Abstract

Objective:  By leveraging the DSR protocol, we intend to develop a collision avoidance system that will successfully transfer emergency messages in the event of an emergency in VANET.

Methods: Initially, it is anticipated that everything would go according to plan and that DSR will be able to communicate with various autonomous vehicles. After that, in the second scenario, a subsequent emergency occurs, but DSR is unable to transmit the emergency message. These two scenarios were analyzed, and it was determined that broadcast storm is the root of the issue. To minimize this and better strengthen the present DSR protocol, several RSU are used together with more stable links with higher link lifetime.

Results: The NS2 simulation is made to replicate the situation, and QoS parameters are shown for both the existing and proposed techniques. In addition to successfully transmitting emergency messages in accident-prone areas to lower risks, the DSR protocol also exhibits better packet delivery ratio and minimal packet loss when the proposed methodology is used.

Conclusion: The deployment of numerous RSUs and selective hopping over a moderate link lifetime can increase the reliability of DSR and assist in reducing the problem of broadcast storms. A successful and assured collision avoidance system can be created using DSR.

Keywords: Autonomous vehicles, Broadcast storm, Collision Avoidance System, DSR, Link Lifetime, Link Stability, MANET, Roadside Units, VANET