Low cost token maintains ring-like P2P network

In order to solve the problem of maintenance messages increased linearly with the number of neighbors in the ring-like P2P network and traditional token mechanism could not control the token number, we propose method of control speed token to maintain the ring-like P2P network. Token transmit in ring-link P2P network in the form of message, and node information could record in token in order to keep the structure of network for other nodes. P2P network use control speed parameter to reduce the number of tokens. Simulation shows that control speed parameter could effectively reduce the number of token in P2P network; with the increasing scale of the network, the average maintenance costs of node remain unchanged.