A FLRBF scheme for optimization of forwarding broadcast packets in vehicular ad hoc networks

Due to the highly dynamic network feature, Vehicular Ad Hoc Networks (VANETs) suffer from the frequent link breakage and low packet delivery rate, which pose challenges to design routing protocols. To address this issue, we propose a Fuzzy Logic Routing Based on Forwarding (FLRBF) optimization scheme depending on receiving nodes for optimizing forwarding broadcast packets. We first calculate and record the distance factor and time delay from one source node to the destination node. Via the above information, we define a forwarding probability value for each node by the proposed fuzzy logic system based on high priority routing algorithm. Motivated by the defined forwarding probability values, nodes set timers and forward packets to achieve balancing broadcast efficiency, network throughput and average end-to-end delay. In the end, we conduct simulations to verify the performance of FLRBF. Results demonstrate that the proposed protocol performs well in terms of packet delivery ratio, end-to-end delay and overhead.