Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment
1 Definition
An Interaction is a message exchanged between functional components to request or convey Route, Path, or Trajectory information. It includes contextual identifiers and one element representing either a request or a response associated with routing operations.
2 Functional Requirements
An Interaction shall include one and only one of the following elements: RouteRequest, RouteResponse, PathRequest, PathResponse, TrajectoryRequest, or TrajectoryResponse.
If an Interaction contains:
- a RouteRequest, PathRequest, or TrajectoryRequest, it represents a request;
- a RouteResponse, PathResponse, or TrajectoryResponse, it represents a response.
An Interaction shall include a Header and may include identifiers, timestamps, an Offline Map identifier, data exchange metadata, and descriptive metadata.
3 Syntax
https://schemas.mpai.community/CAV2/V1.1/data/Interaction.json
4 Semantics
| Header | Interaction Header – Standard “CAV‑INT‑Vx.y”. |
| MInstanceID | Identifier of the M-Instance (Virtual Space) associated with this Interaction. |
| UEnvironmentID | Identifier of the U-Environment (Real Space) associated with this Interaction. |
| InteractionID | Unique identifier of this Interaction instance. |
| InteractionTime | Time this Interaction was produced. |
| InteractionSpaceTime | Space/Time where/when this Interaction applies. |
| RouteRequest | Request trigger for a new Route. |
| RouteResponse | Route provided in response to a Route Request. |
| PathRequest | Request trigger for a new Path. |
| PathResponse | Path provided in response to a Path Request. |
| TrajectoryRequest | Request trigger for a new Trajectory. |
| TrajectoryResponse | Trajectory provided in response to a Trajectory Request. |
| DataXMData | MPAI-PTF Data Exchange Metadata providing provenance, authorisation, legal, security, and confidence information associated with this Interaction in a trusted data exchange context. |
| DescrMetadata | Human-readable descriptive metadata of the Interaction (plain text, max 2048 characters). |
5 Conformance Testing
A Data instance conforms with Interaction (CAV‑INT) if:
- The Data validates against the Interaction’s JSON Schema.
- All Data in the Interaction’s JSON Schema:
- Have the specified type.
- Validate against their JSON Schemas.
- Conform with their Data Qualifiers.
6 Performance Assessment
Not part of this specification.
