Stable backbone-based geographic routing by using traffic lights as bridges in vehicular ad hoc networks Online publication date: Wed, 02-Jun-2021
by Reyhane Gazori; Ghasem Mirjalily; Laleh Eslami
International Journal of Sensor Networks (IJSNET), Vol. 36, No. 1, 2021
Abstract: Routing is very challenging in vehicular ad hoc networks due to the highly dynamic nature of the vehicles. In this paper, a position-based routing protocol is proposed, which leverages the backbone structure. This protocol contains a bridge node selection algorithm and a route updating algorithm. The first algorithm considers traffic lights at intersections as the bridge nodes, which evaluate the routes by exchanging control packets, and select the best route regarding the path weights. In the second one, bridge nodes update the route. Destination informs the bridge nodes about its previous and new locations when passing an intersection, before the message is received. Bridge nodes forward the message to the new location of the destination through a more reliable path with lower hop counts. Simulation results demonstrate that the proposed protocol outperforms the similar existing method in terms of the end-to-end delay, packet delivery ratio, and network overhead.
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