In-car shopping: A data dissemination scheme for vehicular networks in urban areas

Vehicular Ad hoc Network(VANET), an infusive area for the development of Intelligent Transportation System (ITS), is going to be a significant communication pattern in our moving life. Data dissemination is an important part of VANETs. The demand of disseminate commercial advertisements in moving cars emerges. To satisfy the demand of shopping in car, we proposed a new data dissemination scheme in this paper. Our scheme aims at disseminating the shopping information cached in RSUs. We adopt the Information Centric Network (ICN) in forward mechanism and take both pull-based and push-based in to account. At the same time, our communication model combines V2V and V2I. In this way, our scheme improves the performance of traditional data dissemination and makes in-car shopping a reality. In addition, in order to avoid broadcast storm and the waste of resources, Distance Based Forwarding (DBF) is employed in broadcasting when vehicle desire a content unit. A computing method of XOR is also adopted in RSUs to avoid information redundancy. Simulation results show that the proposed protocol outperforms existing protocols in terms of the request success ratio, request-response delay, message overhead and collision rate.