B.4 E-UTRAN and NR UE measurement reports
37.571-13GPPPart 1: Conformance test specificationRelease 16TSUser Equipment (UE) conformance specification for UE positioning
In case of E-UTRAN and NR UE-assisted A-GNSS, the measurement parameters are contained in the LPP GNSS- SignalMeasurementInformation IE (clause 6.5.2.6 in 3GPP TS 36.355 [4] and 3GPP TS 37.355 [49]). The measurement parameters required for calculating the UE position are:
1) Reference Time: The UE has two choices for the Reference Time:
a) "networkTime";
b) "gnss-TOD-msec".
2) Measurement Parameters for each GNSS and GNSS signal: 1 to 64:
a) " svID";
b) "codePhase";
c) "integerCodePhase";
d) "codePhaseRMSError".
Additional information required at the system simulator:
1) "GNSS-ReferenceLocation" (clause 6.5.2.2 in 3GPP TS 36.355 [4] and 3GPP TS 37.355 [49]):
Used for initial approximate receiver coordinates.
2) "GNSS-NavigationModel" (clause 6.5.2.2 in 3GPP TS 36.355 [4] and 3GPP TS 37.355 [49]):
Contains the GNSS ephemeris and clock correction parameters as specified in the relevant ICD of each supported GNSS; used for calculating the satellite positions and clock corrections.
3) "GNSS-IonosphericModel" (clause 6.5.2.2 in 3GPP TS 36.355 [4] and 3GPP TS 37.355 [49]):
Contains the ionospheric parameters which allow the single frequency user to utilize the ionospheric model as specified in the relevant ICD of each supported GNSS [8], [14], [15] and [37] for computation of the ionospheric delay.