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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.




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