A bandwidth allocation algorithm for multiple P2P overlay networks

A bandwidth allocation scheme based on multiple peer-to-peer (P2P) overlay networks is proposed for P2P live video streaming system to solve the bandwidth resource competition among coexisting P2P overlays. The nodes are grouped based on the sets of different channels that are being watched, and the bandwidth allocation strategies among different channels are given for the resulting groups. Then partner relationships among peers and the corresponding overlay topologies are established based on the bandwidth allocation strategies. Finally, the bandwidth allocation is implemented through a data response strategy of P2P node requesting to select partners for a node in respect to the bandwidth allocation strategy. Simulation results shows that the bandwidth resources are fairly shared among different channels. A comparison with the random strategy shows that the average arriving delay of data is reduced, and the average download speed is increased.