End-to-End Congestion Control via Optimal Bandwidth Allocation for Multimedia Streams

In this paper, an end-to-end congestion controlled optimal bandwidth allocation scheme with a transmission rate control mechanism for multimedia transmission is proposed. This rate control mechanism aims at minimizing the allocated rate and maximizing the utilization of the client buffer. By adjusting the transmission rate in response to the buffer occupancy and the playback requirements in the client, and variations in the network delay and packet loss rate, an acceptable quality-of-service (QoS) level can be maintained at the end systems. Simulation results show that our proposed scheme can generally achieve high network utilization and low losses, and no network support is needed. Index Terms – Congestion control, adaptive transmission, QoS, bandwidth allocation, network resource optimization.