An optimization framework for routing protocols in VANETs: a multi-objective firefly algorithm approach

With Automobiles becoming the main form of transportation adopted in all parts of the world, it has become a necessity to develop useful applications providing safety and entertainment by harnessing the communication between the vehicles. Vehicular adhoc networks (VANET) forms the backbone for efficiently communicating among the vehicles. VANETs on the downside do not have a stable topology and has frequent network disconnections due to its high mobility. Taking all these factors into consideration, designing and implementing VANET routing protocols is a challenge. The proposed framework depends on the use of network resources to further reflect the current system condition and adjust the arrangement between continuous network topology changes and the QoS needs. It consists of three stages: The VANET scenario generator for creating network road and traffic scenarios, formulating the weighted cost function, and finally the optimization phase to identify the optimized configuration based on the weighted cost function formulated. The proposed approach (FA-OLSR) was simulated and the simulation results revealed and improved Packet Delivery Ratio, Mean Routing Load, and End-to-End Delay.