iForest: An informed resource search strategy in mobile P2P networks

With the increasing applications of the mobile P2P networks, how to improve the resource search performance has been an important research focus. Peers’ features of strong mobility, short wireless transmission range and malicious behavior make the efficient and effective resource search more difficult in mobile P2P networks. This paper proposes an informed resource search strategy, iForest, in mobile P2P networks. To tackle the issue of peer’s mobility, we present a quantifying method of a neighbor peer’s stability; to deal with the problem of a peer’s malicious behavior, we employ the idea of peer’s credibility; to improve the resource search efficiency, we use the concept of peer’s resource accessibility. These guidance factors are derived and calculated based on the findings that each peer’s movements often repeat on a day-to-day basis and each peer has its own interests in mobile P2P networks. The simulation results showed that the iForest strategy could both improve the resource search success rate and reduce the communication complexity.