Cloud-assisted cooperative downloading method of mobile P2P network

The invention discloses a cloud-assisted cooperative downloading method of a mobile P2P network, a cloud center carries out distribution of file pieces according to computing power of nodes, a modified ant colony algorithm is utilized in a downloading process of each node in a user layer, the nodes with quick downloading speed are searched as promoters for ant way-finding, the nodes with quick downloading speed are mutually optimized as neighbor nodes of each other, so that convergence of the file pieces to an optimal node can be accelerated, and minimization of the average downloading time of the nodes in the whole network is taken as a target to complete the whole downloading process. According to the cloud-assisted cooperative downloading method, the downloading efficiency of a terminal user is directly improved; meanwhile, the expenditure of local flow of a mobile terminal is indirectly reduced.