The Erlang Multirate Loss Model
Michael D. Logothetis, Ioannis D. Moscholios · 2019
This chapter starts with random arriving calls of fixed bandwidth requirements and fixed bandwidth allocation during service. Before the study of multirate teletraffic loss models where multiple service-classes of different bandwidth per call requirements are accommodated in a service system, the chapter presents the simpler case where all calls belong to just one service-class, and considers the multi-service system. When aiming at QoS equalization among service-classes, the recursive CBP calculation of the Erlang multirate loss model under the BR policy according to the Roberts method can be improved by the following method proposed by Stasiak and Glabowski. According to ITU-T, a fixed routing network is a network in which a route providing a connection between an originating node and a destination node is fixed for every service-class (or for every traffic flow of the same service-class). The chapter also considers that a fixed routing network consists of L links.