Dynamic interference and timeout-based CAC scheme for multimedia cellular networks

In this paper, an adaptive QoS oriented CAC function is proposed to meet the rapidly increasing demand for providing multimedia services with diversified quality requirements. It decides whether the connection request is to be admitted into the system based on the interference level and the waiting time before access. This CAC scheme, based on service class differentiation aims at maximizing the use of available radio resource and meeting the QoS requirement of higher priority users as much as possible while maintaining the minimum requirements of lower priority users, especially when the system suffers from congestion. The new CAC policy achieves a good performance and capacity gain.