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计算机工程 ›› 2008, Vol. 34 ›› Issue (10): 123-125. doi: 10.3969/j.issn.1000-3428.2008.10.044

• 网络与通信 • 上一篇    下一篇

以太网无源光网络中的QoS研究

张桂英1,2,吴学智3   

  1. (1. 解放军理工大学通信工程学院,南京 210007;2. 海军指挥学院,南京 210016;3. 海军工程大学,武汉 430033)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-05-20 发布日期:2008-05-20

Research of QoS in Ethernet Passive Optical Networks

ZHANG Gui-ying1,2, WU Xue-zhi3   

  1. (1. Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007; 2. Institute of Navy Command, Nanjing 210016; 3. University of Navy Engineering, Wuhan 430033)

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-05-20 Published:2008-05-20

摘要: 在分析以太网无源光网络系统MAC协议的基础上,研究基于QoS的动态带宽分配机制,提出一种新的支持业务的QoS的动态带宽分配算法。该算法采用限制性带宽分配方法和基于优先级的调度方式,基于业务的通信量特征对各类业务预分配传输带宽。仿真结果表明该算法在时延和吞吐量性能上优于现有算法。

关键词: 以太网无源光网络, 服务质量, 动态带宽分配

Abstract: This paper addresses dynamic time slot assign mechanism. By analyzing MAC protocol in Ethernet Passive Optical Network(EPON), it proposes a new Dynamic Bandwidth Allocation(DBA) algorithm for supporting QoS. The algorithm adopts limited bandwidth allocation, priority-based scheduling and allocates bandwidth in advance for various types of traffic. Simulation demonstrates that the algorithm enhances QoS metrics such as average delay and throughputs over other protocols.

Key words: Ethernet Passive Optical Network(EPON), Quality of Service(QoS), Dynamic Bandwidth Allocation(DBA)

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