Delayed Broadcast-Based Data Forwarding Strategy for Vehicular Named Data Networks

In vehicular named data networks (VNDNs), the characteristics of high mobility and intermittent connectivity of vehicles bring challenges to stable communication between vehicle nodes. In addition, the consumer in named data networking (NDN) obtains data by broadcasting interest packets, and if it is not controlled, redundant packets will be generated, which will cause broadcasting storms. In response to the above problems, this paper proposes a delayed broadcasting-based data forwarding method. The method designs a data content discovery process that can obtain the location of the content producer before the data request, after which the forwarding timer is set according to the distance and relative speed, and the vehicle node with the shorter timer has a higher forwarding priority, effectively avoiding the generation of broadcast storms. The simulation results show that the method can effectively reduce the delay and improve the interest packet satisfaction rate.