Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/12/01 Vol. E88-BNo. 12pp. 4490-4497 Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Section on Autonomous Decentralized Systems) Category: Ad hoc, Sensor Network and P2P Keyword: P2P, mobile ad-hoc network, topology, metadata, overlay network,