Loss Networks

A loss network model with overflow for capacity planning of a neonatal unit

“…The model is developed for the neonatal unit at University College London Hospital (UCLH), the perinatal centre of the North Central London Perinatal Network 3 (NCLPN) and one of the busiest perinatal centres across the country. The proposed model is an overflow loss network model inspired from telecommunications systems (e.g., Kelly, 1991;van Dijk, 1993). Call blocking is a key performance measure in telecommunication networks (Abdalla and Boucherie, 2002).…”

Modelling and Performance Measure of a Perinatal Network Centre in the United Kingdom

“…However, for most practical networks, direct calculation of the normalization constant is difficult, because it requires summing over all the states in Ω. Several approximate techniques were proposed to compute the normalization constant and the blocking probabilities such as reduced load approximation (RLA) [7][4] and Monte Carlo method [13].…”

Uplink blocking probability for a cell with WCDMA radio interface and differently loaded neighbouring cells

“…8 and 9). To determine the value a zh,j influencing the class j calls and the cell h by the access cell z, we used the Fixed Point Methodology [6] (cf. [8,11]).…”

“…According to the method, a given call can be offered such a traffic, which is not blocked in the neighbouring cells. This phenomenon leads to a decrease in the value of real traffic offered to a given cell and is called the thinning effect [6].…”

“…The method is based on the model of multi-service switching node carrying a mixture of different multirate traffic streams, including multicast traffic streams. In the proposed model, a fixed point methodology has been used [6].…”