Title :
Better audio performance when video stream is monitored by TCP congestion control
Author :
Latecki, Longin Jan ; Kulkarni, Kishore ; Mulik, Jaiwant
Author_Institution :
Dept. of Comput. & Inf. Sci., Temple Univ., Philadelphia, PA, USA
Abstract :
Conventional wisdom holds that the TCP like congestion control is unsuitable for real-time multimedia conferencing. However, our results clearly show that an audio and video conferencing system that transmits video over TCP (and audio over RTP/UDP) can provide significantly better audio quality to the end user than one built on RTP/UDP alone. We measured audio quality in terms of packet loss, packets arriving too late (for real time play out), average packet delay, and jitter. Our results also clearly indicate that sending video over TCP does not introduce any additional delay in the arrival time of video packets in comparison to RTP/UDP.
Keywords :
Internet; audio signal processing; jitter; multimedia communication; telecommunication congestion control; teleconferencing; video signal processing; Internet; TCP congestion control; audio conferencing system; audio quality; jitter; packet delay; packet loss; real-time multimedia conferencing; transport control protocol; video conferencing system; video stream; Added delay; Bandwidth; Computerized monitoring; Delay effects; Jitter; Loss measurement; Propagation losses; Protocols; Streaming media; Videoconference;
Conference_Titel :
Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on
Print_ISBN :
0-7803-7965-9
DOI :
10.1109/ICME.2003.1221618
