Stochastic modeling of traffic processes

Modern telecommunications networks are being designed to accommodate a heterogeneous mix of traffic classes ranging from traditional telephone calls to video and data service. Thus, traffic models are of crucial importance to the engineering and performance analysis of telecommunications systems, notably congestion and overload controls and capacity estimation. This paper surveys teletraffic models, addressing both theoretical and computational aspects. It first surveys the main classes of teletraffic models commonly used, and then proceeds to survey teletraffic methods for computing statistics relevant to the engineering of a teletraffic network.