| 大延时网络中的主动队列管理机制 |
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| 引用本文： | 刘明,窦文华,张鹤颖.大延时网络中的主动队列管理机制[J].国防科技大学学报,2006,28(5):47-51. |
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| 作者姓名： | 刘明 窦文华 张鹤颖 |
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| 作者单位： | 国防科技大学,计算机学院,湖南,长沙,410073 |
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| 基金项目： | 国家自然科学基金资助项目(90104001) |
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| 摘 要： | 研究了网络延时对路由器主动队列管理机制的影响,分析了几种典型主动队列管理算法在大延时网络中的性能。在介绍了基于内模补偿的DC-AQM算法的优缺点之后,根据PID控制器延时补偿的Ziegler-Nichols设定方法,提出了ZNDC(Ziegler-Nichols delay compensation)AQM算法并进行了仿真实验验证,实验结果表明算法达到了预期的目标。
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| 关 键 词： | 拥塞控制 主动队列管理 控制理论 |
| 文章编号： | 1001-2486(2006)05-0047-05 |
| 收稿时间： | 8/1/2006 12:00:00 AM |
| 修稿时间： | 2006年8月1日 |
AQM Algorithms in Large-delay Networks |
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| LIU Ming,DOU Wenhua and ZHANG Heying.AQM Algorithms in Large-delay Networks[J].Journal of National University of Defense Technology,2006,28(5):47-51. |
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| Authors: | LIU Ming DOU Wenhua and ZHANG Heying |
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| Institution: | College of Computer, National Univ. of Defense Technology, Changsha 410073, China;College of Computer, National Univ. of Defense Technology, Changsha 410073, China;College of Computer, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The study was made to research into the effect of the network delay upon the AQM mechanism and to analyze the properties of several typical AQM algorithms in delay networks,which was put forward recently.With a discussion of the advantage and disadvantage of the DC-AQM,this paper,according to the Ziegler-Nichols approach,in which PID controller may compensate for the time delay,proposed an AQM algorithm using Ziegler-Nichols Method that can reduce the negative impact caused by the large delay.Finally,the performance of AQM with Ziegler-Nichols Delay Compensation is evaluated through NS simulations.Results from the simulation reached the objective expected. |
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| Keywords: | congestion control AQM(active queue management) control theory |
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