Multicast loss recovery with active injection

It is well known that request suppression, local recovery and retransmission scoping are the three crucial elements for scalability and efficiency in multicast loss recovery. None of existing multicast loss recovery schemes can simultaneously have good performance in all the three aspects without introducing significant overhead. The scheme proposed in this paper approaches the multicast loss recovery issue from a new perspective and achieves good performance in all the three aspects with very limited overhead. Our analysis shows that the proposed scheme has a significantly better overall performance as compared to existing schemes.