Enabling Push-Based Critical Data Forwarding in Vehicular Named Data Networks

Vehicular ad hoc networks have highly dynamic topologies, making data exchange among mobile nodes challenging. Named data networking (NDN) has been applied to vehicular networks recently, and the results are promising, as NDN supports highly dynamic topologies better than traditional IP architectures. However, as of yet, vehicular named data networks (VNDNs) have no support for pushing critical data into the network, and the existing consumer pull mechanism introduces undesirable delay. Therefore, we propose a proactive data dissemination scheme for pushing critical content to one-hop neighbours in VNDN. Producers of critical content first send a beacon message containing metadata about tentative new chunks. Upon receiving the beacon message, neighbors make temporary pending interest table entries, allowing them to subsequently store new chunks once received. We evaluate the proposed scheme using ndnSIM and find it more efficient than pure consumer pull VNDN.