北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (3): 50-53.doi: 10.13190/jbupt.200803.50.282

• 论文 • 上一篇    下一篇

EPON系统DBA门限策略的数学建模与分析

裘紫清1, 陈 雪1 , 刘 冬2   

  1. 1.北京邮电大学 光通信与光波技术教育部重点实验室,北京 100876;2.北京格林威尔科技发展有限公司,北京100085
  • 收稿日期:2007-08-28 修回日期:1900-01-01 出版日期:2008-06-28 发布日期:2008-06-28
  • 通讯作者: 裘紫清

Modeling and Analyzing of Threshold Scheme in Dynamic Bandwidth Allocation over EPON

QIU Zi-qing1, CHEN Xue1, LIU Dong2   

  1. 1.Key Laboratory of Optical Communication and Lightwave Technologies Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876,China;
    2.Beijing GW Technologies Company, Limited , Beijing 100876 ,China)
  • Received:2007-08-28 Revised:1900-01-01 Online:2008-06-28 Published:2008-06-28
  • Contact: QIU Zi-qing

摘要:

研究了以太无源光网络(EPON)系统服务门限的选取策略,提出了一种扩展的单服务台多终端站轮询模型(EL-CSMQ). 该模型首先在输入侧建立符合自相似特性的批到达流量模型,随后采用两级缓存的建模方法,分析了EPON系统动态带宽分配(DBA)的门限大小对系统稳定性、平均时延和时延抖动的影响. 仿真验证了理论分析结论.

关键词: 单服务台多终端, 限定门限, 动态带宽分配

Abstract:

A mathematic model based on cyclic-server multi-queue (CSMQ) is proposed to analyze how the threshold puts influences on the system stability, the mean waiting time and the delay variance of dynamic bandwidth allocation algorithms without no head of line (HOL) blockings over Ether passive optical network (EPON). The proposed model consists of self-similar traffic model and two-buffer model. Simulation results verifies all the conclusions.

Key words: cyclic-server multi-queue, exhaustive-limited, dynamic bandwidth allocation

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