Joint connection-level and packet-level quality-ofservice support for VBR traffic in wireless multimedia networks

Abstract—In this paper, we investigate call admission con-trol (CAC) schemes that can jointly provide connection-level quality-of-service (QoS) (in terms of the new call blocking proba-bility and the handoff dropping probability) and packet-level QoS (in terms of the packet loss probability) for wireless multimedia networks. Stationary CAC schemes are proposed as the results of the solution to constrained optimization problems. A dynamic CAC scheme that can be adapted to varied and varying traffic con-ditions dynamically is also proposed. The proposed CAC schemes are computationally efficient and easy to implement, thus being suitable for real-time system deployment. Simulation results have demonstrated that the proposed dynamic CAC scheme achieves better performance when applied to realistic traffic conditions found in wireless multimedia networks. Index Terms—Call admission control (CAC), handoff dropping probability, new call blocking probability, packet loss probability, quality-of-service (QoS), wireless multimedia network. I