A Geographic Routing Strategy with DTN Support for Vehicular Named Data Networking

The Vehicular Ad Hoc Network (VANET) is used for communication among vehicles to provide traffic and other important information critical for smart transportation. Named Data Networking (NDN) is a recently proposed future Internet architecture that focuses on what the content is rather than where the host is. In this paper, we propose a new geographic routing strategy of applying NDN in vehicular networks with Delay Tolerant Networking (DTN) support, called GeoDTN-NDN. One challenge of using NDN in VANET is that in addition to the flooding problem of interest forwarding, data forwarding and delivery may also experience disruption because of the high mobility of vehicles in VANETs. We adapt geographical routing mechanisms to deal with the flooding problem of interest forwarding and the disruption problem of data forwarding in NDN. We introduce a hybrid geographic routing solution with restricted greedy, greedy, perimeter, and DTN modes in packet forwarding. To evaluate the performance, we compare the results of our solution with the original Vehicular Inter-Networking via Named Data Networking (V-NDN). Our hybrid geographic routing solution that deals with both interest forwarding and data delivery results in better performance.