A coordinated location-based downlink scheduling scheme (CLDSS) in a cellular CDMA network with partitioned cells

The throughput of a CDMA system mainly depends on the signal-to-interference ratio (SIR). The techniques that can successfully manage the interference can improve the average rate of transmission. We propose a new scheduling scheme which coordinates the transmission between intercell mobile terminals (MTs) in a downlink CDMA system. In our scheme, we divide the cell into two flexible concentric areas based on the traffic load in the cell. The base stations (BSs) allocate the transmission power based on the distance between MTs and BSs. When one BS transmits data to an MT which is located in the inner area with less power, the neighboring BS transmits data to an MT located in the outer area with more power and vice versa. The proposed coordinated scheduling can increase the capacity of the system as well as save energy by controlling the power. Our analysis shows that it improves the performance of the MT which is located near a cell edge. Numerical results are presented to show the superiority of the proposed scheme.