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首页> 外文会议>Progress In Electromagnetic Research Symposium >Shared risk link groups (SRLG)-aware virtual network mapping in space division multiplexing (SDM) optical networks with multi-mode fibers
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Shared risk link groups (SRLG)-aware virtual network mapping in space division multiplexing (SDM) optical networks with multi-mode fibers

机译：具有多模光纤的空分复用（SDM）光网络中可识别共享风险链接组（SRLG）的虚拟网络映射

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摘要

As the most promising solution to sustain network capacity scaling beyond the fundamental nonlinear Shannon limits of standard single-mode fibers, space division multiplexing (SDM) has attracted enormous attention. To utilize the dimension of “space”, including mode-division multiplexing (MDM) using multi-mode (few-mode) fibers and core multiplexing using multi-core fibers, SDM can substantially increase the spectral bandwidth of a fiber-optic communication channel. In SDM optical networks, virtual network mapping becomes very complex, because the resource dimension has increased, meanwhile redundant resources and multi-dimensional resource fragments are more difficult to deal with, which will increase the blocking probability and decrease the utilization of spectrum resources. On the other hand, many connection requests with high quality of service (QoS) need physical network to provide high survivability for network resources to resist virtual link or virtual node failure. It determines the physical paths and the appropriate resources that are used to support a virtual network with predefined characteristics. A novel algorithm for the problem of shared backup path protected routing, spectrum and mode allocation (SBPP-RSMA) under dynamic traffic conditions is proposed, so as to protect virtual network and enhance the network resource utilization with lower blocking effectively and increase share ratio of spectrum resources. Finally, performance of our novel algorithm in terms of blocking probability and spectrum utilization is discussed with some simulation results.
机译：作为维持网络容量扩展超出标准单模光纤的基本非线性Shannon限制的最有希望的解决方案，空分复用（SDM）引起了极大的关注。为了利用“空间”的维度，包括使用多模（少量模式）光纤的模分复用（MDM）和使用多芯光纤的纤芯多路复用，SDM可以显着增加光纤通信信道的频谱带宽。在SDM光网络中，由于资源规模的增加，虚拟网络的映射变得非常复杂，同时冗余资源和多维资源碎片也更加难以处理，从而增加了阻塞的可能性，降低了频谱资源的利用率。另一方面，许多具有高服务质量（QoS）的连接请求都需要物理网络来为网络资源提供高生存能力，以抵抗虚拟链路或虚拟节点故障。它确定用于支持具有预定义特征的虚拟网络的物理路径和适当的资源。提出了一种针对动态流量条件下共享备份路径保护的路由，频谱和模式分配（SBPP-RSMA）问题的新算法，以保护虚拟网络并以较低的阻塞率有效地提高网络资源利用率，提高网络共享率。频谱资源。最后，通过一些仿真结果讨论了我们的新算法在阻塞概率和频谱利用率方面的性能。

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