33
V. Liberatore
Pervasive Computing
Real-Time Transport
*RTP-RTCP
nRTP is a data transfer protocol
nRTCP is a companion control protocol
*Problems above solved
*Support for
nFeedback on connection quality
nTiming, synchronization
nEnd-point description, aggregation
nFrame boundaries
*Flexibility
nApplication-level framing
nCustom-tailored reaction to congestion, packet losses, but
nNo error detection, recovery
nIndependent of underlying transport
*Can work over TCP
*Small header
*Multicast support