Congestion control of video streaming over the Internet is necessary, as access to these
telecommunications networks is unregulated. A commercial IPTV service in this environment faces
unacceptable quality degradation, if the video stream does not respond to the presence of other
competing traffic flows. As a solution, fuzzy logic control offers real-time performance, comparatively
simple models, fairness to other traffic, and a smooth response. This Chapter introduces the control
problem faced in designing a fuzzy logic congestion controller in terms of the restrictions of a
compressed video bitstream and the uncertainties that affect congestion control. The Chapter outlines
the design of a congestion controller that relies on network packet delay and delay trend as inputs. The
controller has been extensively tested and favorably compared to the standard congestion controller.
Multimedia applications over telecommunications networks are a promising area to apply
computational intelligence.
Keywords: Congestion control, fuzzy logic, internet video straming.
