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Up: P2Cast: Peer-to-peer Patching Scheme
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In P2Cast, the departure of a client
can disrupt both the delivery of
a patch stream and the transmission of the base
stream over the base tree.
The ability to provide continuous playback in the face of these
disruptions is essential to the success of P2Cast.
In the following, we examine this issue from the following two aspects: (1) the
disruption effect on the continuous playback of the patch stream; and (2)
the disruption effect on continuous playback of the base stream.
We find that the patch stream is
relatively immune to the disruption because of its short duration.
For the base stream, we proposed the shifted forwarding technique to conceal
Finally, the threshold in P2Cast serves as a knob that can adjust the
balance between the scalability and the clients' viewing quality.
Failure Recovery - Providing continuous playback