Two-degree-of-freedom congestion control strategy against time delay and disturbance

Hao Wang, Wei Wei, Yanhua Li, Chenda Liao, Yan Qiao, Zuohua Tian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • 13 Citations

Abstract

Most of the existing congestion control schemes cannot guarantee the quality of service in wide-area networks with large round trip time (RTT). Aiming at the above problem, a two-degree-of-freedom congestion control strategy (named TCC) is proposed for improving the stability and robustness of the TCP/AQM system. TCC employs a modified Smith predictor with two additional controllers to compensate for the RTT delay. The feedback controller is designed by the internal model control theory for fast set-point tracking. The disturbance rejection controller is derived from frequency-domain analysis to reject external disturbance. Simulation results in NS2 demonstrate that TCC can effectively overcome the negative influence cased by time delay and disturbance. Compared with other congestion control schemes, our proposed method is superior in stabilizing the queue length with small jitters and rejecting disturbances.

LanguageEnglish (US)
Title of host publication2010 IEEE Global Telecommunications Conference, GLOBECOM 2010
DOIs
StatePublished - Dec 1 2010
Event53rd IEEE Global Communications Conference, GLOBECOM 2010 - Miami, FL, United States
Duration: Dec 6 2010Dec 10 2010

Other

Other53rd IEEE Global Communications Conference, GLOBECOM 2010
CountryUnited States
CityMiami, FL
Period12/6/1012/10/10

Fingerprint

Time delay
Controllers
Frequency domain analysis
Wide area networks
Disturbance rejection
Jitter
Control theory
Quality of service
Feedback

Keywords

  • Active queue management
  • Congestion control
  • Internal mode control
  • Smith predictor
  • Time delay
  • Two-degree-of-freedom

Cite this

Wang, H., Wei, W., Li, Y., Liao, C., Qiao, Y., & Tian, Z. (2010). Two-degree-of-freedom congestion control strategy against time delay and disturbance. In 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010 [5683122] DOI: 10.1109/GLOCOM.2010.5683122

Two-degree-of-freedom congestion control strategy against time delay and disturbance. / Wang, Hao; Wei, Wei; Li, Yanhua; Liao, Chenda; Qiao, Yan; Tian, Zuohua.

2010 IEEE Global Telecommunications Conference, GLOBECOM 2010. 2010. 5683122.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wang, H, Wei, W, Li, Y, Liao, C, Qiao, Y & Tian, Z 2010, Two-degree-of-freedom congestion control strategy against time delay and disturbance. in 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010., 5683122, 53rd IEEE Global Communications Conference, GLOBECOM 2010, Miami, FL, United States, 12/6/10. DOI: 10.1109/GLOCOM.2010.5683122
Wang H, Wei W, Li Y, Liao C, Qiao Y, Tian Z. Two-degree-of-freedom congestion control strategy against time delay and disturbance. In 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010. 2010. 5683122. Available from, DOI: 10.1109/GLOCOM.2010.5683122
Wang, Hao ; Wei, Wei ; Li, Yanhua ; Liao, Chenda ; Qiao, Yan ; Tian, Zuohua. / Two-degree-of-freedom congestion control strategy against time delay and disturbance. 2010 IEEE Global Telecommunications Conference, GLOBECOM 2010. 2010.
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