An Efficient Content Searching Method Using Transmission Records with Wasted Queries Reduction Scheme in Unstructured Peer-to-Peer Networks

摘要

A lot of content searching methods applied to Peer-to-Peer (P2P) networks have been researched recently. However, especially in unstructured P2P networks, the amount of traffic grows when a flooding-based content searching is adopted because of a lot of wasted queries. Accordingly, we proposed a content searching method for unstructured P2P networks in our former research, in which each peer keeps query transmission records and guides queries properly so as to reduce wasted ones according to the records by canceling query transmissions to the peers with low content existing probability. In this paper, we improve the proposed method by adding wasted query reduction scheme which works while the usual flooding is executed, and reduce the network traffic without degradation of content acquisition rate. In addition, we discuss the availability of the newly proposed method with its evaluation results given by computer simulations.