Information Congestion Control on Intersections in VANETs: A Bargaining Game Approach

In VANETs, information exchange plays an important role to make vehicles aware to each other and provide references for safety or non-safety related applications. At intersections, vehicles are forced to maintain a lower mobility thereby have more time to exchange on-road or off-road context information. However, if an effective control scheme is not applied to this specific scenario, a packet congestion is more likely occurring especially when the vehicle density is high and channel load is heavy. In this paper, to solve the aforementioned problem, a congestion control scheme based on non-cooperative bargaining game is proposed. Numerical results show that our proposed Joint Power and Rate Adjustment congestion control scheme (JPRA) can greatly alleviate the possible packets collisions thus reducing the average experienced delay in queue and increasing the number of successfully delivered packets on the receiver side.