Private:psim

This page documents the development of a discrete event simulator for P2P video streaming applications. This simulator captures important features of data-driven video streaming systems. In particular, it is designed to evaluate: (i) the performance of various segment scheduling algorithms; (ii) the potential of network coding in multi-layer P2P video streaming systems.

Class Diagrams

class Frame {
    int no; // serial number
    int layer; // layer number it belongs to, set to zero for nonscalable frame
    double deadlineOffset; // deadline offset compared to the start of the video, in secs
    int size; // frame size in bytes
}

class Segment {
    int no; // serial number
    Vector<Frame> frames; // reference to included frame
    int totalSize; // aggregate size in bytes
}

class Video {
    String filename; // video trace file path and name
    Hashtable<int, Frame> frameTrace; // frames read from the trace file
    Hashtable<int, Segment> segmentTrace; // segments generated by the prepareSegments(...)
    void prepareSegments(int noFrame); // packetize frames into segment, 
        // noFrame indicates how many frames should we put in one segment; 
        // we might implement other packtization schemes later.
}