Improving beacon dissemination in VANETs — A cyber-physical system based design

One critical issue for vehicular safety applications is how to timely and reliably disseminate kinetic information, known as beacon, among vehicles. In this paper, we try to improve the beacon dissemination performance in vehicular ad hoc networks (VANETs) especially in drastic disturbance scenarios. To this end, a decentralized beacon dissemination control scheme (DBDCS) is proposed from the cyber-physical system perspective, where both the vehicle dynamics and VANET behaviors are jointly considered. In the envisioned scheme, the control channel interval for beacon dissemination can be adaptively adjusted based on both the current local traffic dynamics and the networking situation. Numerical results show that the proposed scheme can significantly improve the beacon dissemination performance especially in disturbance scenarios.