 2022, 50(11): 2746-2753.

LIU Huan-lin, HU Jun-ling, REN Jie, HU Hui-xia, TANG Chang, CHEN Hao-nan. Crosstalk Aware Resource Allocation Method Based on Lightpath Load Balancing and Neighborhood Matching[J]. Acta Electronica Sinica, 2022, 50(11): 2746-2753.

图/表 6

参考文献 17

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参数	含义	数值
η	耦合系数	4×10^-4
r	弯曲半径	50mm
β	传播常数	4×10⁶ m^-1
ω_th	芯间距	45μm
XT_th1	. XT阈值	-14dB
XT_th2	QPSK XT阈值	-18.5dB
XT_th3	8QAM XT阈值	-21dB
XT_th4	16QAM XT阈值	-25dB
XT_th5	32QAM XT阈值	-27 dB
XT_th6	64QAM XT阈值	-34dB

参数	含义	数值
η	耦合系数	4×10^-4
r	弯曲半径	50mm
β	传播常数	4×10⁶ m^-1
ω_th	芯间距	45μm
XT_th1	. XT阈值	-14dB
XT_th2	QPSK XT阈值	-18.5dB
XT_th3	8QAM XT阈值	-21dB
XT_th4	16QAM XT阈值	-25dB
XT_th5	32QAM XT阈值	-27 dB
XT_th6	64QAM XT阈值	-34dB

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基于光路负载均衡和邻域匹配的串扰感知资源分配方法

Crosstalk Aware Resource Allocation Method Based on Lightpath Load Balancing and Neighborhood Matching

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