TFRC-Based Selective Retransmission for Multimedia Applications
Árpád Huszák, Sándor Imre · 2007
Multimedia applications are becoming increasingly popular in IP networks, while in mobile networks the limited bandwidth and the higher error rate arise in spite of its popularity. These are restraining factors for mobile clients using multimedia applications such as voice over IP (VoIP) or video streaming. In some conditions the retransmission of lost and corrupted packets should increase the quality of the multimedia service, but these retransmissions should be enabled only if the network is not in congested state. Otherwise the retransmitted packet will intensify the congestion and it will have negative effect on the audio/video quality. Our proposed mechanism selectively retransmits the corrupted packets based on the TCP-Friendly Rate Control (TFRC) and the actual video bit rate.