VANET Routing on City Roads Using Real-Time Vehicular Traffic Information

Abstract

Abstract-This article presents a class of routing protocols called RBVT, Road-Based using Vehicular Traffic information routing, which outperforms existing routing protocols in citybased vehicular ad hoc networks (VANET). RBVT protocols leverage real-time vehicular traffic information to create roadbased paths consisting of successions of road intersections that have, with high probability, network connectivity among them. Geographical forwarding is used to transfer packets between intersections on the path, reducing the path's sensitivity to individual node movements. For dense networks with high contention, we optimize the forwarding using a distributed receiver-based election of next hops, based on a multi-criteria prioritization function taking into account non-uniform radio propagation. We designed and implemented a reactive protocol, RBVT-R, and a proactive protocol, RBVT-P, and compared them against protocols representative of MANETs (AODV, OLSR, GPSR) and a protocol representative of VANETs (GSR). Simulation results in urban settings show that RBVT-R performs best in terms of average delivery rate, with up to 40% increase compared to some existing protocols. In terms of average delay, RBVT-P performs best, with as much as 85% decrease compared to the other protocols.

Routing Protocols in Vehicular Ad hoc Networks: Survey and Research Challenges

“…-Road-Based using Vehicular Traffic Routing Protocol (RBVT) A positive step toward efficient routing protocols is taken by the authors in [64], where the authors proposed RBVT, which leverages on-board navigation systems to establish paths between the source and the destination through a sequence of intersections with high network connectivity. Furthermore, geographical forwarding is proposed to forward data packets between two consecutive junctions on the path.…”

“…However, exchanging link state information and route maintenance leads to high network overhead. In [64], the authors use beaconless forwarding optimization between intersections. In their forwarding optimization, they used power signal strength, optimal transmission range and distance parameters for packet forwarding.…”

“…However, routing of delay sensitive application is very challenging due to a demand of low latency and high reliability of their packet forwarding. We believe geo-proactive routing protocols are the best solution for routing delay sensitive packets [64]. This is because these types of routing store routes' pro-actively in its cache rather than reactively finds a route to a destination.…”

Routing in Vehicular Ad Hoc Networks: towards Road-Connectivity Based Routing

“…Recently, a group of Road-Based with Vehicular Traffic protocols (Nzouonta et al, 2009) has been proposed for VANETs. These protocols incorporate real-time vehicular traffic to compute road-based paths consisting of successions of road intersections connected among them through vehicular communications.…”

Beaconing Approaches in Vehicular Ad Hoc Networks: A Survey

“…This also leads to high channel overloading and hence packet loss. In short, the higher the frequency of beacon rate, the higher the bandwidth overload in dense traffic conditions [6].…”