Abstract:

In order to improve the stability and efficiency of Application Layer Multicast (ALM),based on the old timestampbased adaptive ALM overlay model with overlay structure detection,a new delay impact factor based ASD model,named ASDDIF,is proposed.After a new node detects the whole net,this model can choose a way to add the node into the net so that the new node brings the least time cost and a high efficient and distributed multicast tree is constructed. Simulation experiments show that the ASDDIF model can build the multicast net with high efficient transmission paths and reduce the delay of the multicast tree efficiently.

Key words: Application Layer Multicast(ALM);delay impact factor;selfchoose;high distribution