Reuse partitioning in cellular networks with dynamic channel allocation

Great interest, in recent years, has been devoted to mobile communications. The research effort is directed to increasing the capacity of radio systems by applying space reuse techniques. Higher efficiency in the usage of the available frequency spectrum can be obtained either by reducing the cell size, thus requiring the provision of new base stations, or by reusing the available spectrum more efficiently without cell size reduction. In this paper we present a scheme that allows a smooth increase of the capacity of a cellular system for circuit-switching by applying cell-partitioning and by using dynamic channel allocation techniques. The performance of the proposed scheme, in terms of blocking probability, is evaluated both when the position of the mobiles remains unchanged and when mobility is taken into account, both in case of uniform and of hot-spot traffic. The numerical results show that the capacity of the proposed scheme is sensibly higher than that of a fixed allocation scheme.