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Crosstalk-aware virtual network embedding over inter-datacenter optical networks with few-mode fibers

机译:在具有少模光纤的数据中心间光网络上嵌入可识别串扰的虚拟网络

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摘要

Virtualization of datacenter (DC) infrastructures enables infrastructure providers (InPs) to provide novel services like virtual networks (VNs). Furthermore, optical networks have been employed to connect the metro-scale geographically distributed DCs. The synergistic virtualization of the DC infrastructures and optical networks enables the efficient VN service over inter-DC optical networks (inter-DCONs). While the capacity of the used standard single-mode fiber (SSMF) is limited by their nonlinear characteristics. Thus, mode-division multi-plexing (MDM) technology based on few-mode fibers (FMFs) could be employed to increase the capacity of optical networks. Whereas, modal crosstalk (XT) introduced by optical fibers and components deployed in the MDM optical networks impacts the performance of VN embedding (VNE) over inter-DCONs with FMFs. In this paper, we propose a XT-aware VNE mechanism over inter-DCONs with FMFs. The impact of XT is considered throughout the VNE procedures. The simulation results show that the proposed XT-aware VNE can achieves better performances of blocking probability and spectrum utilization compared to conventional VNE mechanisms.
机译:数据中心(DC)基础架构的虚拟化使基础架构提供商(InP)能够提供虚拟网络(VN)等新颖的服务。此外,已采用光网络来连接城域规模的地理上分散的DC。 DC基础设施和光网络的协同虚拟化可在DC间光网络(inter-DCON)上实现高效的VN服务。而所使用的标准单模光纤(SSMF)的容量受到其非线性特性的限制。因此,可以采用基于少模光纤(FMF)的模分多路复用(MDM)技术来增加光网络的容量。然而,由MDM光网络中部署的光纤和组件引入的模态串扰(XT)会影响具有FMF的DCON间的VN嵌入(VNE)性能。在本文中,我们提出了在具有FMF的DCON间实现XT感知的VNE机制。在整个VNE程序中都会考虑XT的影响。仿真结果表明,与传统的VNE机制相比,提出的XT感知VNE可以实现更好的阻塞概率和频谱利用率。

著录项

  • 来源
    《Optical fiber technology》 |2017年第12期|70-77|共8页
  • 作者单位

    BUPT, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    BUPT, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    BUPT, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    BUPT, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    BUPT, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    BUPT, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mode-division multiplexing; Modal crosstalk; Inter-datacenter optical networks; Virtual network embedding;

    机译:模分复用;模串扰;数据中心间光网络;虚拟网络嵌入;

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