A Concise Survey on Recent Routing Protocols for Vehicular Ad hoc Networks (VANETs)

In VANETs, the vehicles communicate with each other either directly or using some infrastructure. Due to high mobility behavior of nodes in VANETs, communication among vehicles faces several challenges. Additionally, there are other factors also which effect routing performance in VANETs such as vehicular density, link stability, and vehicle speed etc. Several efficient routing protocols have been designed to route messages between nodes. Moreover, different routing approaches can be used based on the application scenario and network situation. Therefore, selection of appropriate routing strategy is an important issue in VANETs. The present paper discusses the most recent routing protocols proposed for VANETs in last five years. The discussed protocols have been divided in to three categories namely, geographical or position based, topology based and cluster based routing. The protocols have been analyzed for their advantages, disadvantages and applicability in various scenarios.