Uplink call admission control with adaptive bit rate degradation for WCDMA

摘要

In this paper, we propose an uplink call admission control (CAC) scheme for WCDMA. The proposed scheme employs two-stage bit rate degradation strategies to reduce the total number of interference in order to increase the achievable SIR of the to-be-admit call especially in congested situation. The proposed scheme has shown improvement in the QoS performance by reducing the percentage of blocked calls and the percentage of dropped calls.