Uplink Call Admission Schemes for 3G and Beyond Mobiles Wireless Networks Supporting Heterogeneous Traffic

The wide-band code division multiple access (WCDMA) based 3G and beyond cellular mobile wireless networks are expected to provide a diverse range of multimedia services to mobile users with guaranteed quality of service (QoS). Soft capacity is one of the main characteristics of these networks and it necessitates new radio resource management strategies to serve diverse quality of service requirements. In this paper, resource sharing methods known as complete sharing (CS) based call admission controls and complete partitioning (CP) based call admission control are extended for operation in 3G WCDMA network. The extension includes devising call admission control with the deployment of buffering and threshold concepts. Two CS based call admission controls, referred to herein as queuing priority call admission control (QP-CAC) and hybrid priority call admission control (HP-CAC), and one CP based call admission control referred to herein as complete partitioning call admission control (CP-CAC) are presented. All proposed schemes support multiple admission priority classes based on request types (newly originating calls and handoff requests) and the traffic class (real-time and non real-time). CS based algorithms achieve the best system utilization at the expense of unfairness for the traffic classes with diverse QoS requirements while the CP-CAC ensure the fairness and service differentiation