Mutualcast: An Efficient Mechanism for Content Distribution in a Peer-to-Peer (P2P) Network

Mutualcast is a new delivery mechanism for content distribution in peer-to-peer (P2P) networks. Compared with prior one-to-many content distribution approaches, Mutualcast achieves full utilization of the upload bandwidth of the peer node, thereby maximizing the delivery throughput. Mutualcast splits the to-be-distributed content into many small blocks, so that the more resourceful nodes may redistribute more blocks, and the less resourceful nodes may redistribute less blocks. Each content block is assigned to a single node for distribution, which can be a content-requesting peer node, a non-content-requesting peer node, or even the source node. The throughput of the distribution is controlled by redistribution queues between the source and the peer nodes. Furthermore, Mutualcast is simple and flexible. It can be applied to file/software downloading, media streaming, real-time audio/video conferencing, etc.

For more information of the MutualCast system, please refer to the paper:


©Copyright by Jin Li, Nov. 23, 2004