Space Link Extension - Service Management - CCSDS

DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT
NOTE – Submission of trajectory data occurs on the order of months, days or minutes
in advance of the support period to which the trajectory data applies.
b) DELETE_TRAJECTORY_PREDICTION (DTP)—to delete a Trajectory Prediction
that currently resides at CM;
c) QUERY_TRAJECTORY_PREDICTION (QTP)—to query the content of a
Trajectory Prediction that resides at CM.
No Trajectory Prediction operations can be performed by UM.
2.2.5.1 Storage Area at CM
UM is responsible for managing the Trajectory Predictions resident at CM. UM must keep
track of the expiration dates for the Trajectory Predictions and add and delete as necessary.
CM will not notify UM when Trajectory Predictions resident at CM expire.
There is a limited amount of storage space available at CM for Trajectory Predictions. The
maximum allowed storage area is defined in the applicable Service Agreement. CM will
reject new Trajectory Predictions once this storage space is exceeded.
2.2.5.2 Trajectory Prediction Validation
When UM requests the addition of a new Trajectory Prediction, the validation performed by
CM is limited, i.e., checking of storage space available at CM, sanity checking of time
window, conformance to indicated format, uniqueness of Trajectory Prediction identifier.
Further locally-defined checks may be performed by CM as part of the validation of a
Service Package that references the Trajectory Prediction.
Requests for deletion of Trajectory Predictions that are referenced by pending or executing
Service Packages will be rejected.
To allow UM to keep track of referenced Trajectory Predictions, the
QUERY_TRAJECTORY_PREDICTION operation returns the list of pending or executing
Service Packages that reference the queried Trajectory Prediction.
2.2.6 SERVICE AGREEMENT SERVICE
The negotiation and generation of the Service Agreement are beyond the scope of this
Recommended Standard. For this reason, there is only one Service Agreement operation that
CM can perform when invoked by UM:
QUERY_SERVICE_AGREEMENT (QSA)—to query the content of a Service
Agreement that resides at CM. The QSA operation has been defined to support the
return of Service Agreement data either in the format defined in this Recommended
Standard or in a bilaterally agreed format.
No Service Agreement operations can be performed by UM.
CCSDS 910.11-R-2 Page 2-13 March 2008