Abstract
The high node mobility in Vehicular Ad-hoc Networks (VANETs) leads to frequent topology changes and link breaks. Geographic routing protocols are more suitable for these networks where the use of position-to-position paradigm to forward data. We need to know the destination position usually given by an external service denoted as a location-based service. However, geographic routing protocols and location-based services are often implemented separately and are not gathered. In this paper, we discuss a coupling mechanism of geographic routing protocols and hierarchical location-based services. We have implemented this mechanism under the NS-2 simulator. We have shown the reduction of the location-based service overhead. In the meantime, the packet delivery ratio and the average end-to-end delay have been improved.
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