计算机工程 ›› 2012, Vol. 38 ›› Issue (9): 83-85,92.doi: 10.3969/j.issn.1000-3428.2012.09.025

• 网络与通信 • 上一篇    下一篇

一种动态带宽分配策略及其性能分析

金顺福1,吕 倩1,王 朋1,李小良2   

  1. (1. 燕山大学信息科学与工程学院,河北 秦皇岛 066004;2. 开滦(集团)有限责任公司信息与控制中心,河北 唐山 063018)
  • 收稿日期:2011-06-30 出版日期:2012-05-05 发布日期:2012-05-05
  • 作者简介:金顺福(1966-),女,教授、博士生导师、CCF高级会员,主研方向:系统建模与仿真;吕 倩、王 朋,硕士研究 生;李小良,工程师
  • 基金项目:
    河北省自然科学基金资助项目(F2009000475)

Strategy of Dynamic Bandwidth Allocation and Its Performance Analysis

JIN Shun-fu   1, LV Qian   1, WANG Peng   1, LI Xiao-liang   2   

  1. Aiming at Quality of Service(QoS) requirements of different traffics in the current network, a dynamic bandwidth allocation strategy named E-DBA is proposed by taking into account both the traffic priority and system load. Geom/G/1 queuing model with multiple working vacations mechanism is established. By using the method of embedded Markov chain, the steady-state measures of the queueing model are derived. The performance measures in terms of the average response time and system utility of E-DBA are given. With experiments, the influence of the guaranteed bandwidth of class II traffic on the system performance is illustrated.
  • Received:2011-06-30 Online:2012-05-05 Published:2012-05-05

摘要: 针对当前网络中不同业务的服务质量需求,综合考虑业务优先级及业务负载,提出一种动态带宽分配策略——E-DBA。建立具有多重工作休假机制的Geom/G/1排队模型,使用嵌入式马尔可夫链导出排队模型的稳态指标。给出E-DBA的平均响应时间和信道利用率等系统性能指标表达式,并通过实验分析了第II类业务的保障带宽对系统性能的影响。

关键词: 动态带宽分配, 服务质量, 排队模型, 多重工作休假, 马尔可夫链

Abstract: Aiming at Quality of Service(QoS) requirements of different traffics in the current network, a dynamic bandwidth allocation strategy named E-DBA is proposed by taking into account both the traffic priority and system load. Geom/G/1 queuing model with multiple working vacations mechanism is established. By using the method of embedded Markov chain, the steady-state measures of the queueing model are derived. The performance measures in terms of the average response time and system utility of E-DBA are given. With experiments, the influence of the guaranteed bandwidth of class II traffic on the system performance is illustrated.

Key words: dynamic bandwidth allocation, Quality of Service(QoS), queuing model, multiple working vacation, Markov chains

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