TS 23.171
Location Services (LCS)
V3.11.0 (PDF)
2004/04 55 p.
- Rapporteur:
- Mr. Wong, Gavin
replaced by: TS 23.271 from Rel-4
full Table of Contents for TS 23.171 PDF version: 3.11.0
1 Scope p. 7
2 References p. 7
3 Definitions and abbreviations p. 8
4 Main concepts p. 12
4.1 Location services in UMTS Release 1999 p. 12
4.2 Assumptions p. 12
4.3 Location Services Categories p. 13
4.4 Positioning methods p. 13
4.5 Location information sources, network interaction p. 14
5 General LCS architecture p. 14
5.1 LCS access interfaces and reference points p. 14
5.2 LCS Functional diagram, high level functions p. 15
5.3 LCS Client functional group p. 16
5.3.1 External Location Client Function (LCF) p. 16
5.3.2 Internal Location Client Function (U-LCF) p. 16
5.4 LCS Server functional group in UMTS p. 16
5.4.1 Client handling component p. 16
5.4.1.1 Location Client Control Function (LCCF) p. 16
5.4.1.2 Location Client Authorization Function (LCAF) p. 16
5.4.1.3 Location Client Co-ordinate Transformation Function (LCCTF) p. 17
5.4.1.4 Location Client Zone Transformation Function (LCZTF) p. 17
5.4.2 System handling component p. 17
5.4.2.1 Location System Control Function in general (LSCF) p. 17
5.4.2.2 Access Network Location System Control Function(U-LSCF) p. 18
5.4.2.3 Location System Billing Function (LSBF) p. 18
5.4.2.4 Location System Operations Function (LSOF) p. 18
5.4.2.5 Location System Broadcast Function (LSBcF) p. 18
5.4.3 Subscriber handling Component p. 18
5.4.3.1 Location Subscriber Authorization Function (LSAF) p. 18
5.4.3.2 Location Subscriber Privacy Function (LSPF) p. 18
5.4.4 Positioning components p. 18
5.5 Information Flows between Client and Server p. 19
6 UMTS LCS Architecture p. 19
6.1 Schematic functional description of LCS operations in UMTS p. 20
6.2 Allocation of LCS functions to UMTS network elements p. 21
6.3 Functional description of LCS per network element p. 24
6.3.1 Access Network p. 24
6.3.2 LCS Clients and LCS applications p. 24
6.3.3 Gateway Mobile Location Center, GMLC p. 24
6.3.4 Serving RNC, UTRAN case p. 24
6.3.5 Void
6.3.6 LMU p. 24
6.3.7 3G-MSC/VLR p. 24
6.3.8 Void
6.3.9 Home Location Register, HLR p. 24
6.3.10 gsmSCF p. 25
6.4 Addressing the target UE for LCS purposes p. 25
7 Signaling Protocols and Interfaces p. 25
7.1 Signalling protocols for LCS support in UMTS p. 25
7.1.1 Protocol layering p. 25
7.2 Iu interface p. 25
7.3 Uu Interface p. 26
7.4 MAP Interfaces p. 26
8 General network location procedures p. 27
8.1 State description for GMLC p. 27
8.1.1 GMLC states p. 27
8.1.2 State functionality p. 27
8.2 State description for 3G-VMSC/VLR p. 28
8.2.1 3G-VMSC States p. 28
8.2.1.1 LCS IDLE State p. 28
8.2.1.2 LOCATION State p. 28
8.2.2 State Functionality p. 29
8.3 Void
8.4 State description for RNC in UTRAN p. 29
8.5 Iu Signaling Connection p. 29
8.6 General Network Positioning Procedures p. 30
8.7 Mobile Terminating Location Request p. 30
8.7.1 Circuit Switched Mobile Terminating Location Request (CS-MT-LR) p. 30
8.7.1.1 Location Preparation Procedure p. 31
8.7.1.2 Positioning Measurement Establishment Procedure p. 32
8.7.1.3 Location Calculation and Release Procedure p. 33
8.7.1a MT-LR without HLR Query - applicable to North America Emergency Calls only p. 33
8.7.2 MT-LR and PS-MT-LR for a previously obtained location estimate p. 34
8.7.2.1 Initial Location p. 35
8.7.2.2 Current Location p. 35
8.7.2.3 Last known Location p. 35
8.7.2.4 Security and Privacy p. 35
8.7.2.5 Failing to locate the target UE p. 35
8.7.3 Network Induced Location Request (NI-LR) p. 36
8.7.3.1 Location Preparation Procedure p. 36
8.7.3.2 Positioning Measurement Establishment Procedure p. 37
8.7.3.3 Location Calculation and Release Procedure p. 37
8.7.3A NI-LR using Location Based Routing - applicable to North American Emergency Calls only p. 38
8.7.3A.1 Location Preparation Procedure p. 39
8.7.3A.2 Positioning Measurement Establishment Procedure p. 39
8.7.3A.3 Location Calculation and Release Procedure p. 39
8.7.3A.4 Location Preparation Procedure p. 39
8.7.3A.5 Positioning Measurement Establishment Procedure p. 39
8.7.3A.6 Location Calculation and Release Procedure p. 39
8.7.4 Network Induced Location Request (NI-LR and PS-NI-LR) from a Serving RNC for a target UE in dedicated mode p. 40
8.7.4.1 Location Preparation Procedure p. 40
8.7.4.2 Positioning Measurement Establishment Procedure p. 40
8.7.4.3 Location Calculation and Release Procedure p. 40
8.7.5 Void
8.8 Mobile Originating Location Request p. 41
8.8.1 Mobile Originating Location Request, Circuit Switched (CS-MO-LR) p. 41
8.8.1.1 Location Preparation Procedure p. 41
8.8.1.2 Positioning Measurement Establishment Procedure p. 42
8.8.1.3 Location Calculation and Release Procedure p. 42
8.8.2 Void
8.9 LCS signaling procedures specified in UTRAN Stage 2, TS 35.305 p. 43
8.10 Exception Procedures p. 43
8.11 Privacy p. 44
8.11.1 Privacy Override Indicator (POI) p. 44
8.11.2 Privacy Procedures p. 44
8.11.3 UE Privacy Options p. 45
8.12 Mobile Originating Location p. 47
8.13 CM Procedures p. 47
9 Information storage p. 47
10 Operational Aspects p. 51
A Privacy class selection rule p. 52
B Change history p. 53
