TS 29.172 – EPC LCS Protocol (ELP) specification
3GPP TS 29.172 is the 3GPP Technical Specification for EPC LCS Protocol (ELP) specification. It is published in 11 releases (Rel-9 to Rel-19); the latest version is 19.0.0 in Rel-19.
Specifies EPC LCS Protocol (ELP) for location services in E-UTRAN, UTRAN, GERAN. Defines SLg (MME-GMLC) and Lgd (SGSN-GMLC) interfaces.
Releases and versions of TS 29.172
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.1.0 | Read · Download (3GPP) |
| Rel-17 | 17.0.0 | Read · Download (3GPP) |
| Rel-16 | 16.1.0 | Read · Download (3GPP) |
| Rel-15 | 15.2.0 | Read · Download (3GPP) |
| Rel-14 | 14.3.0 | Read · Download (3GPP) |
| Rel-13 | 13.2.0 | Read · Download (3GPP) |
| Rel-12 | 12.6.0 | Read · Download (3GPP) |
| Rel-11 | 11.2.0 | Read · Download (3GPP) |
| Rel-10 | 10.3.0 | Read · Download (3GPP) |
| Rel-9 | 9.6.0 | Read · Download (3GPP) |
Scope of TS 29.172
Category: Core Network (Location Services). Technology generation: Multi-Gen. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 29.172
- TS 32.299 Diameter Charging Applications for 3GPP
- TS 29.272 MME and SGSN Diameter interfaces to HSS/CSS/EIR
- TS 29.329 Diameter Protocol for Sh Interface
- TS 33.210 Network Domain Security for IP Networks
- TS 22.071 Location Services (LCS) Stage 1
- TS 29.229 Diameter Protocol for Cx/Dx Interfaces
- TS 29.173 Diameter-based SLh Interface for LCS
- TS 29.002 Mobile Application Part (MAP) Specification
- TR 21.905 3GPP Terminology and Definitions
- TS 49.031 BSSAP LCS Extension (BSSAP-LE) Specification
- TS 25.413 Radio Access Network Application Part (RANAP)
- TS 24.080 Supplementary Services Formats and Coding
Specifications that reference TS 29.172
Other specifications in the 29 series
- TS 29.164 CS-LTE Interworking with SIP-I, BICC, ISUP
- TS 29.165 Inter-IMS Network-to-Network Interface (II-NNI)
- TS 29.168 SBc-AP Protocol Specification
- TS 29.171 LCS-AP between MME and E-SMLC (SLs)
- TS 29.173 Diameter-based SLh Interface for LCS
- TS 29.175 Nimsas Service Based Interface for IMS AS
- TS 29.176 Nmf Media Resource Management Service
- TS 29.198-01 OSA API Overview and Structure
Related glossary terms
Related topics
Related technologies
Frequently asked questions
What is 3GPP TS 29.172?
3GPP TS 29.172 is the 3GPP Technical Specification for EPC LCS Protocol (ELP) specification. Specifies EPC LCS Protocol (ELP) for location services in E-UTRAN, UTRAN, GERAN. Defines SLg (MME-GMLC) and Lgd (SGSN-GMLC) interfaces.
Which 3GPP releases include TS 29.172?
TS 29.172 is published in 11 releases, from Rel-9 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TS 29.172 belong to?
TS 29.172 belongs to the Core Network (Location Services) category of 3GPP specifications. It applies to Multi-Gen networks.
View the full specification with interactive table of contents, version history, and AI analysis.
Read Full Specification →