SURVEY OF ERROR RECOVERY TECHNIQUES FOR IP-BASED AUDIOVISUAL MULTICAST APPLICATIONS

IP-based audio-visual multicast applications are gaining increasing in terest since they can be realized using inexpensive network services t hat offer no guarantees for loss or delay. When using network services that do not guarantee the quality of service (QoS) required by audio- visual applications, recovery from losses due to congestion in the net work is a key problem that must be solved. This survey gives an overvi ew of existing transport-layer error control mechanisms and discusses their suitability for use in IP-based networks. Additionally, the impa ct of IP over ATM on the requirements of error control mechanisms is d iscussed. Different network scenarios are used to assess the performan ce of retransmission-based error correction and forward error correcti on.