Abstract
Vehicular ad hoc networks (VANETs) have earned a gigantic consideration in the recent era. Wide deployment of VANETs for enhancing traffic safety, traffic management, and assisting drivers through elegant transportation system is facing several research challenges that need to be addressed. One of the crucial issues consists of the design of scalable routing algorithms that are robust to rapid topology changes and frequent link disconnections caused by the high mobility of vehicles. In this article, first of all, we give a detailed technical analysis, comparison, and drawbacks of the existing state-of-the-art routing protocols. Then, we propose a novel routing scheme called a Reliable Path Selection and Packet Forwarding Routing Protocol (RPSPF). The novelty of our protocol comes from the fact that firstly it establishes an optimal route for vehicles to send packets towards their respective destinations by considering connectivity and the shortest optimal distance based on multiple intersections. Secondly, it uses a novel reliable packet forwarding technique in-between intersections that avoids packet loss while forwarding packet due to the occurrence of sudden link ruptures. The performance of the protocol is assessed through computer simulations. Simulation outcomes specify the gains of the proposed routing scheme as compared to the earlier significant protocols like GSR (Geographic Source Routing), GPSR (Greedy Perimeter Stateless Routing), E-GyTAR (Enhanced Greedy Traffic Aware Routing), and TFOR (Traffic Flow-Oriented Routing) in terms of routing metrics such as delivery ratio, end-to-end delay, and routing overhead.
Highlights
The immense growth of automobiles and irregular behavior of drivers on the road cause traffic congestion, accidents, wastage of fuel, and loss of precious lives, which makes the existing transportation system inefficient
We propose a novel routing strategy called Reliable Path Selection and Packet Forwarding Routing Protocol (RPSPF), which selects the junction by considering multiple intersections based on the shortest path and traffic density and forwards packet using reliable forwarding strategy for tackling aforementioned circumstances
We provide a comparative study and in-depth analysis of Reliable Path Selection Packet Forwarding (RPSPF) with respect to Greedy Perimeter Stateless Routing (GPSR), Geographic source routing (GSR), Greedy Traffic Aware Routing Protocol (GyTAR), and Traffic flow-oriented routing protocol (TFOR) considering the aforementioned metrics
Summary
The immense growth of automobiles and irregular behavior of drivers on the road cause traffic congestion, accidents, wastage of fuel, and loss of precious lives, which makes the existing transportation system inefficient To direct these challenges, a new research field called as Intelligent Transportation System (ITS) has been proposed. The academic research society, major car manufacturers, and governmental institutes are making efforts to develop VANETs. Various significant projects are initiated by different countries and famous industrial firms such as Daimler-Chrysler, Toyota, and BMW for inter-vehicular communications. Various significant projects are initiated by different countries and famous industrial firms such as Daimler-Chrysler, Toyota, and BMW for inter-vehicular communications Some of these prominent projects include CarTALK2000 [4], Car-to-Car Communication ConsortiumC2CCC [5], Advanced Driver Assistance Systems (ADASE2), California Partners for Advanced Transit and Highways (California PATH) [6], FleetNet [7], DEMO 2000 by Japan Automobile Research
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