|Table of Contents|

Nonlinear AQM Algorithm Based on Backstepping Technique

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

Issue:
2010年03期
Page:
283-288
Research Field:
Publishing date:

Info

Title:
Nonlinear AQM Algorithm Based on Backstepping Technique
Author(s):
YANG Xin-haoWANG Zhi-quan
School of Automation,NUST,Nanjing 210094,China
Keywords:
network congestion control active queue management backstepping technique nonlinear control
PACS:
TP393.07
DOI:
-
Abstract:
A nonlinear active queue management(AQM) algorithm is presented for network congestion.The packet drop ratio is designed for ensuring both the most transmission rate and the least queue length.The nonlinear output feedback controll algorithm is obtained based on comparison lemma and backstepping technique,and the value range of parameters is also proposed.Considering the functional relationship between round trip time(RTT) and queue length,a nonlinear network model based on variable RTT is designed.A novel TCP window size observer is proposed.The observer error converges to zero asymptotically when the packet drop ratio falls between 0 and 1.Simulation results indicate the proposed nonlinear active queue management-backstepping technique has high robust stabilization under diverse network conditions,the link utilization is 95.41%and the packet loss ratio is 0.287%.

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Last Update: 2010-06-30