Geographic routing protocol issues in vehicular ad hoc networks

Due to high mobility and nature of vehicular adhoc environment, routing decisions in such a network are becoming a hard task. Therefore, the routing protocol must be robust to frequent link disruptions and aware of the environment surrounding the network. It is noticeable that routing-based position protocols are more appropriate for high dynamic and fast topology change networks. Many routing protocols have been proposed to enhance the delivery of data packets in a vehicular network. The goal of this paper is to review the current position-based routing protocols, in order to get more insight on the capability of these routing protocols in handling different challenges of vehicular ad-hoc networks.