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Rautiainen, M, Aska H, Ojala T, Hosio M, Makivirta A. & Haatainen N (2009)
Swarm synchronization for multi-recipient multimedia streaming
Proc. IEEE International Conference on Multimedia and Expo 2009 (ICME 2009), June 28 - July 3, New York, USA, 786-789.
IP networks allow constructing versatile device
configurations for multimedia streaming. However, the
stochastic nature of the packet-switched data transmission
may complicate IP-based implementations of some
conventional applications such as analog wired transmission
of synchronized multi-channel audio. This paper introduces
a multimedia streaming system based on the
synchronization of multiple playback clients as a ‘swarm’.
The proposed ‘swarm synchronization’ mechanism is based
on precise clock synchronization with the PTP protocol and
adjusting the client-specific sampling rates according to the
true playback rates of other clients. A streamlined version of
the RTP protocol is employed to minimize playout delay.
The proposed system is empirically evaluated in wired
Ethernet LAN and in wireless IEEE 802.11g LAN. The
experimental results show that in the Ethernet network the
proposed streaming system is able to achieve very precise
Full paper (PDF)