Trust Based Secure Content Delivery in Vehicular Networks: A Bargaining Game Theoretical Approach

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Abstract
Vehicular networks expect to promote the road safety for moving vehicles and improve the driving experience of drivers. In the vehicular networks, secure content delivery becomes significant yet very challenging to protect the vehicles from various threats. To this end, this paper proposes a secure content delivery scheme in vehicular networks when the vehicles request the roadside units(RSUs) for content delivery services. Specifically, we first establish a novel trust evaluation scheme for both the vehicles and RSUs by exploiting other vehicles to monitor the actions during the process of content delivery. Then, a bargaining game based pricing model is proposed to motivate the vehicles and RSUs to act more positively to facilitate content delivery. Next, to achieve the secure content delivery and optimize the players' utilities, we apply the backward induction method in a two-round game and an M-round game, respectively. Finally, simulation results are provided to evaluate the efficiency of the proposed scheme by comparing with several conventional schemes.
Funding Information
  • National Natural Science Foundation of China (U1808207, 91746114, 61771427, U1709214)
  • Higher Education Discipline Innovation Project (D18003)
  • Science and Technology Commission of Shanghai Municipality (18510761000)

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