• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical fiber technology >Novel elastic protection against DDF failures in an enhanced software-defined SIEPON
【24h】

Novel elastic protection against DDF failures in an enhanced software-defined SIEPON

机译：增强的软件定义SIEPON中针对DDF故障的新型弹性保护

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ever-increasing bandwidth demands on passive optical networks (PONs) are pushing the utilization of every fiber strand to its limit. This is mandating comprehensive protection until the end of the distribution drop fiber (DDF). Hence, it is important to provide refined protection with an advanced fault-protection architecture and recovery mechanism that is able to cope with various DDF failures. We propose a novel elastic protection against DDF failures that incorporates a software-defined networking (SDN) capability and a bus protection line to enhance the resiliency of the existing Service Interoperability in Ethernet Passive Optical Networks (SIEPON) system. We propose the addition of an integrated SDN controller and flow tables to the optical line terminal and optical network units (ONUs) in order to deliver various DDF protection scenarios. The proposed architecture enables flexible assignment of backup ONU(s) in pre/post-fault conditions depending on the PON traffic load. A transient backup ONU and multiple backup ONUs can be deployed in the pre-fault and post-fault scenarios, respectively. Our extensively discussed simulation results show that our proposed architecture provides better overall throughput and drop probability compared to the architecture with a fixed DDF protection mechanism. It does so while still maintaining overall QoS performance in terms of packet delay, mean jitter, packet loss, and throughput under various fault conditions. (C) 2017 Elsevier Inc. All rights reserved.
机译：对无源光网络（PON）的带宽需求的不断增长将每根光纤的利用率推向了极限。这是强制性的全面保护措施，直到分配分接光纤（DDF）结束。因此，重要的是要提供能够应对各种DDF故障的高级故障保护架构和恢复机制，以提供完善的保护。我们提出了一种针对DDF故障的新型弹性保护，该保护结合了软件定义的网络（SDN）功能和总线保护线路，以增强以太网无源光网络（SIEPON）系统中现有服务互操作性的弹性。我们建议向光线路终端和光网络单元（ONU）添加集成的SDN控制器和流表，以提供各种DDF保护方案。所提出的体系结构能够根据PON流量负载在故障前/故障后条件下灵活分配备用ONU。可以在故障前和故障后的场景中分别部署瞬态备份ONU和多个备份ONU。我们广泛讨论的仿真结果表明，与具有固定DDF保护机制的体系结构相比，我们提出的体系结构可提供更好的总体吞吐量和下降概率。在这样做的同时，仍可以在各种故障情况下，在包延迟，平均抖动，包丢失和吞吐量方面保持整体QoS性能。 （C）2017 Elsevier Inc.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号