Geographic forwarding techniques: Limitations and future challenges in IVC

Maintaining the reliability of Next Hop selection (NH
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) in Inter-Vehicle Communication (IVC) technology has witnessed significant attention among researchers nowadays. The reason is because reliable selection of the next hop could improve the performance of geographic routing protocols, which is a major goal of Intelligent Transportation Systems (ITS) applications. This paper provides a qualitative survey of recent Geographic Forwarding Techniques (GFTs) that have been proposed for the improvement of NH
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along the route or on the road between two junctions. We have precisely categorized GFTs and highlighted on their pros and cons. Thereafter, the directions for future research in terms of reliable NH
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are pointed out.