Release ledger
Canonical Atlas record
TS 29.172
Location Services (LCS); Evolved Packet Core (EPC) LCS Protocol (ELP) between the Gateway Mobile Location Centre (GMLC) and the Mobile Management Entity (MME); SLg interface
Responsible WGC4
StatusUnder change control
Initial releaseRel-9
Selected releaseRel-12
Latest indexed version19.0.0
Series29
TypeTS
Release evolution
Compare evidence between releases
Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.
Rel-12 snapshot
Work affecting this release
23 indexed Change Requests · 2 connected Work Items.
Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0016 — Definition of Lgd interface between SGSN and GMLC (Section 1, 3, 4, 5)
CR 0016 rev.1 — Definition of Lgd interface between SGSN and GMLC (Section 1, 3, 4, 5)
CR 0017 — Definition of Lgd interface between SGSN and GMLC (Section 2, 6, 7)
CR 0017 rev.1 — Definition of Lgd interface between SGSN and GMLC (Section 2, 6, 7)
CR 0017 rev.2 — Definition of Lgd interface between SGSN and GMLC (Section 2, 6, 7)
CR 0018 — Support of deferred MT-LR and periodic MO-LR TTTP procedures over Lgd interface
CR 0018 rev.1 — Support of deferred MT-LR and periodic MO-LR TTTP procedures over Lgd interface
CR 0018 rev.2 — Support of deferred MT-LR and periodic MO-LR TTTP procedures over Lgd interface
CR 0019 — Addressing the editor's note of the Location-Event AVP
CR 0019 rev.1 — Addressing the editor's note of the Location-Event AVP
CR 0023 — Optimized LCS procedure between GMLC and combined MME/SGSN
CR 0023 rev.2 — Optimized LCS procedure between GMLC and combined MME/SGSN
Version history
Indexed versions
Showing 42 of 42 indexed versions.
19.0.0Rel-19SA#1092025-10-08
18.1.0Rel-18CT#1002023-06-23
18.0.0Rel-18CT#97-e2022-09-23
17.0.0Rel-17SA#95-e2022-04-01
16.1.0Rel-16CT#95-e2022-03-18
16.0.0Rel-16SA#88-e2020-07-08
15.2.0Rel-15CT#862019-12-20
14.3.0Rel-14CT#862019-12-20
13.2.0Rel-13CT#862019-12-20
12.6.0Rel-12CT#862019-12-20
15.1.0Rel-15CT#852019-09-18
15.0.0Rel-15SA#802018-06-23
14.2.0Rel-14CT#792018-03-27
14.1.0Rel-14CT#762017-06-19
14.0.0Rel-14CT#752017-03-16
13.1.0Rel-13CT#722016-06-22
13.0.0Rel-13CT#702016-01-06
9.6.0Rel-9CT#672015-03-19
12.5.0Rel-12CT#672015-03-19
11.2.0Rel-11CT#672015-03-19
10.3.0Rel-10CT#672015-03-19
12.4.0Rel-12CT#632014-03-10
12.3.0Rel-12CT#622013-12-17
9.5.0Rel-9CT#612013-09-19
12.2.0Rel-12CT#612013-09-19
11.1.0Rel-11CT#612013-09-19
10.2.0Rel-10CT#612013-09-19
12.1.0Rel-12CT#602013-06-24
12.0.0Rel-12CT#592013-03-13
11.0.0Rel-11SA#572012-09-28
10.1.0Rel-10CT#532011-09-26
9.4.0Rel-9CT#512011-04-06
10.0.0Rel-10SA#512011-04-06
9.3.0Rel-9CT#502010-12-22
9.2.0Rel-9CT#492010-09-28
9.1.0Rel-9CT#482010-06-17
9.0.0Rel-9CT#472010-04-06
2.0.0Rel-9 · pre-approvalCT#472010-03-19
1.0.0Rel-9 · pre-approvalCT#462009-12-12
0.3.0Rel-9 · pre-approval-2009-10-26
0.2.0Rel-9 · pre-approval-2009-09-09
0.1.0Rel-9 · pre-approval-2009-07-15
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TS 29.172
LCS_EPS-CPS
Rel-9officialCT4 aspects of Control Plane LCS in the EPC
TEI9
Rel-9parsed(Small) Technical Enhancements and Improvements for Rel-9
TEI10
Rel-10parsed(Small) Technical Enhancements and Improvements for Rel-10
TEI11
Rel-11parsed(Small) Technical Enhancements and Improvements for Rel-11
Dia_SGSN_GMLC
Rel-12officialDiameter based interface between SGSN-GMLC (Stage 3)
TEI12
Rel-12parsed(Small) Technical Enhancements and Improvements for Rel-12
TEI14
Rel-14parsed(Small) Technical Enhancements and Improvements for Rel-14
TEI16
Rel-16historical link(Small) Technical Enhancements and Improvements for Rel-16
Historical association · verification pending5G_eLCS_Ph3
Rel-18parsed5GC LoCation Services - Phase 3
TEI18
Rel-18parsed(Small) Technical Enhancements and Improvements for Rel-18
Knowledge graph
Related standards
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