光通信研究Issue(5)：40-45,6.DOI:10.13756/j.gtxyj.2024.230182
弹性光网络分层流量疏导优化方法(特邀)
Stratification Traffic Grooming Methods in Elastic Optical Networks
摘要
Abstract
[Objective]With the rapid development of cloud computing,big data technology,and Data Center(DC),the scale and number of DC continue to expand,and the bandwidth resources and energy consumption of optical networks is also growing rapidly.It can be seen that the method can effectively reduce both bandwidth resources and energy consumption in the network has received widespread attention.[Methods]Considering the characteristics of both the network energy consuming compo-nents,the spectrum resource allocation,and the selection of different modulation formats,we employ both adaptive traffic grooming method and a spectrum layering method for network traffic grooming.A Distance-adaptive Stratification Grooming Method(DSGM)in elastic optical networks is also proposed.We can employ the adaptive selection of different modulation for-mats to divide spectrum resources into different spectrum layers for network traffic grooming.In this way,on the one hand,the distance adaptive modulation method can select different modulation formats based on the length of the connection request working path.On the other hand,based on the spectrum layered traffic grooming method,the idle spectrum resources of each fiber link are layered according to different rates of optical channels.The appropriate optical channels are selected for traffic grooming through optimizing the use of spectrum resources based on the remaining bandwidth resources of the fiber links.We also introduce three different traffic grooming methods for comparison,including Spectrum Stratification Grooming Method(SSGM),Traditional Traffic Grooming Method(TTGM),and Traditional Method Without Grooming(TMWG).[Results]The simulation results show that the proposed approach significantly reduces the energy consumption,and the blocking proba-bility.It also improves the network spectrum efficiency compared with SSGM,TTGM,and TMWG method.[Conclusion]We can realize the network resource optimization by using the stratification traffic grooming methods in elastic optical networks.关键词
数据中心弹性光网络/流量疏导/距离自适应调制Key words
DC elastic optical network/traffic grooming/distance adaptive modulation分类
信息技术与安全科学引用本文复制引用
郝志芃,杨慧洁,陈虹,高明义,鞠卫国,陈伯文..弹性光网络分层流量疏导优化方法(特邀)[J].光通信研究,2024,(5):40-45,6.基金项目
国家重点研发计划资助项目(2022YFB2903303) （2022YFB2903303）
江苏省自然科学基金优秀青年资助项目(BK20200099) （BK20200099）
