[1]蔡小玲* *,汪小帆,王执铨,等.主动队列管理中PI控制的分析与改进[J].南京理工大学学报(自然科学版),2005,(03):368-370.
 CAI Xiao-ling,WANG Xiao-fan,WANG Zhi-quan,et al.Analysis and Improvement of PI Controll for Active Queue Management[J].Journal of Nanjing University of Science and Technology,2005,(03):368-370.
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主动队列管理中PI控制的分析与改进
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2005年03期
页码:
368-370
栏目:
出版日期:
2005-08-30

文章信息/Info

Title:
Analysis and Improvement of PI Controll for Active Queue Management
作者:
蔡小玲1* * 汪小帆2 王执铨1 孙金生1
1. 南京理工大学自动化系, 江苏南京210094;
2. 上海交通大学自动化系, 上海200030
Author(s):
CAI Xiao-ling1 WANG Xiao-fan2 WANG Zhi-quan1 SUN Jing-sheng1
1. Department of Automation, NUST, Nanjing 210094, China; 2. Department of Automation, Shanghai Jiao Tong University, Shanghai 200030, China
关键词:
主动队列管理 随机提前检测 比例积分控制
Keywords:
active queuemanagement random early de tect ion proportiona-l integra l control
分类号:
TP393
摘要:
主动队列管理是一个控制过程,它由核心路由器通知TCP源端管理时延并对队列加以利用,是一个反馈控制问题。该文在TCP拥塞控制动态模型的基础上,分析了随机提前检测(RED)机制和其队列平均的不利性,提出可采用PI控制进行队列管理。对PI控制,可将丢弃数据包的概率从几何随机数改进为标准随机数,经网络仿真器仿真,结果表明,验证了该文提出的这一改进效果。
Abstract:
A ctive queue management ( AQM ) is a process o f signa ling TCP( transm ission control protoco l) sources from core routers w ith the ob jective ofmanag ing queue ut ilization and delay. It is essentia lly a feedback contro l prob lem. Based on the dynam icmodel ofTCP. s congestion-avoidancemode, this paper analyzes themechanism o f the random early detection ( RED) and the d isadvantage of its queue-averag ing. It recommends the classical proportiona-l integral( PI) contro.l Based on the analysis o f the PI contro, l the un iform random variab le is substitu ted for the geome tric random variable on the packet drop probab ility. The results from the netw ork simu lator simu lations demonstrate the impact o f the improvement.

参考文献/References:

[ 1] Athura liya S, L i V H, Low S H , et a ,l REM: Ac tive queue m anag em ent[ J]. IEEE N etwork, 2001, 15 ( 3): 48- 53.
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[ 5] M isra V, GongW B, Tow sleyD. Flu id-based ana lysis of a network o f AQM rou ters supporting TCP flows w ith an app lication to RED [ J]. Com pute r Communication Rev iew, 2000, 30( 4): 151- 160.
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[ 7] H o llot C, M isra V, Tow sley D , et a.l A contro l theoretic ana ly sis of RED[ J] . Proceed ing s- IEEE In fo com, 2001, 3: 1 510- 1 519.
[ 8] Ho llot C V, M israV, Towsley D, et a.l Ana lysis and design o f contro llers for AQM routers supporting TCP flow s[ J]. IEEE T ransactions on Autom atic Contro ,l 2002, 47( 6): 945 - 959.

备注/Memo

备注/Memo:
基金项目: 高等学校博士点专项科研基金( 20020288052), 江苏省自然科学基金( BK2004132) 。
 作者简介: 蔡小玲( 1977- ) , 女, 江苏常州人, 博士生, 主要研究方向: 控制理念与控制工程, E-m a il: cx lhe lo@ sohu. com。
更新日期/Last Update: 2013-03-03