Vehicular Networks and Vehicle‐to‐Infrastructure (V2I) Networking

Vehicular network is an essential part of the contemporary wireless network, which plays a vital role in intelligent transportation system (ITS). Driven by the ever-increasing needs for making our lives and cities smart, vehicular network nowadays goes beyond the information exchange among vehicles, transforming to “vehicle-to-everything” (V2X). In this article, we present the fundamentals of vehicular networks and vehicle-to-infrastructure (V2I) networking, called V2X networking for simplicity. First of all, we start by discussing the emerging use cases for V2X networking, together with their service requirements. Second, we elaborate on several vehicular networking technologies and protocols, with the main focus on dedicated short-range communications (DSRCs) and cellular V2X. At last, we provide the outlooks for future V2X networks and identify the research challenges.