Reuse partitioning in cellular networks with dynamic channel allocation

Great interest in recent years has been devoted to mobile communications. T he research effort has been directed to increasing the capacity of radio sy stems by applying space reuse techniques. Higher efficiency in the usage of the available frequency spectrum can be obtained either by reducing the ce ll size, thus requiring the provision of new base stations, or by reusing t he available spectrum more efficiently without cell size reduction. In this paper we present a dynamic frequency allocation algorithm for cellular net works that exploits a given reuse pattern. The performance of the proposed scheme, in terms of blocking probability, is evaluated by means of computer simulations both when the position of the mobiles remains unchanged and wh en mobility is taken into account, under both uniform and hot-spot traffic. The numerical results show that the capacity of the proposed scheme is sen sibly higher than that of a dynamic channel allocation without reuse partit ioning. The effects of both user mobility and reuse partitioning on the sig nalling load are also considered.