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Core network aspects 1

5) While the end user moves to the DAN elements on the path, the user is able to receive the NDOs
required for automated driving.

Figure 7-8 is a procedural diagram of DAN functions for automated driving service.

Figure 7-8 – Use case of automated driving with DAN
1) The end user sends the service provider a request for interactive data, e.g., position and traffic
NDOs, together with an expected route for automated driving.
2) The service provider informs all related DAN elements about the arrival of the authenticated vehicle
and requests interactive NDOs with the vehicle for its automated driving (labelled 2-1 in Figure 7-8).
The service provider offers the DAN elements (WAPs) its public key, which authorizes the DAN
elements to serve the requested NDOs.
3) Then the updated NDO is pushed to the DAN element from its connected sensors or newly pass
through vehicles if some special events occur, e.g., an accident or traffic jam. In other words,
updated NDOs may be uploaded by sensors or taken from new state information from in-vehicle
devices close to the DAN elements. Therefore, the updated NDO is available in DAN elements for
automated driving support (2-2).
4) The DAN element provides the end user with the desired NDO interactively when the end user
passes through the respective DAN element on a road. The NDO may be processed before being
served, in order to fit the capability of the end user's in-vehicle device.

7.4.1 Benefits
In order to detect hidden objects beyond a sightline, e.g., a child running around a corner or a car pulling out
of an occluded driveway, an automated vehicle can communicate with static infrastructure, such as sensors
on the road, which is connected to DAN elements (e.g., WAPs), or even with other vehicles in the vicinity. For
vehicular ad-hoc networks used in current communication between vehicles, it is necessary to identify their
locations based on the Internet protocol (IP). However, for efficient automated capability, the whole
communication system should focus on accessing content (rather than a particular destination) that can be
supported by DAN.
The user of automated driving can benefit from DAN due to its simple method of uploading and accessing an
NDO via sensors. The automated vehicle only needs to specify the name or ID of the sensor data and send
them to a connected DAN element, regardless of the final destination of the sensor data. The user of sensor
data does not need to specify the location or address of the DAN elements. The service provider and network

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