Network Coding and Cross-Layer Approach for Reliability and Optimization of Routing in VANET: A Survey

Vehicular Ad-hoc Networks (VANET) is a subclass of mobile ad hoc networks. VANET provides wireless communication among vehicles and vehicle to roadside equipment. The communication between vehicles is regarding safety, comfort and entertainment. The performance of whole system depends on the reliability of the system and the routing of messages. Routing depends on the kind of routing protocol that is used. In this study we, aim to study the routing protocols designed specifically for VANET. Due to the highly dynamic nature and set of challenges in the VANET environment, routing techniques designed for MANET cannot work with VANET. In order to increase the reliability and optimization of routing protocols, researchers have suggested methods like Network Coding and cross layer approach. This paper also gives an overview of these and effectiveness of these methods. General Terms Wireless Ad-hoc Networks, Vehicular Ad-hoc Networks (VANET), Routing protocols.