PulseLarsen DSRC, V2X Antennas
Vehicle-to-everything (V2X) communication is the passing of information from a vehicle to any entity that may affect the vehicle, and vice versa. It is a vehicular communication system that incorporates other more specific types of communication as V2I (Vehicle-to-Infrastructure), V2V (Vehicle-to-vehicle), V2P (Vehicle-to-Pedestrian), V2D (Vehicle-to-device) and V2G (Vehicle-to-grid). The main motivations for V2X are safety and energy savings. The main obstacles to its adoption are legal issues and the fact that, unless almost all vehicles adopt it, its effectiveness is limited. British weekly “The Economist” argues that autonomous driving is more driven by regulations than by technology. V2X communication is based on WLAN technology and works directly between vehicles, which form a vehicular ad-hoc network as two V2X senders come within each other’s range. Hence it does not require any infrastructure for vehicles to communicate, which is key to assure safety in remote or little developed areas. WLAN is particularly well-suited for V2X communication, due to its low latency. It transmits messages known as Common Awareness Messages (CAM) and Decentralised Notification Messages (DENM) or Basic Safety Message (BSM). The data volume of these messages is very low. The radio technology is part of the WLAN IEEE 802.11 family of standards and known in the US as Wireless Access in Vehicular Environments (WAVE) and in Europe as ITS-G5.
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