Abstract: For wireless Channels are inherently lossy,it is challengeable to maintain the Qoality of Service(QoS) for live streaming. In this paper, we proposed a well-designed light weighted Negative-ACKnowledgment(NACK) Oriented Reliable Multicast Protocol, which combined the FEC-based repair in its design. This protocol can provide end-to-end rcliable transport of streams over generic IP multicast routing and forwarding services. For less complicated and more efficient implementation, feedback round mechanism is applied in HACK suppression. Experiment results show that our protocol gets much higher performance than NORM.

Key words: NACK,FEC,Feedback round, Wireless channel, Live streaming