000098483 001__ 98483
000098483 005__ 20190316233907.0
000098483 037__ $$aARTICLE 000098483 245__$$aPacket Media Streaming with Imprecise Rate Estimation
000098483 269__ $$a2007 000098483 260__$$c2007
000098483 336__ $$aJournal Articles 000098483 520__$$aWe address the problem of delay-constrained streaming of multimedia packets over dynamic bandwidth channels. Efficient streaming solutions generally rely on the knowledge of the channel bandwidth, in order to select the media packets to be transmitted, according to their sending time. However, the streaming server usually cannot have a perfect knowledge of the channel bandwidth, and important packets may be lost due to late arrival, if the scheduling is based on an over-estimated bandwidth. Robust media streaming techniques should take into account the mismatch between the values of the actual channel bandwidth and its estimation at the server. We address this rate prediction mismatch by media scheduling with a conservative delay, which provides a safety margin for the packet delivery, even in the presence of unpredicted bandwidth variations. We formulate an optimization problem whose goal is to obtain the optimal value for the conservative delay to be used in the scheduling process, given the network model and the actual playback delay imposed by the client. We eventually propose a simple alternative to the computation of the scheduling delay, which is effective in real-time streaming scenarios. Our streaming method proves to be robust against channel prediction errors, and performs better than other robustness mechanisms based on frame reordering strategies.
000098483 6531_ $$alts4 000098483 6531_$$aconseervative playback delay
000098483 6531_ $$amedia scheduling 000098483 6531_$$arate estimation robustness
000098483 700__ $$0240751$$g152947$$aJurca, Dan 000098483 700__$$aFrossard, Pascal$$g101475$$0241061
000098483 773__ $$j2007$$tJournal on Advances in Multimedia, Hindawi Press$$k39524 000098483 8564_$$uhttps://infoscience.epfl.ch/record/98483/files/jam06.pdf$$zn/a$$s748664
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000098483 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL 000098483 980__$$aARTICLE