ID:

AIXM-531

target version:

AIXM 5.2

version:

1.0

last updated:

08 AUG 2022

status:

APPROVED


Description

Direct associations are added from InformationService, AirTrafficControlService, AirTrafficManagementService, and SearchAndRescueService towards RouteSegment.

Rationale for change

See https://aixmccb.atlassian.net/browse/AIXM-378

In the AIXM 5.1, the relation between a Route and its Controlling Unit is quite complex, regarding the effective operational need for the AIP dataset in ENR 3.X: "Remarks, including an indication of the controlling unit and its operating frequency." (ENR 3.X, "Remarks'' column). Moreover, there is no direct relation between a RouteSegment and its Controlling Unit, knowing that all the RouteSegments of a Route won't always have the same Controlling Unit.

A processing must be done to relate a RoutePortion object (associated to a Route) with a RouteSegment, in order to provide the AIP information.

In order to simplify this situation, it is proposed to add a direct n..1 relation from a subset of concrete Service types to one or more RouteSegment.

Impact assessment

There is no impact on existing implementations as the current AIXM 5.1.(.1) data remains fully valid against AIXM 5.2. No values are removed from this list.

When receiving data from AIXM 5.2 implementations, current AIXM 5.1(.1) systems will have to be able to map back the new values, as described in the mapping rules further in this document.

Change Proposal details

In the UML model, add a new association as follows:

  • InformationService ‘isLocatedAt’ RouteSegment
    • .* on the InformationService side,
    • .* on the RouteSegment side, “clientRouteSegment” role name, definition = “The route segment for which the information is provided.”
  • AirTrafficManagementService ‘manages’ RouteSegment
    • .* on the AirTrafficManagementService side,
    • .* on the RouteSegment side, “clientRouteSegment” role name, definition = “The route segment for which the flight planning and air traffic flow management services is provided.”
  • AirTrafficControlService ‘controls’ RouteSegment
    • .* on the AirTrafficControlService side,
    • .* on the RouteSegment side, “clientRouteSegment” role name, definition = “The route segment for which the air traffic control is provided.”
  • SearchRescueService ‘services’ RouteSegment
    • .* on the SearchRescueService side,
    • .* on the RouteSegment side, “clientRouteSegment” role name, definition = “The route segment where the search and rescue service is provided.”

The following UML class diagram indicates the new associations:

Mapping AIXM 5.1.1 to AIXM 5.2 (forward)

Not applicable

Mapping AIXM 5.2 to AIXM 5.1.1 (backward)

The following algorithm shall be applied:

  • [MAPC-00] For each clientSegment child element of a InformationService, AirTrafficManagementService, AirTrafficControlService or SearchRescueService element:
    • retrieve the RouteSegment referenced through the xlink:href value of the clientSegment and then add a clientRoute child element with
      • xlink:href value equal to the RouteSegment.routeFormed.xlink:href value
      • EnRouteSegmentPoint.pointChoice_….xlink:href value value equal to the RouteSegment.start.EnRouteSegmentPoint.pointChoice_….xlink:href value
      • EnRouteSegmentPoint.pointChoice_….xlink:href value value equal to the RouteSegment.end.EnRouteSegmentPoint.pointChoice_….xlink:href value
    • remove the clientSegment element.

Mapping example

(Note: for mapping test data see: https://github.com/aixm/mapping_52_511/tree/master/AIXM-xxx) 

AIXM 5.2AIXM 5.1(.1)
<pre>
  ...</pre>






<pre>
...</pre>