Dynamic rate control methods for continuous media transmission

On continuous media transmission using compression techniques, a variable bit rate transmission method is required to maintain the video frame rate at a constant. At the same time, user's Quality of Service must be guaranteed even if packet loss and delay occur by CPU loads on the client or server, and network traffic increase. In this paper, two variable bit rate transmission methods are described when MPEG compressed video are used. We also introduce both a packet rate control method to reduce the packet loss, and frame rate control method to maintain the frame rate constant under dynamic load conditions. We implemented a prototyped Packet Audio/Video System (PAVS) to evaluate performance of these rate control functions. Through the performance evaluation our PAVS performance has demonstrated the usefulness of our suggested control methods.