Modeling and Simulation of Multicast IPTV and VoD Streams for a Multiservice IP Network

Abstract

This thesis work concerns the modelling and simulation of IPTV and VoD streams in an IP/MPLS network. Video traffic and their protocols are studied. We started from the M/G/∞ model which allowed us to have images (I, B and P). These are the images that were used during the modeling process. Indeed, this model allows to characterize a video sequence by the following parameters: Slot or time to generate a packet; image level or GOP. Image size or GOP distribution: Mixing distribution. Type of correlation: Markov, short-term dependence or long-term dependence. The protocols involved are: MPEG-TS; UDP; RTP; RTSP; IP; IGMPv2; MPLS. In order to find a packet output model, we created a “modeler” in a python environment to estimate multicast and VoD traffic. We have created four (4) functions to materialize this modeling: “Packer”, TS, Sequencer and Transport. The results collected allowed us to determine the law and mathematical model of packet output. And it is the M/M/∞ model that models a video source. We used the RStudio software for this purpose. All these theoretical results could be compared during the simulation of the IPTV and VoD servers.