A Scene-based Bandwidth Allocation with Two-Phase Scheme for VBR Video

Abstract

Dynamic bandwidth allocation for VBR video is a critical issue in bandwidth management. While keeping high bandwidth utilization, low complexity and longer effective allocation time are new challenges in future heterogeneous environments due to the mobility of wireless networks. In this paper, a scene-base bandwidth allocation with two-phase scheme (SBATP) is proposed. Desired bandwidth is allocated based on the observation of scenes to lower complexity. With two-phase scheme, SBATP can obtain long effective allocation time and provide high utilization at the same time to facilitate bandwidth management. The performance is evaluated using simulation with actual MPEG-4 video traces. Simulation results also present the robustness of parameter selection and relative tradeoff of the proposed scheme.