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计算机工程 ›› 2009, Vol. 35 ›› Issue (24): 130-132. doi: 10.3969/j.issn.1000-3428.2009.24.043

• 网络与通信 • 上一篇    下一篇

改进的自适应双时序算法的研究与仿真

殷爱菡,张培洲,焦曰里,黄昌胜   

  1. (华东交通大学信息工程学院,南昌 330013)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-12-20 发布日期:2009-12-20

Research and Simulation of Improved Adaptive Dual-clocking Algorithm

YIN Ai-han, ZHANG Pei-zhou, JIAO Yue-li, HUANG Chang-sheng   

  1. (School of Information Engineering, East China Jiaotong University, Nanchang 330013)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20

摘要: 提出一种自适应双时序算法,该算法能在不增加EF等高优先级业务时延的前提下,有效解决以太无源光网络中的轻负载恶化问题,降低AF, BE等业务的时延。该算法的时序可以根据实际情况改变,较好地改善了时隙浪费问题。用OPNET软件建立系统实用模型进行仿真,结果表明该算法可以降低平均网络时延,提高网络吞吐量。

关键词: 以太无源光网络, OPNET软件, 双时序算法

Abstract: This paper proposes an adaptive dual-clocking algorithm, which can effectively solve the problem of light-load deterioration in Ethernet Passive Optical Network(EPON) without increasing the delay of Expedited Forwarding(EF) service, and decrease the delay of Assured Forwarding (AF), Best Effort(BE) and other low-priority services. Its clocking can be changed according to actual situations and it improves the slot waste to a certain extent. A system working model with OPNET is established to realize simulation, the result indicates that the algorithm can decrease the average network delay and enhance the network turnover.

Key words: Ethernet Passive Optical Network(EPON), OPNET software, dual-clocking algorithm

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