Constructing an Overlay Using a Shared Object Set for Streaming Services on a P2P Network

In an on-demand streaming service on a P2P network, a client peer can receive parts of a video object from different peers instead of from just one server. For this, the client peer must find enough peers that have the required object. In this paper, we propose a method of constructing an overlay to search for objects efficiently for the ondemand streaming services on a pure P2P network. The proposed overlay is composed of groups, and all peers in a group have common objects. We compared our method with Gnutella by simulation. The results show that our method reduces traffic overheads, hop counts, and the number of messages, at the cost of join/leave overhead.