NAVI: Neighbor Aware Virtual Infrastructure for Information   Dissemination in Vehicular Networks
  Vehicular Networks enable a vast number of innovative applications, which rely on the efficient exchange of information between vehicles. However, efficient and reliable data dissemination is a particularly challenging task in the context of vehicular networks due to the underlying properties of these networks, limited availability of network infrastructure and variable penetration rates for distinct communication technologies. This paper presents a novel system and mechanism for information dissemination based on virtual infrastructure selection in combination with multiple communication technologies. The system has been evaluated using a simulation framework, involving network simulation in conjugation with realistic vehicular mobility traces. The presented simulation results show the feasibility of the proposed mechanism to achieve maximum message penetration with reduced overhead. Compared with a cellular-based only solution, our mechanism shows that the judicious vehicle selection can lead to improved network utilization through the offload of traffic to the short-range communication network. 
Pedro M. d'Orey, Nitin Maslekar, Idoia de la Iglesia and Nikola K.   Zahariev
cs.NI