TITLE

CONGESTION CONTROL IN MULTI-SOURCE CONNECTION-ORIENTED NETWORKS WITH APERIODIC FEEDBACK

AUTHOR(S)
IGNACIUK, PRZEMYSŁAW; BARTOSZEWICZ, ANDRZEJ
PUB. DATE
March 2008
SOURCE
Systems Science;2008, Vol. 34 Issue 1, p59
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this paper, the congestion control problem in a multi-source connection-oriented network is addressed. The network considered employs control units, generated by each source once every M data packets, to deliver feedback information used to regulate the transfer speed of the sources. Since the sources adjust the transmission rate only upon 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 no data loss and full bottleneck link bandwidth utilization are presented and strictly proved with explicit consideration of the aperiodic feedback information availability. Moreover. since the controller saturation limits are fully adjustable, the algorithm performance may be easily tuned according to the existing system resources. Special attention is given to the analysis of the algorithm robustness with respect to imprecise delay time estimation, and it is shown that all of the favorable properties of the proposed scheme are preserved, even though the propagation delays are estimated by the controller with decreased accuracy.
ACCESSION #
43663302

 

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