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The IUP Journal of Computer Sciences :
Routing Issues and Related Routing Protocols in VANETs: A Review
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As the technology is advancing every day, the networking process is also changing to provide comfort to the users. The last few decades witnessed the emergence of research industry to provide such applications to the users during driving, and for this purpose, a new adhoc network came into existence, viz., Vehicular Adhoc Network (VANET). This is a kind of networking between different vehicles running on the road and creates a connection between nearby vehicles to exchange the information between them. Earlier researches on VANET considered only a single type of routing protocol, viz., topology-based routing protocols, but this type of protocols was not suitable for VANETs, resulting in the introduction of different types of routing protocols. The list of the routing protocols for VANET is quite large and different authors have categorized these protocols in different ways. To start working in this field requires understanding of a majority of these protocols. Moreover, routing protocols designed for VANETs cannot be directly implemented in vehicles before verification and validation. So keeping the above things in mind, the paper provides an insight into the routing techniques adopted by the VANETs, their classification based on different factors, and the pros and cons of different types of routing protocols for VANETs.

 
 
 

In recent times, Intelligent Transportation Systems (ITS) has been a key area of research. Studies on ITS were started in Japan by the Association of Electronic Technology for Automobile Traffic and driving in the 1980s (Tsugawa, 2008), whereas the US started research on ITS in 1986 with California Partners for Advanced Transportation Technology Project (PATH) (Shladover, 1992). The European Union (EU) started CHAUFFEUR (Gehring and Fritz, 1997) as their first ITS project in the late 1990s. CarTALK 2000 (Reichardt et al., 2002), EVITA (Henniger et al., 2009), iTETRIS (Kumar et al., 2010) PReVENT (Amditis et al., 2008), SAFESPOT (Brignolo, 2006), Sevecom (Papadimitratos et al., 2008), COOPERS (Cooperative Systems for Intelligent Road Safety Project), CVISPRE-DRIVE C2X (The European Project PRE-DRIVE C2X), and GeoNet (Mariyasagayam et al., 2008) were a few projects being carried out by the European Commission between 2006 and 2010. Meanwhile, some automobile manufacturers have come together and started an organization called Car2Car Communication Consortium (C2C-CC) (CAR 2 CAR Communication Consortium Manifesto, www.car-to-car.org).

 
 
 

Computer Sciences IUP Journal, Vehicular Adhoc Network (VANET), Routing protocols, City scenario, Urban scenario, Adhoc network.