9.2b Common Positioning Procedure for Iu mode

3GPP43.059Functional stage 2 description of Location Services (LCS) in GERANRelease 17TS

This procedure is common to all positioning methods in the Iu mode.

Figure 28b:Common Positioning Procedure

1. The BSC sends the BSSAP-LE Perform Location Request message to request the SMLC to start the positioning procedure.

2. See step 2 of Clause 9.2 "Common Positioning Procedure for CS Domain in A/Gb Mode."

3. The SMLC sends the BSSAP-LE Perform Location Response message to the BSC containing any location estimate (with optional velocity estimate) or deciphering keys. In case of failure the cause value may be included.