With connected car often considered as one of key applications of 5G, 3GPP has been working on the features and required technologies of vehicle-to-everything (V2X), in which coordinated efforts are made by vehicles and networks to realize advanced driver assistance systems (ADAS) or self-driving vehicles. The initial works on V2X focused on the exchange or delivery of short control messages to avoid collision, and did not consider the functionalities required for advanced connected cars. However, the use cases for advanced driving of eV2X, specified in TR 22.886, include various scenarios including media, such as video and sensor data. Although more advanced transmission capabilities are required, media can overcome the limitations of coded messages that might not be able to describe arbitrary situations on the road, and can be a more intuitive source of information for the decision of driver or artificial intelligence, e.g., by providing visual information that cannot be provided by the on-board cameras or sensors of vehicles with limited coverage or accuracy. Strong tolerance to the variance of weather is another advantage of media-based V2X that can exploit the point-to-point transmission or multicasting/broadcasting capability of 3GPP radio access.

In the present document, media-related use cases of V2X described in TR 22.886 and their requirements in TS 22.186 are analysed in detail, to clarify the operation of advanced driving using networked visual information. The required procedures for media capture, compression, and transmission, based on the mechanisms for media handling and transportation, such as MTSI, MBMS, and FLUS, are investigated. Operation over the PC5 interface is currently outside of the scope of this document.