Dynamic channel allocation scheme supporting multiple services in cellular systems

Abstract

Due to the limited spectrum in wireless communication cellular systems, channel allocation scheme is a very important issue to achieve high system capacity. In this paper, we present an efficient algorithm using the idea of channel partitioning (CP) to support two types of services requiring different reuse factors. CP is based on the fact that different service requires different SIR and thus can use different reuse factor. A higher SIR required service might use a larger reuse factor while a lower SIR required service might use a smaller reuse factor. We apply this CP algorithm to a previous proposed DCA scheme, DCA-WI. Our newly proposed dynamic channel partitioning with interference information (DCP-WI) tries to manage the channel allocation in a proper way between cells so that each allocation of the channel causes least interference to the neighboring cells. The simulation results show that DCP-WI outperforms FCA and DCA-WI under both uniform and nonuniform traffic distributions.