A Probabilistic Priority Adaptive Time-Threshold-based scheme for cellular multimedia networks

This paper proposes a dynamic Probabilistic Priority Adaptive Time-Threshold-based bandwidth allocation Scheme for Multimedia services (PPATTSM) in cellular networks. Because future data service will occupy a large portion of all services in next generation mobile networks and forced termination of an ongoing call is clearly less desirable than blocking of a new call attempt, there is much significance in improving non-prioritized handoff data call dropping probability of Adaptive Time-Threshold-based bandwidth allocation Scheme for Multimedia services (ATTSM) further. The proposed scheme modifies priority definition and bandwidth allocation of original ATTSM and then, designs a dynamic probabilistic priority policy for QoS guarantee of voice service. Simulation results show that the proposed scheme enormously improves performance of non-prioritized handoff data dropping probability at the cost of slightly increasing new voice call blocking probability that may tolerate uncritical while keeping high total bandwidth utilization compared with ATTSM.