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首页> 外文会议>2012 2nd International Conference on Communications and Information Technology >Analyzing the performance of centralized polling for long-reach passive optical networks
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Analyzing the performance of centralized polling for long-reach passive optical networks

机译：分析长距离无源光网络的集中轮询性能

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摘要

Long-Reach passive optical networks (LR-PONs) suffer from extremely long propagation delays that degrade the performance of centralized algorithms proposed for upstream bandwidth-allocation in traditional PONs. In this paper, we analyze the performance of two centralized dynamic bandwidth allocation algorithms; so called online interleaved polling and offline multi-thread polling, recently proposed in the literature for LR-PON. We investigate their performances in terms of packet pre-transmission delay. Simulation results show that although multi-thread polling succeeds in decreasing reporting and queuing delays, interleaved polling keeps a lower grant delay and therefore has better overall delay performance.
机译：长距离无源光网络（LR-PON）遭受极长的传播延迟，这会降低传统PON中针对上行带宽分配建议的集中式算法的性能。在本文中，我们分析了两种集中式动态带宽分配算法的性能；最近在文献中针对LR-PON提出了所谓的在线交错轮询和离线多线程轮询。我们根据数据包预传输延迟来研究其性能。仿真结果表明，尽管多线程轮询成功地减少了报告和排队延迟，但交错轮询保持较低的授权延迟，因此具有更好的总体延迟性能。

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