Heuristic Routing with Infrastructure Nodes for Data Dissemination in Vehicular Networks

This paper presents a protocol called Heuristic Routing with Infrastructure Nodes (HRIN) for data dissemination in vehicular networks. The main goals of this work aims to increase the packet delivery ratio and reduce the end-to-end delay. To achieve these goals, we propose two heuristic functions for Road Segments Selection (RSS) and Intermediate Nodes Selection (INS). Further, we propose the deployment of the Road-side Unit (RSU) on each road junction. RSUs can further assist the vehicles in data dissemination. The RSS is the combination of two probability functions, shortest distance, and higher connectivity. On the other hand, the INS is based on four quantities, vehicle's speed difference, vehicle's moving direction, number of packets on the vehicle, and signal fading. The simulation results of our proposed protocol achieved reasonable results for packet delivery ratio and end-to-end delay compared to the existing protocols.