A Selective Retransmission Protocol for Multimedia on the Internet
A Selective Retransmission Protocol for Multimedia on the Internet
Mike Piecuch, Ken French, George Oprica, and Mark Claypool
In Proceedings of SPIE International Symposium on
Multimedia Systems and Applications
(part of Photonics East - Information, Systems and Technology)
Boston, MA, USA
November 5-8, 2000
Internet multimedia applications have different requirements than do
traditional text-based applications, placing new demands on TCP and
UDP, the de-facto Internet transport protocols. We propose a
Selective Retransmission Protocol (SRP) to balance the potentially
high loss found in UDP with the potentially high latency found in
TCP. SRP uses an application-specific decision algorithm to determine
whether or not to ask for a retransmission for a lost packet,
adjusting the loss and latency to the optimum level for the
application. We develop and experimentally evaluate an
audioconference using SRP on a wide-area network testbed. We find SRP
outperforms both TCP and UDP in terms of multimedia application
quality.
- Conference paper: PDF (256 Kbytes)
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- Extended Abstract: PDF (9 Kbytes)