P3ON: Proximity-based Peer-to-Peer Overlay Networks

Peer-to-peer(P2P) overlay networks provide robust, scalable file sharing services. The hop distance between two virtual nodes in P2P overlay networks is irrelevant to the real distance between two nodes. Therefore, many lookup operations may be executed, without considering the real distance, even though a node wants to find a file object located in another node within the same subnet. To overcome this drawback, we propose a proximity-based peer-to-peer overlay networks (P3ON). In P3ON, the proximity between two nodes is exploited to achieve a fast lookup operation. In other words, two nodes within the same subnet are mapped to the adjacent overlay nodes, so that the lookup time between them can be reduced significantly. In addition, two phase lookup algorithm and caching scheme are suggested to maximize the locality in P3ON. In our future work, we will extend P3ON to support large-scale P2P services as well as hierarchical mobile P2P services.