Fuzzy-controlled Localized Route-repair (FLRR) for On-demand Routing Protocols in Mobile Ad hoc Networks

On demand routing protocol is an important category of the current ad hoc routing protocols, in which a route between a pair of nodes is formed as needed. However, due to the dynamic and mobile nature of nodes, intermediate nodes in the route tend to loose connection with each other during the communication process. When this occurs, an end-to-end route discovery is typically performed to establish a new connection for communication. Such route repair mechanisms cause high control overhead and long packet delay. In this paper, we propose a fuzzy-controlled localized route-repair (FLRR) scheme which aims at reducing control overhead and achieving fast recovery during route breakage. We present simulation results to illustrate the performance benefits of FLRR mechanism.