Fuzzy Query Routing in Unstructured Mobile Peer-to-Peer Networks

Abstract

Due to the disparity between the peer-to-peer (P2P) and the physical networks, we study the challenging problems of mobile routing in unstructured P2P networks over mobile ad hoc networks (MANETs). To route queries and objects of interest, the existing mobile P2P protocols widely adopted an inflexible techniques which experience a relatively high delivery time due to remarkable network traffic, nodes mobility and broken links. The bond between routing and mobility is crucial to obtain efficient searching in mobile P2P network. To solve this problem, we proposed fuzzy search controller [1] which reduced search time but due to peer mobility the protocol causes low hit rate and high overhead. Thus, this article proposes novel fuzzy controller based possibilistic routing for unstructured mobile P2P networks to reduce routing time. The possibilistic routing is based on ultrapeer mobility, active time and location. The inference rules are defined to select the best route to forward query walker. Simulations show that the fuzzy search controller gives better performance than the competing protocols in terms of reducing response time and increasing hit rate in different mobility scenarios.