Page 58 - Use cases and requirements for the vehicular multimedia networks - Focus Group on Vehicular Multimedia (FG-VM)
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VDDM-4: If the vehicle generates VDDM, the vehicle shall collect the necessary information by
communicating with surrounding domain actors and scanning result of equipped sensors.
NOTE 4 – Domain actors are traffic participants, such as vehicles, bikes, walkers and other movable bodies
on the road.
VDDM-5: If the vehicle generates VDDM, the vehicle shall collect the necessary information by
communication from both domain actors and scanning results from domain sensors.
NOTE 5 – Domain sensor is one of the domain actors such as the vehicle equipped with sensors scanning
surrounding traffic situation, which reports sensor output.
VDDM-6: If the vehicle generates VDDM, the static road situation part shall be generated from sensor
output or a combination of sensor output and downloaded high definition map.
NOTE 6 – High definition map only defines the permanent status of the road.
NOTE 7 – The temporary situation part of static road situation is given by sensor output.
VDDM-7: If the vehicle is applied with VDDM, the master vehicle shall report the generated VDDM
to other domain actors and VDDM collecting servers.
NOTE 8 – The format of the report and its communication interfaces are unified between domain actors and
data collecting servers.
NOTE 9 – Sending and receiving of the VDDM report is performed in aligning to VDS communication
requirements.
NOTE 10 – The format of the report may contain multiple sensor data which can be sent in a compressed
format to reduce bandwidth consumption. ISO/IEC 23090-9 compresses point cloud scene/maps.
VDDM-8: If the vehicle is applied with VDDM, the master vehicle shall share the received VDDM
report and utilize it as the basis of the next generation of VDDM.
NOTE 11 – Details of sharing method are addressed to ISO 23239 series documents.
[ISO 23239] is drafted in ISO TC 22/SC 31/WG 8. It will be harmonized with ITU-T SG16.
If the vehicle communicates with domain actors for applying vehicle domain service (VDS), the
following requirements shall be applied.
VDS-1: If the vehicle uses VDS, it shall communicate with surrounding domain actors of various
types in order to collect information.
NOTE 12 – Basic types of domain actors are domain vehicle, domain participant and domain sensor.
NOTE 13 – Domain vehicle includes various types of road vehicles such as consumer (driving) vehicle, taxi,
sharing car, logistics trucks, public bus and tram.
VDS-2: The communication interface such as messages, protocols, data link layer and physical layer
shall be unified for the various types of domain actors.
For the minimum treatment to integrate a lot of responses from various actors, unified message format
definition and sequences are important features.
NOTE 14 – Different data container is required for each type of actor in order to treat various responses with
the same message format.
VDS-3: If the vehicle uses VDS, the appropriate security at the right level shall be applied on the
communication channel among VDS.
NOTE 15 – Part of the latest security specifications used in Internet communication will be enough for VDS
communication.
VDS-4: Privacy relevant and personal traceable information shall be contained in VDS messages.
NOTE 16 – Personal private information might be managed in totally separate methods and location from
VDS in order to respond to supervised requests such as government or police level.
48 FGVM-01R1 (2019)