SBGRP as an Improved Stable CDS-Based Routing Protocol in Vehicular Ad Hoc Networks

Routing is an important issue in vehicular ad-hoc networks due to the high speed movement of vehicles in a hostile dynamic environment. In order to improve the performance of existing routing protocols, in this paper a geographic routing protocol based on the backbone structure is introduced. In the proposed algorithm, the traffic lights are used as bridges for routing assessment instead of using the mobile vehicles. This prevents the network failures in the route selection process. In proposed protocol, by evaluating the paths through exchanging control packets between bridge nodes, the path with the smallest hop count and maximum connectivity is selected. The simulation results show that by using the proposed method, significant improvement in the network performance is obtained in comparison to the similar protocol named SCRP.