Definition
Functional Requirements
Syntax
Semantics
Conformance
Performance
1 Definition
A Message exchanged between the Human-CAV Interaction subsystem of an Ego CAV and that of a Remote CAV in range, carrying what their passengers exchange – a Request or a Response.
2 Functional Requirements
An Ego-Remote HCI Message shall contain exactly one of:
- A Request from the Ego CAV’s HCI to the Remote CAV’s HCI.
- A Response from the Remote CAV’s HCI to the Ego CAV’s HCI.
It is exchanged over the External transport of MPAI-AIF V3.0, between the Controllers of CAVs in range, signed and verified as the Ego-Remote AMS Message is. The reference software of CAV-TEC V2.0 declares it at the boundary of the CAV without exchanging it.
3 Syntax
https://schemas.mpai.community/CAV2/V2.0/data/EgoRemoteHCIMessage.json
4 Semantics
Table 1 specifies the semantics of the Ego-Remote HCI Message Data Type.
| Label | Type | Req. | Description |
|---|---|---|---|
| Header | string (CAV-ERH-V2.0) | Yes | Ego-Remote HCI Message Header – Standard CAV-ERH-Vx.y |
| MInstanceID | string | Identifier of the M-Instance (Virtual Space) associated with this Ego-Remote HCI Message. | |
| UEnvironmentID | string | Identifier of the U-Environment (Real Space) associated with this Ego-Remote HCI Message. | |
| EgoRemoteHCIMessageID | string | Yes | Unique identifier of this Ego-Remote HCI Message instance. |
| EgoRemoteHCIMessageTime | Simple Time | Time this Ego-Remote HCI Message was produced. | |
| EgoRemoteHCIMessageSpaceTime | Simple Time | Space/Time where/when this Ego-Remote HCI Message applies. | |
| EgoRemoteHCIMessage | object | Yes | Data of the Ego-Remote HCI Message; exactly one of Request or Response. |
| DataXMData | Data Exchange Metadata | MPAI-PTF Data Exchange Metadata providing provenance, authorisation, legal, security, and confidence information associated with this Ego-Remote HCI Message in a trusted data exchange context. | |
| DescrMetadata | string | Human-readable descriptive metadata of the Ego-Remote HCI Message (plain text, max 2048 characters). |
5 Conformance Testing
Data conform to the Ego-Remote HCI Message Data Type when they validate against its schema. If the schema references other schemas, data referencing a secondary schema shall also validate against that schema, if present, and conform with the Qualifier, if present.
