|Table of Contents|

Analysis and Improvement of PI Controll for Active Queue Management

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2005年03期
Page:
368-370
Research Field:
Publishing date:

Info

Title:
Analysis and Improvement of PI Controll for Active Queue Management
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
Keywords:
active queuemanagement random early de tect ion proportiona-l integra l control
PACS:
TP393
DOI:
-
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.

References:

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Last Update: 2013-03-03