A New Framework for Request-driven Data Harvesting in Vehicular Sensor Networks

Vehicular Sensor Networks (VSNs) are an emerging network paradigm, suitable for various applications in smart-intelligent-vehicular network making use of vehicles’ sensors as data sources and Inter-Vehicle Communication systems for the transmissions. The main issues in VSNs reside in the data harvesting and its dissemination in such a large-scale network, characterized by the frequent topology changes and network partitioning. To achieve this, an efficient collaboration between sensors and vehicles is required. This paper proposes a new multi-hop Collaborative Data Replicas Harvesting Protocol (CDRH) based on data replication on VSNs in an urban scenario. The aim of our proposal scheme is to achieve a high accessibility to a Request Data while maintaining a low level of channel utilization. The simulation results show that this protocol can achieve significant performance benefits.