In multimedia streaming applications on P2P overlay networks, multimedia data in contents peers has to be efficiently and reliably delivered to large number of leaf peers in a real-time manner. In this paper, we propose an asynchronous multi-source streaming (AMSS) model where multiple contents peers transmit packets of multimedia contents to each requesting leaf peer. Here, each of the contents peers transmits different packets with some redundancy to the leaf peer. Even if some contents peers are faulty or packets are lost, each leaf peer can receive all the packets in a real-time manner. In addition, multiple contents peers transmit in parallel packets to leaf peers
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