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