Abstract
5G technologies promise faster connections, lower latency, higher reliability, more capacity and wider coverage. We are looking to rely on these technologies to achieve Vehicle-to-Everything (V2X) communications, which increase the safety and autonomy of vehicles in addition to road safety, saving energy and costs. The integration of vehicular communication systems and 5G is the subject of many research. Nowadays, researchers address challenges such as automated and intelligent networks, cloud and edge data processing, network management, virtualization, security, privacy and finally interoperability. This paper provides a survey of the latest V2X use cases including requirements, and various 5G enabling technologies under consideration for vehicular communications. Subsequently, we first provide an interesting mapping between the three 5G pillars and V2X use case groups. Then, we present a summary of potential applications of enabling technologies for V2X use case groups. Finally, the open directions of research are discussed, and the challenges that await to be met are pointed out.
Highlights
N OWADAYS, advances in wireless communications allow information sharing through real time Vehicleto-Pedestrian (V2P), Vehicle-to-Vehicle (V2V), vehiclesinfrastructure (V2I) and over a cellular network (V2N) communications
V Open and future research directions. This survey was prepared with the purpose of studying the interaction between the V2X use cases presented in the technical reports by standardisation bodies/industry consortia, and the literature on 5G enabling
In order to show the value added by this survey and its position among the recent surveys related to vehicular communications, a summary of these surveys will be presented
Summary
N OWADAYS, advances in wireless communications allow information sharing through real time Vehicleto-Pedestrian (V2P), Vehicle-to-Vehicle (V2V), vehiclesinfrastructure (V2I) and over a cellular network (V2N) communications. Cloud/Centralized Radio Access Network Cooperative Awareness Message CAPital EXpenses European Conference of Postal and Telecommunications Administrations Cooperative Lane Change Cooperative Collision Avoidance Decentralized Environmental Notification Message Electronic Control Unit enhanced Mobile Broadband Emergency Trajectory Alignment European Telecommunications Standards Institute Full-Duplex Intelligent Transport Systems Inter-Vehicle Communications Key Performance Indicator Local Dynamic Map Level of Automation Mobile Ad Hoc Network Mobile (or Multi-access) Edge Computing massive Machine Type Communications Millimeter Wave Mobile Network Operator Multi-Radio Dual Connectivity Network Function Virtualization Non-Orthogonal Multiple Access New Radio, 5G radio access technology OPErating EXpenses Public Land Mobile Network Software Defined Networking Telecommunications Technology Association User Equipment Ultra-Reliable and Low-Latency Communications Vehicle-to-Infrastructure Vehicle-to-Network Vehicle-to-Pedestrian Vehicle-to-Vehicle Vehicle-to-Everything Vehicular Ad Hoc Network. The ability to process data and enhance latency is increased, while network slicing allows the division of one physical network into multiple virtual networks, which allows the exploitation of network resources and the service of different applications
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