Congestion control protocol for connection oriented networks with aperiodic feedback and non-persistent sources
Przemysław Ignaciuk, Andrzej Bartoszewicz · Theoretical and Applied Informatics · 2007
In this paper the congestion control problem in a connection-oriented communication network is addressed. In the considered mutli-source network the feedback information is provided by means of control units generated by each source once every M data packets. Since the sources adjust the transmission rate only at the control unit arrival, the interval between successive rate modifications is input dependent and varies with time. A new, nonlinear strategy effectively combining the Smith principle with the proportional controller with saturation is proposed. Conditions for data loss elimination and full bottleneck link bandwidth utilization are formulated and strictly proved. The presented strategy allows for full resource usage even though the sources are not persistent. Moreover, since the controller saturation limits are fully adjustable, the algorithm performance may be easily tuned according to the existing system resources.