P2P Scheme for the Media Stream Multicast Based on Density Tree
YU Sheng-sheng · Journal of Chinese Computer Systems · 2006
Currently IP multicast copies and transmits data in router so that it cannot meet the demand for its disadvantages, and it is a trend that multicast is realized through route selection at end hosts. This paper has proposed a new model of application level multicast named DHCM (Density-based Hierarchical Clustering Multicast)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. 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.