上海大学学报(自然科学版)

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EPON 动态带宽分配算法

沈丽,汪敏
  

  1. 上海大学 通信与信息工程学院,上海 200072
  • 收稿日期:2006-08-16 修回日期:1900-01-01 出版日期:2007-06-30 发布日期:2007-06-30
  • 通讯作者: 汪敏

Dynamic Bandwidth Distribution Scheme in EPON

SHEN Li, WANG Min
  

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2006-08-16 Revised:1900-01-01 Online:2007-06-30 Published:2007-06-30
  • Contact: WANG Min

摘要: 近几年,专家学者们对EPON(Ethernet Passive Optical Network)的带宽分配进行了大量的研究.基于EPON的系统结构和以往带宽 分配算法中的一些不足,提出了具有扩展性强、结合带宽预估计的EH-DBA算法.该算法利用分层分配,通过流量预测和带宽预分配机制以及预测修正机制,改善了业务的端到端延时和抖动性能.

关键词: DBA, EPON, 调度, 光纤到户(FTTH), 接入网

Abstract: In last few years, much research has been done on EPON bandwidth allocation. Bas ed on the special EPON system architecture and the weakness of some previous alg orithms, we propose a more expandable scheme that is associated with bandwidth e stimation. Simulation shows that the new technique can improve end-to-end delay and jitter performance.

Key words: DBA, EPON, FTTH, schedule, access network

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