A call admission control scheme for multi-rate traffic based on total received power

In this paper, CAC (Call Admission Control) algorithms where decisions are based on total received power for the reverse link in CDMA systems with mul tiple types of services are proposed. The proposed CAC schemes have advanta ges in that they have control over the cell load dynamically and guarantee the required SIR, that is, QoS (quality of service). The optimal ratio of r equired transmission power that achieves the maximum capacity is derived fo r evaluating the cell load and SIR (signal to interference ratio) reflected in total received power at base stations. Allocation of different threshol ds can be made for different services which can be regarded as priority bas ed schemes. Two types of services, voice and data, are considered and the m aximum throughput is obtained when threshold values are the same. In additi on, the transmitter removal scheme is adopted that eliminates calls when th e system does not meet the required SIR. Simulation results are provided to evaluate the performance.