Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (10): 1388-1393.DOI: 10.12068/j.issn.1005-3026.2020.10.004

• Information & Control • Previous Articles     Next Articles

H Congestion Tracking Control for TCP/AWM Network Systems

JING Yuan-wei, QI Xue-lei, SHEN Jin-dong, JING Jiang-shan   

  1. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2019-01-29 Revised:2019-01-29 Online:2020-10-15 Published:2020-10-20
  • Contact: JING Yuan-wei
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Abstract: For the TCP/AWM network system congestion tracking control problem, a congestion control strategy design idea based on AWM mechanism was proposed. For the nonlinear model of the network system, the coordinate transformation was used to transform it into an error model with a lower triangle form. An H controller was designed using backstepping technology. Considering the interference situation of UDP flow in the system, an H performance function was designed to inhibit the interference effect. A sufficient condition was obtained for the stability of the error system by combining the backstepping technology with the H performance function. The simulation results showed that the proposed control method can quickly stabilize the queue length, and is still effective when the UDP stream occupies nearly half of the link bandwidth.

Key words: TCP/AWM networks, congestion control, active window management, lower triangle form, H control

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