弹性光网络中碎片问题的研究
|
摘要
由于弹性光网络(EON)在路由和频谱匹配时须同时满足波长连续性和频谱连续性双重约束,因此在频繁地动态建立和终结光路过程中,网络频谱将出现大量碎片。为改善EON碎片程度,提出一种动态路由和动态频谱匹配(Dynamic Routing and Dynamic Spectrum Fiting,DRDSF)策略,并通过构建实验模型对业务阻塞率和频谱资源利用率指标进行仿真分析。实验结果显示,相对于传统碎片清理机制,应用DRDSF策略后EON动态业务环境中产生的频谱碎片问题得到了更有效的控制,网络性能显著提高。
Elastic optical networks(EON) should be suitable for the two constrains of wavelength continuity and spectrum continuity when routing and spectrum matching. As a result, there will be a great deal of fragmentation in the network spectrum when building and terminating lightpaths in a dynamic manner. In order to improve the degree of EON fragmentation, this paper proposes a dynamic routing and dynamic spectrum fiting(DRDSF) strategy, and builds an experimental model to simulate the business blocking rate and spectrum resource utilization. The experimental results show that the DRDSF spectrum is more effective in controlling the spectrum fragmentation in EON dynamic business environment, compared with the traditional defragmentation cleaning mechanism. What is more, network performance can be improved significantly.
Elastic optical networks(EON) should be suitable for the two constrains of wavelength continuity and spectrum continuity when routing and spectrum matching. As a result, there will be a great deal of fragmentation in the network spectrum when building and terminating lightpaths in a dynamic manner. In order to improve the degree of EON fragmentation, this paper proposes a dynamic routing and dynamic spectrum fiting(DRDSF) strategy, and builds an experimental model to simulate the business blocking rate and spectrum resource utilization. The experimental results show that the DRDSF spectrum is more effective in controlling the spectrum fragmentation in EON dynamic business environment, compared with the traditional defragmentation cleaning mechanism. What is more, network performance can be improved significantly.
引文
[1]余庚,汤紫雄,王建彬.4G LTE制式下激光通信频偏补偿方法研究[J].激光杂志,2017(7):118-121.
[2]武文彦.智能光网络技术及应用[M].北京:电子工业出版社,2015:62-67.
[3]宫雷.频谱灵活光网络中基于独立模型的阻塞性能研究[D].北京:北京邮电大学,2016:52-56.
[4]刘焕淋,李瑞艳,孔德谦,等.基于多目标遗传算法优化弹性光网络的多路径保护机制[J].电子与信息学报,2016(9):91-97.
[5]宣贺君.弹性光网络中考虑节点安全性的频谱分配算法[J].中国激光,2016(12):199-206.
[6]冯海燕,沈建华.弹性光网络中支持虚级联的频谱分配算法[J].光通信技术,2016,40(2):5-7.
[7]刘海蛟,华楠,李艳和,等.面向动态业务的光网络失真机理分析[J].清华大学学报(自然科版),2015(11):7-12.
[8]徐展琦,王凯,丁喆,等.一种负载均衡的虚拟光网络映射算法[J].西安电子科技大学学报,2017(5):7-12.
[9]朱晓姝.OMNeT++仿真工具的研究与应用[J].大连工业大学学报,2015(1):62-65.
[10]李晨曦,刘英挺,毛杰,等.频谱灵活光网络中基于带宽压缩的柔性保护技术[J].电子技术应用,2016(6):106-108.
[2]武文彦.智能光网络技术及应用[M].北京:电子工业出版社,2015:62-67.
[3]宫雷.频谱灵活光网络中基于独立模型的阻塞性能研究[D].北京:北京邮电大学,2016:52-56.
[4]刘焕淋,李瑞艳,孔德谦,等.基于多目标遗传算法优化弹性光网络的多路径保护机制[J].电子与信息学报,2016(9):91-97.
[5]宣贺君.弹性光网络中考虑节点安全性的频谱分配算法[J].中国激光,2016(12):199-206.
[6]冯海燕,沈建华.弹性光网络中支持虚级联的频谱分配算法[J].光通信技术,2016,40(2):5-7.
[7]刘海蛟,华楠,李艳和,等.面向动态业务的光网络失真机理分析[J].清华大学学报(自然科版),2015(11):7-12.
[8]徐展琦,王凯,丁喆,等.一种负载均衡的虚拟光网络映射算法[J].西安电子科技大学学报,2017(5):7-12.
[9]朱晓姝.OMNeT++仿真工具的研究与应用[J].大连工业大学学报,2015(1):62-65.
[10]李晨曦,刘英挺,毛杰,等.频谱灵活光网络中基于带宽压缩的柔性保护技术[J].电子技术应用,2016(6):106-108.