Efficient Multirate Teletraffic Loss Models Beyond Erlang

5On–Off Multirate Loss Models

We consider ON–OFF multirate loss models of random arriving calls with fixed bandwidth requirements. Contrary to the models described in all previous chapters, in the ON–OFF loss models of this chapter in‐service calls do not constantly keep their assigned bandwidth but alternate between transmission periods (ON) and idle periods (OFF). The basic characteristics of these ON–OFF loss models are: (i) they can be used for the analysis of the call‐level behavior of bursty traffic (the ON–OFF model is a simple representation of bursty traffic) and (ii) their analysis is based on the classical EMLM (a fact that facilitates their computer implementation).

5.1 The ON–OFF Multirate Loss Model

5.1.1 The Service System

In the ON–OFF multirate loss model (ON–OFF), we consider a link of capacity b.u. that accommodates service‐classes of ON–OFF‐type calls. Each call of a service‐class follows a Poisson process with arrival rate , requires b.u., and competes for ...