Policing method for Markovian traffic descriptors of VBR MPEG sources overATM networks

An efficient policing mechanism for Markov model-based traffic descriptors of VBR MPEG video traffic is proposed. A VBR video sequence is described by a set of traffic descriptors using a scene-based Markov model for effectiv e resource allocation and accurate QoS prediction. To monitor the input tra ffic from the source, the authors have defined a set of a limited number of representative monitoring parameters and also defined an exponential bound ing function in order to accommodate dynamic behaviour. The simulation resu lts show that the proposed policing mechanism for Markovian traffic descrip tors monitors sophisticated traffic, such as MPEG video, effectively and al so protects network resources from both malicious and abnormally behaved tr affic.