Teletraffic modeling and performance evaluation of multilayer cell architecture

Multilayer cell architecture, sometimes referred as a hierarchical cell structure, represents one of the most efficient approaches to meet varying coverage, capacity and bandwidth demands in mobile cellular systems. However the performance of such systems can be influenced by several factors. One of challenges in designing such a system is adapting an efficient overflow policy and the provision of uniform GoS between the layers. In this paper we have thoroughly investigated and analysed the performance of a two-layer cell architecture system with different overflow and channel take-back policies. The study is based on a comprehensive event driven simulation model