A p2p scheme for live media stream multicast

This paper has proposed DHCM (density-based hierarchical clustering multicast), a scalable application-level multicast model which has improved IHC arithmetic. DHCM divides the hosts into many hierarchies according to their density, and constructs a density tree to realize the shortest routing for single-source media streaming. The tree delivers the content of video server to each host in density tree and uses a p2p scheme in data transmission. By this way the application-level multicast has been realized. This density tree has the homogeneity and monotonic properties. The experiment result has proved that DHCM can transmit the video stream efficiently and robustly.