Optimal roadside unit placement with location privacy enhancement in vehicular social network

Vehicular social network is envisioned to serve as an essential data sensing, exchanging and processing platform for the future intelligent transportation systems. However, large-scale and concurrent appearing vehicles bring new challenge to existing location privacy protection schemes in vehicular social networks. These schemes only enable privacy protection but seldom considering quality of privacy (QoP). In this paper, we propose an optimal roadside infrastructure placement scheme with location privacy enhancement. This scheme takes load balance ratio as the parameter of QoP, and solves the load unbalance problem in vehicular social networks. Simulation results illustrate that the proposed scheme achieves higher privacy preservation and better performance in load balance.