3GPP51.010-7Mobile Station (MS) conformance specificationPart 7: Location Services (LCS) test scenarios and assistance dataRelease 12TS
The following subclauses define the GPS and GNSS orbital model information, the assistance data and the assistance data files for the test cases defined in TS 51.010-1  subclauses 70.7 to 70.9 for A-GPS Signalling test cases, subclauses 70.13 to 70.15 for A-GNSS Signalling test cases, subclause 70.11 for A-GPS Minimum Performance test cases and subclause 70.16 for A-GNSS Minimum Performance test cases.
The orbital model information is defined and where appropriate is given in Yuma format in .txt files for each scenario in the appropriate data file defined in Annex A or Annex B.
Where the assistance data is fixed or is not required on a per-satellite basis, then it is defined in the following subclauses. Where assistance data is required on a per-satellite basis, or where the values of the data also vary with time then it is specified in comma-separated-variable files in the appropriate data file defined in Annex A or Annex B. These files specify the values to be used for each satellite, indexed by satellite PRN or SV ID, and, where applicable, the values to be used indexed by both time and satellite PRN or SV ID.
All the Assistance Data information elements are given with reference to TS 44.031 , where the details are defined.