Hybrid Cellular-DTN for Vehicle Volume Data Collection in Rural Areas
Yuuichi Teranishi, Takashi Kimata, Eiji Kawai, Hiroaki Harai · 2019
In this paper, we propose a new centralized Vehicle Delay/Disruption Tolerant Network (VDTN) architecture for vehicle volume data collections in the rural areas called "Hybrid DTN". Hybrid DTN applies Software Defined Network (SDN) into VDTN. A centralized controller controls data deliveries by the wide-area cellular network as a control-plane network and collects large volume sensor data from the vehicles to the cloud using VDTN as a data-plane network. We defined an oracle model called Delivery Status Oracle (DSO) for Hybrid DTN, in which the controller manages the delivery status of the distinct messages. By using DSO, Hybrid DTN can achieve the high data delivery success rate even for large volume sensor data collection in the rural cellular network. Simulation results using a real taxi trace dataset showed the practicalness of the Hybrid DTN with DSO; a combination with Epidemic routing algorithm hugely improved delivery completion rate with smaller delivery latency and smaller traffic.