Title :
A histogram-based model for video traffic behavior in an ATM multiplexer
Author :
Skelly, Paul ; Schwartz, Mischa ; Dixit, Sudhir
Author_Institution :
GTE Lab., Waltham, MA, USA
fDate :
8/1/1993 12:00:00 AM
Abstract :
The authors introduce a model based on arrival rate histograms for characterizing the behavior of an ATM buffer when it is carrying variable bit rate video traffic. Traffic smoothing on a frame-by-frame basis allows a quasistatic approximation that accurately predicts results such as buffer occupancy distributions and cell loss rates to be made. Convolving individual source histograms allow prediction of the queueing performance of a multiplexed stream. The approximation is investigated in more detail by modeling video as a Markov modulated Poisson process. It is shown that the multiplexer system is nearly completely decomposable (NCD). NCD systems have a well-known approximate solution, which is identical to the histogram approximation. Error bounds for the NCD approximation are also known and are reasonably tight. Results indicate that while the presence of strong correlations is an important characteristic of video traffic, the actual form of that correlation is not
Keywords :
asynchronous transfer mode; multiplexing equipment; telecommunication traffic; video signals; ATM buffer; Markov modulated Poisson process; approximate solution; arrival rate histograms; buffer occupancy distributions; cell loss rates; error bounds; histogram approximation; multiplexed stream; nearly completely decomposable systems; quasistatic approximation; queueing performance; source histograms; traffic smoothing; variable bit rate video traffic; Asynchronous transfer mode; Bandwidth; Bit rate; Communication system traffic control; Histograms; Multiplexing; Streaming media; Telecommunication traffic; Traffic control; Videoconference;
Journal_Title :
Networking, IEEE/ACM Transactions on