Scalability Analysis of a Model for GSM Mobile Network Design

This work shows a scalability analysis of the mathematical model and computational tool to design a GSM (Global System for Mobile Communications) Network, in the point of view of BSC (Base Station Controllers) allocation and dimensioning. It optimizes the total transmission cost and BSC acquisition cost. It determines how much BSC are need, in what sites they has to be allocated, what model each one must have to support the total traffic demand without wasting money with their acquisition and what BTS (Base Transceiver Station) must be linked to what BSC for transmission cost reduction. Its core is a integer programming (IP) model as presented in Wolsey et al [8]. Other important contribution in this model is the fact that it addresses the new resources allocation technique of BSC switches that rises its capacity. The traditional way of resources allocation (processors, for instance) to the radio channels was deterministic and fixed. Thus, its capacity was given by total number of voice channels (4096, for instance). Nowadays, the BSC can handle a pool of resources that are allocated on-demand. The capacity rises and is given by its total traffic in Erlang.