Vehicle-to-vehicle and vehicle-to-infrastructure communication (also known as V2X) can augment vehicle perception, which is a key factor in Advanced Driving Assistance Systems (ADAS) as well as in the future scenario of Automated Driving. The European project AutoNet2030 demonstrates how the combination of V2X and on-board sensors makes vehicle control, manoeuvring negotiations and interaction between vehicles more efficient and reliable. The target driving scenario involves a group of vehicles moving in a coordinated way, thanks to vehicle-to-vehicle communication. This requires a novel set of messages, to transmit vehicle status, trajectories and manoeuver intentions, such as lane change, within the group. Another research topic is the interaction between the on-board system and the driver (Human Machine Interaction, HMI), considering both the novel manoeuvre coordination concepts, and the gradual introduction of automated functions from an end user perspective. These concepts are integrated into prototype vehicles, which are going to be experimented in the next future to understand the full system potential.
Two emerging technologies in the automotive domain are autonomous vehicles and V2X communication. Even though these technologies are usually considered separately, their combination enables two key cooperative features: sensing and maneuvering. Cooperative sensing allows vehicles to exchange information gathered from local sensors. Cooperative maneuvering permits inter-vehicle coordination of maneuvers. These features enable the creation of cooperative autonomous vehicles, which may greatly improve traffic safety, efficiency, and driver comfort. The first generation V2X communication systems with the corresponding standards, such as Release 1 from ETSI, have been designed mainly for driver warning applications in the context of road safety and traffic efficiency, and do not target use cases for autonomous driving. This article presents the design of core functionalities for cooperative autonomous driving and addresses the required evolution of communication standards in order to support a selected number of autonomous driving use cases. The article describes the targeted use cases, identifies their communication requirements, and analyzes the current V2X communication standards from ETSI for missing features. The result is a set of specifications for the amendment and extension of the standards in support of cooperative autonomous driving.
Standardization efforts are currently underway to realize the Europe-wide deployment of Smart-Grids. Numerous protocols have already been standardized; each tailored to a distinct application domains. Amongst these, Smart Metering and EV charging have only recently started to converge, and the goal of the PowerUp project has been to advance such convergence. This paper presents the major results from the project. The PowerUp consortium has specified and developed an end-to-end EV to Grid communication system, respecting the applicable communications standards. After introducing the underlying system architecture for the end-to-end integration of the Vehicle- to-Grid (V2G) communications interface, we describe critical Smart-Grid integration aspects for each protocol layer within the V2G communications protocol stack. Finally, prototype test observations are presented. The outlined end-to-end integration of the V2G interface demonstrates the technological solution for ensuring that even mass-deployment of EVs would not interfere with the stability of the electric grid.
This paper proposes a suitable scalability principle for each major vehicular communication scenario: periodic safety broadcasts, event-driven safety broadcasts, and unicast message forwarding. Each scenario section investigates an appropriate design of individual congestion control tools for the implementation of related scalability principle.
Estimating channel utilization at beaconing edge is important, so that power control feedback can be based on comparing this utilization rate to a target level. The beaconing edge channel utilization estimate presented in the ‘Resource Sharing Principles for Vehicular Communications’ paper is revised with the following aspects; taking an estimate of link asymmetry into account, interpolating on link attenuation metric instead of distance metric.
This paper proposes a timing algorithm for assignment of beacon transmissions. The proposed geographically derived beacon timer solves the problem of ‘hidden-terminal’ packet collisions for periodic broadcasts and certain unicast messages, regardless of particular road network topology details.