Abstract
Vehicular Ad Hoc Networks (VANET) are self-organized wireless network for Intelligent Transportation Systems (ITS) that allow vehicles to collaborate with each other, to improve driving efficiency and enhance traffic safety without centralized infrastructure. Vehicles are equipped with sensors, global positioning systems (GPS) and communication systems to perform the tasks related to safety, efficiency, and comfort on the road. Data dissemination strategies in VANET help in improving safety, efficiency and comfort by reducing the delivery delay time and ensuring the reliability of message delivery. The available literature papers contain a number of proposed techniques for data dissemination in VANET. This paper presents a systematic literature review for existing data dissemination techniques in VANET in the viewpoint of the data related characteristics and applications such as safety and infotainment. The motivation behind this work is to provide the audience with the required understanding of the data dissemination in VANET, highlight potential opportunities and challenges, and also investigate the recent studies available in reputed resources directed towards the domain of data dissemination in VANET. Especially, this paper provides the audience with a comparative analysis of delay-tolerant and delay-sensitive data dissemination in VANET.
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