An Efficient Routing Protocol for Vehicular Ad-Hoc Networks

Background: VANETs (Vehicular Ad-Hoc Networks) are the subclass of MANETs, which have recently emerged. Due to their swift changing topology and high mobility nature, it is challenging to design an efficient routing protocol for routing data amongst both moving vehicles and stationary units in VANETs. In addition, the performance of existing routing protocols is not effective due to the high mobility characteristics of VANETs. Methods: In this paper, we proposed a link reliabiliy routing strategy that makes use of Restricted Greedy Forwarding by considering neighborhood vehicle density and the least, and average velocity with its own neighboring vehicles for the selection of the next forwarder. Results: The proposed approach is based on the assumption that at every junction the policepatrolling car (i.e. PCR junction node), forwards the packet to a vehicle onto the correct road segment only. The link reliability is ensured by the mechanism of the selection of the next forwarder. Conclusion: The objective of this paper is to increase route reliability to provide increased throughput without significantly affecting end-to-end delay. The simulation results reveal that the proposed approach Reliable GPSR(R-GPSR) outperforms the existing GPSR and E-GyTAR approach.