Scalable Application Layer Multicast With Low Network Delay

Application layer multicast (ALM) is considered as an attractive approach for implementing wide area multicast services. In ALM, multicast functionality is implemented at the edge instead of the core network (routers). Compared with network-layer multicast, application layer multicast requires no infrastructure and can be easily deployed in the Internet. In this paper, we propose an optimizing multicast algorithm, which considers node performance, delay constraint and resource consumption. This algorithm optimizes the method of node clustering. We extensively evaluate our algorithm by theoretical analysis and experiments which show that the algorithm will bring significant benefits to reduce the average end-to-end delay. The result of experiments shows that the data delay is 90% of NICE.