Adaptation of MPEG video in ATM networks using forward loss/error recovery(FLER) scheme

This paper describes the adaptation of MPEG video in ATM networks using a f orward loss/error recovery (FLER) scheme to address the cell loss problem d ue to network congestion. An ATM adaptation layer (AAL) is proposed to faci litate the implementation of the FLER scheme using a two-dimensional error correctiont technique. Error control for a single segmentation and reassemb ly protocol data unit (SAR-PDU) is performed along the x-axis, while error control across a block of consecutive SAR-PDUs is performed along the gamma -axis. A new method using a real MPEG video sequence as the input source i s proposed to evaluate the performance with the FLER scheme under various n etwork conditions. On the other hand, subjective video quality evaluations have also been conducted. The results show that the FLER scheme is effectiv e in solving the cell loss problem and thus enhances the QoS for MPEG video transmission in ATM networks. (C) 2000 Academic Press.