iGridMedia: The system to provide low delay peer-to-peer
live streaming service over internet
Peer-to-Peer Networking and Applications, 3 (3):
175-185 (2010)Abstract
Commercial peer-to-peer live streaming services
are getting popular nowadays, however, almost
all systems target non-interactive applications. Few systems
can address how to support interactive applications
(such as online auction, person interview, video
sharing & commenting, etc.) with peer-to-peer streaming
technology. In an interactive channel, all or part
of the participants can interact with the presenter or
publisher at the source. Unlike existing P2P streaming
service, there is different level of delay and synchronization
requirements in interactive applications,
meanwhile, the participant number in each channel
is relatively small but the concurrent channel number
is large. With such challenges, how much server
bandwidth can be saved in P2P streaming is an interesting
problem. We propose a very practical protocol
iGridMedia and fully implement it. The basic tradeoff
between consumed server bandwidth and the required
delay is carefully studied. Simulation and real-world
experiments show that our system consumes little
server bandwidth under low delay even if the peer
churn rate is very high and the peer bandwidth resource
index is very limited.