Reducing total call-blocking rates by flow admission control based on equality of heterogeneous traffic

Multimedia applications such as video and audio have recently come into wide use. Because this heterogeneous traffic occupies most networks, call admission control (CAC) is required to maintain high-quality service. User satisfaction depends on the CAC´s success in accommodating application flows. However, conventional CACs do not consider user satisfaction because their main purpose is to improve resource utilization. In this paper, we propose a novel CAC to maximize total accommodated flows based on a new philosophy that heterogeneous traffic is fair in networks. Theoretical analysis was used to derive optimal parameters for various traffic configurations. We also carried out numerical analyses to show the effectiveness of our proposed CAC.