Figure 7.7.2.2.1-1 illustrates the procedure with DAA support involving UAVs with U2X support.
Pre-conditions:
-
UAE server has provided the DAA application policy to the UAE client.
Step 1.
The UAE layer has, e.g. based on information provided by the U2X layer, detected UAVs in proximity, see
clause 5.6 of TS 23.256. The UAV informs its own UAS application specific server about the detected collision.
Step 2.
The UAE client shall send a DAA client event information to the UAE server with information about one or more UAVs in proximity as detected in step 1.
Step 3.
The UAE server shall record the DAA client event information with current timestamp. UAE server shall request UAE client location information from the SEAL location services. The UAE server shall record the received location information with current timestamp. The UAE server shall send the DAA client event information to the UAS application specific server.
Step 4.
The UAS application specific server provides a DAA client event information acknowledge to the UAE server. The UAS application specific server may include more information in the acknowledgement (e.g., other UAVs detected information by UAS application layer mechanisms).
Step 5.
The UAE server shall send a DAA client event information acknowledge to the UAE client, and the UAE client shall provide the application layer (i.e. UAS client) with the consolidated information from the UAS application specific server.
Figure 7.7.2.2.2-1 illustrates the procedure with DAA support involving UAVs without U2X support.
Pre-conditions:
-
UAS application specific server has provided DAA configuration parameters to the UAE client.
-
The UAV does not support U2X layer.
Step 1.
The UAS application specific server has received information about UAVs (e.g. via UAS application layer mechanism or as in step 3 of
clause 7.7.2.2.1. The UAS application specific server determines the information of the UAVs which may be in the proximity of the UAV.
Step 2.
The UAS application specific server sends a DAA server event information to the UAE server which includes information of other UAVs in the proximity of the UAV. The UAE server shall verify that the request is authorized before sending the DAA server event information to the UAE client.
Step 3.
The UAE server performs coordination with Real-Time UAV connection status monitoring and location reporting is performed by the UAE server, see
clause 7.5 and
clause 9.3 of TS 23.434. The UAE server shall send a DAA server event information to the UAE client comprising the UAVs information and location of each UAV in proximity of the UAV.
Step 4.
The UAE client shall send to the UAE server a DAA server event information acknowledge.
Step 5.
The UAE server shall send a DAA server event information acknowledge to the UAS application specific server.