关键词: 对等网, 节点状态, 区分服务, 激励机制, Peer-to-Peer, differentiated service

Abstract: Analyzing nodes behaviors in a PeertoPeer (P2P) network can effectively provide different services and encourage nodes to share resources, thereby improving the system performance. Using states to represent nodes behaviors, P2P node state model was proposed to describe the process of states transition. The model was combined with nodes behaviors assessment mechanism to specify conditions of node state. Experimental results show that the model, which has good scalability and availability, can achieve service differentiation and promote resources sharing by nodes.

Key words: node state, incentive mechanism