TS 29.172 — Evolved Packet Core LCS Protocol (ELP) between GMLC and MME (SLg)⚓︎
Release: Rel 14 · Version assessed: 14.2.0 · Network: 4G · Applies to: MME · Interfaces: SLg
Optional capability, configured on request
The network function software implements this specification, and the statement below records that implementation. An Expeto deployment does not configure this capability by default and the acceptance test catalog does not cover it. If your deployment needs any part of it, contact Expeto Product Support: enabling it is configuration work that Expeto scopes and carries out with you.
Mandatory items: 43, of which 43 supported. A further 69 clauses of the specification carry no conformance requirement and are not listed.
Mandatory items⚓︎
| Ref. | Item | Status | Support | Remarks |
|---|---|---|---|---|
| 6.2 | Provide Subscriber Location | Mandatory | Supported | |
| 6.2.1 | General | Mandatory | Supported | |
| 6.2.2 | Successful Operation | Mandatory | Supported | |
| 6.2.3 | Unsuccessful Operation | Mandatory | Supported | |
| 7.0 | ELP Messages and Message Formats | Mandatory | Supported | |
| 7.1 | General | Mandatory | Supported | |
| 7.2 | Message Formats | Mandatory | Supported | |
| 7.3.1 | Provide-Location-Request (PLR) Command | Mandatory | Supported | |
| 7.3.2 | Provide-Location-Answer (PLA) Command | Mandatory | Supported | |
| 7.4.2 | Location-Type | Mandatory | Supported | CURRENT_LOCATION, CURRENT_OR_LAST_KNOWN_LOCATION, INITIAL_LOCATION, ACTIVATE_DEFERRED_LOCATION, CANCEL_DEFERRED_LOCATION and NOTIFICATION_VERIFICATION_ONLY are decoded. |
| 7.4.3 | LCS-EPS-Client-Name | Mandatory | Supported | |
| 7.4.4 | LCS-Requestor-Name | Mandatory | Supported | |
| 7.4.5 | LCS-Priority | Mandatory | Supported | |
| 7.4.6 | LCS-QoS | Mandatory | Supported | |
| 7.4.7 | Horizontal-Accuracy | Mandatory | Supported | |
| 7.4.8 | Vertical-Accuracy | Mandatory | Supported | |
| 7.4.9 | Vertical-Requested | Mandatory | Supported | |
| 7.4.10 | Velocity-Requested | Mandatory | Supported | |
| 7.4.11 | Response-Time | Mandatory | Supported | |
| 7.4.12 | Supported-GAD-Shapes | Mandatory | Supported | |
| 7.4.13 | LCS-Codeword | Mandatory | Supported | |
| 7.4.14 | LCS-Privacy-Check | Mandatory | Supported | |
| 7.4.16 | Age-Of-Location-Estimate | Mandatory | Supported | |
| 7.4.17 | Velocity-Estimate | Mandatory | Supported | |
| 7.4.18 | EUTRAN-Positioning-Data | Mandatory | Supported | |
| 7.4.19 | ECGI | Mandatory | Supported | |
| 7.4.20 | Location-Event | Mandatory | Supported | |
| 7.4.22 | LCS-Service-Type-ID | Mandatory | Supported | |
| 7.4.23 | LCS-Privacy-Check-Non-Session | Mandatory | Supported | |
| 7.4.24 | LCS-Privacy-Check-Session | Mandatory | Supported | |
| 7.4.27 | LCS-QoS-Class | Mandatory | Supported | |
| 7.4.28 | Serving-Node | Mandatory | Supported | |
| 7.5 | Result-Code AVP and Experimental-Result AVP Values | Mandatory | Supported | |
| 7.5.1 | General | Mandatory | Supported | |
| 7.5.2 | Success | Mandatory | Supported | |
| 7.5.3 | Permanent Failures | Mandatory | Supported | |
| 7.5.3.1 | DIAMETER_ERROR_USER_UNKNOWN (5001) | Mandatory | Supported | |
| 7.5.4 | Transient Failures | Mandatory | Supported | |
| 7.5.4.1 | DIAMETER_ERROR_UNREACHABLE_USER (4221) | Mandatory | Supported | |
| 7.5.4.3 | DIAMETER_ERROR_DETACHED_USER (4223) | Mandatory | Supported | |
| 7.5.4.4 | DIAMETER_ERROR_POSITIONING_DENIED (4224) | Mandatory | Supported | |
| 7.5.4.5 | DIAMETER_ERROR_POSITIONING_FAILED (4225) | Mandatory | Supported | |
| 7.5.4.6 | DIAMETER_ERROR_UNKNOWN_UNREACHABLE LCS_CLIENT (4226) | Mandatory | Supported |
Optional items⚓︎
The specification leaves these 8 items to the implementation; 6 are supported or partially supported. An item marked Not applicable belongs to an area the platform does not provide, named in the Support column. Expand for the full list.
8 optional items
| Ref. | Item | Support | Remarks |
|---|---|---|---|
| 7.3.3 | Location-Report-Request (LRR) Command | Supported | |
| 7.3.4 | Location-Report-Answer (LRA) Command | Supported | |
| 7.4.15 | Accuracy-Fulfilment-Indicator | Supported | |
| 7.4.21 | Pseudonym-Indicator | Supported | |
| 7.4.25 | Feature-List-ID | Supported | |
| 7.4.26 | Feature-List | Supported | |
| 7.5.3.2 | DIAMETER_ERROR_UNAUTHORIZED_REQUESTING_NETWORK (5490) | Not supported | |
| 7.5.4.2 | DIAMETER_ERROR_SUSPENDED_USER (4222) | Not supported |
Assessed 2026-09-15 against TS 29.172 version 14.2.0.