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Sleep-aware wavelength and bandwidth assignment scheme for TWDM PON

机译：TWDM PON的睡眠意识波长和带宽分配方案

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摘要

The energy efficiency and delay performance of PON are two inversely related phenomena. Higher sleep time of the Optical Network Units (ONUs) results in higher upstream (US) delays due to increased traffic queues during the ONU Asleep state. Although an efficient dynamic bandwidth and wavelength assignment (DWBA) scheme can decrease US delays by minimizing the bandwidth waste and improving the fairness of bandwidth distribution among the ONUs. However, the conventional DWBA schemes are not designed to work with cyclic sleep mode (CSM) and they keep on assigning bandwidth to ONUs even if the ONU is in Asleep state leading to wastage of bandwidth and degraded CSM performance. Therefore, in this work a sleep aware DWBA scheme for TWDM PON is presented to coordinate with CSM mode. It only assign bandwidth to Active ONUs during the guaranteed phase, surplus phase and excess phase allocation phases which minimizes the bandwidth waste and the bandwidth lost at the ONU end. The wavelength switching process is also improved by only considering the Active state ONUs to balance the traffic load on all the wavelengths. The simulation results support our claim as the SA-DWBA scheme on average achieves DWBA schemes due to up to 50% to 65% higher energy savings compared to other due to longer ONU Asleep times. However, the increased upstream delays of all the traffic classes in SA-DWBA scheme remain within the set delay limit of 50 ms.
机译：PON的能效和延迟性能是两种与相关现象相反。光学网络单元（ONU）的较高睡眠时间导致由于ONU睡眠状态期间的流量队列增加而导致的上游（US）延迟。尽管有效的动态带宽和波长分配（DWBA）方案可以通过最小化带宽浪费并提高ONU之间的带宽分布的公平性来降低美国延迟。然而，传统的DWBA方案不设计用于使用循环睡眠模式（CSM），并且即使ONU处于睡眠状态，它们也会继续为ONU分配带宽，导致带宽的浪费和降级CSM性能。因此，在这项工作中，展示了TWDM PON的睡眠意识DWBA方案以与CSM模式坐标。它只在保证阶段，剩余相位和过量相位分配阶段期间将带宽分配到有效的ONU，这最小化带宽浪费和磁盘端丢失的带宽。通过仅考虑活动状态ONU来平衡所有波长上的流量负载，还可以提高波长切换过程。仿真结果支持我们的索赔作为SA-DWBA方案平均达到DWBA方案，由于较长的ONU睡眠时间相比，能量节省高达50％至65％。但是，SA-DWBA方案中所有流量类的上游延迟增加仍然在50毫秒的设定延迟限制范围内。

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  • 来源
    《Optical and quantum electronics》 |2021年第6期|295.1-295.23|共23页
  • 作者

    Rizwan Aslam Butt; Muhammad Faheem; M. Waqar Ashraf; Asad Arfeen; Kamran Ali Memon; Attaullah Khawaja;

  • 作者单位

    Department of Electronic Engineering NED University of Engineering & Technology Karachi Pakistan;

    Department of Computer Engineering Bahuddin Zakariya University Multan Multan Pakistan;

    Department of Computer Engineering Abdullah Gul University Kayseri 38080 Turkey;

    Department of Electronic Engineering NED University of Engineering & Technology Karachi Pakistan;

    State Key Laboratory of Information Photonics and Optical Communications School of Electronic Engineering Beijing University of Posts and Telecommunications Beijing 100876 China;

    Department of Electronic Engineering NED University of Engineering & Technology Karachi Pakistan;

  • 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

    TWDM PON; Energy efficiency; Cyclic sleep mode; DWBA; Bandwidth assignment; DBA;

    机译：TWDM PON;能源效率;循环睡眠模式;DWBA;带宽分配;DBA.;

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