Radio Resource Allocation for V2X Communications Based on Hybrid Multiple Access Technology

With the increasing number of vehicles, many road accidents have occurred. To solve this problem, this paper investigates a security application in vehicle communications where all links require high reliability. We consider that each vehicle-to-infrastructure (V2I) communication shares spectrum resource with multiple vehicle-to-vehicle (V2V) communications. Firstly, we aim to maximize the successful transmission probability (STP) of V2V communications while guaranteeing the reliability of all V2I communications. Then, we formulate the above resource allocation problem as a combinatorial double resource auction (CDRA) problem. In the auction, radio resources occupied by V2I communications are considered as bidders competing for V2V packages. We propose an algorithm to solve the resource allocation algorithm. Finally, simulation results indicate that the proposed scheme outperforms the traditional resource allocations in terms of the reliability.