A Pub/Sub extension to NDN for efficient data collection and dissemination in V2X networks

Abstract

Named Data Networking (NDN) gives more importance to content instead of its location. On the other hand, V2X networks carry a wide variety of content such as events, traffic information and infotainment content. Therefore, NDN native capabilities in terms of caching and multicast can reduce traffic load in V2X networks and consequently decrease congestion risk. However, the communication in NDN is based on a request-response pattern while it is event based in V2X. Thus, this paper extends NDN with a Pub/Sub capability in order to provide an efficient data collection and dissemination in V2X networks. In this paper, we study the limitations of using NDN and the challenges of extending it with Pub/Sub and propose a new protocol that handles V2X characteristics. Simulation results of data dissemination shows that the number of Subscribe messages generated in vehicles present at most the one tenth of the total received Publish messages while, without the Pub/Sub extension, the number of Interests will be equal to the number of Data messages without considering message losses.