Abstract
In order to improve the performance of Application Layer Multicast (ALM),bus-type model based on comprehensive performance for application layer multicast (CPBM) was proposed,which introduced both hierarchy architecture and the comprehensive performance of node. Dynamic programming method based on the comprehensive performance of node was used in CPBM,so that the system could adjust the location of each node automatically according to its comprehensive performance. Besides,in every cluster,the nodes followed into a bus-type with their comprehensive performance from high to low,and the node with highest comprehensive performance was selected as the Leader node. Simulation results show that CPBM possesses higher data delivery ratio and bandwidth usage compared with NICE,so that it can improve the performance of application layer multicast fairly well to some extent.
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