Impact of Location of Road-Side Units Considering Message Suppression Method for Vehicular-DTN

In previous work, we proposed a Message Suppression (MS) method for Vehicular Delay Tolerant Networking (Vehicular-DTN) considering Epidemic routing protocol. In this paper, we evaluate our proposed MS method considering two different topologies for different DTN routing protocols. The MS method works together with Direct Delivery, Spray and Wait and Epidemic routing protocols using additional packets. The simulations for two scenarios are conducted considering obstacles (buildings), where MS with Road side units (MSRs) are present and not present. We consider 802.11p standard and send bundle messages in a grid scenario. We use the packet delivery ratio, storage usage and end-to-end delay as evaluation metrics. Based on simulation results, we found that our proposed method with Epidemic routing on X-shaped scenario has better performance compared with other DTN routing protocols.