Fuzzy-Controlled Scheduling of Route-Request Packets (FSRR) in Mobile Ad Hoc Networks

In ad hoc networks, the scheduling of route-request packets should be different from that of message packets, because during transmission of message packets the location of the destination is known whereas in route discovery this is not known in most of the cases. The router has to depend upon the last known location, if any, of the destination to determine the center and radius of the circle that embeds all possible current position of the destination. Route-request packets generated from the source are directed towards this circle i.e., directional route discovery can be applied. Otherwise, when no earlier location of the destination is known the route-requested has to be broadcast in the whole network consuming a significant amount of time than directional route discovery. The present article proposes a fuzzy controlled scheduling of route-request packets in particular that greatly reduces the average delay in route discovery in ad hoc networks.