Feedback picture sequence control for real-time MPEG video transfer through ATM networks

摘要

This paper proposes a new feedback picture sequence control (FPSC) for providing better QOS and more effective usage of network resource in ATM networks. The FPSC utilizes the feedback mechanism of the ABR service and the flexibility of MPEG video coding in order to resolve the collision of I-pictures at switches. The FPSC requires only a very little modification of usage of RM cell in the ABR service. We also describe the MPEG encoder which can change the number of pictures in a GOP. Simulation results show that the FPSC can improve the QOS such as the cell loss ratio and mean buffering delay in the cell buffer of the switch.