Improved Rapid Acquisition of Multicast Sessions
This document describes two improvements to unicast based rapid acquisition of multicast RTP sessions (RAMS) described in [I- D.ietf-avt-rapid-acquisition-for-rtp]. One improved method allows a receiver to simultaneously request a unicast burst stream and join the multicast group, and then select one of the two streams to be first processed. Another method proposes to optionally convey a parameter called unicast backspace in the RAMS-I message. This parameter can be used by RR to determine when to join the primary multicast session.