An Enhanced Vehicular Information Dissemination Based on Back-Off Time Mechanism
Abstract
Information dissemination in inter-vehicle communication is a main way to propagate and obtain the communicating messages among vehicles and infrastructures of road networks in vehicular ad-hoc network (VANET). However, a well-designed protocol for information dissemination would probably provide the higher performance of information dissemination in VANET. In this paper, we propose the improved information dissemination schemes for multi-hop broadcasting in VANET. Our proposed scheme will select a better message forwarder to forward the messages to its neighboring vehicles according to the back-off time for reducing the waiting time in the directional broadcasting. It will also adopt the road-side unit to keep the disseminated message at the intersection of the roads for waiting to disseminate the messages when the vehicle is crossing the intersection which may probably act as a message forwarder to forward the disseminated messages to the intersectional direction. In our simulation, the result indicates that our proposed scheme can efficiently disseminate the messages under the consideration of back-off time in VANET.
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