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

Volume

2

fYear

2003

fDate

6-9 July 2003

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on

Print_ISBN

0-7803-7965-9

Type

conf

DOI

10.1109/ICME.2003.1221618

Filename

1221618