Call admission: dimensioning a single VBR video source using transition probability matrix

This paper describes a novel and simple comparison method for variable bit rate (VBR) video sources according to their average excess rate/frame. We present the parameter average excess rate/frame (α) as an alternative to the traditional parameters used in call admission, e.g. long term rate, variance, peak rate. We propose a way of calculating α through the use of transition probability matrices (TPM) of VBR sources, specifically using their holding times and asymptotic mean occupancies. A useful property of the proposed algorithm is that it allows comparisons between TPMs of different sizes and VBR video sequences of different durations. This algorithm can serve as an aid in call admission for bandwidth allocation purposes