TS 29.118 — MME – VLR SGs interface specification⚓︎
Release: Rel 15 · Version assessed: 15.2.0 · Network: 4G · Applies to: MME · Interfaces: SGs
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: 37, of which 37 supported. A further 239 clauses of the specification carry no conformance requirement and are not listed.
Mandatory items⚓︎
| Ref. | Item | Status | Support | Remarks |
|---|---|---|---|---|
| 5.2.2.1 | General | Mandatory | Supported | |
| 5.2.2.2 | Location update initiation | Mandatory | Supported | |
| 5.2.2.3 | Location update response | Mandatory | Supported | |
| 5.2.2.4 | Location update failure | Mandatory | Supported | |
| 5.2.2.5 | Abnormal cases | Mandatory | Supported | |
| 5.4.1 | General description | Mandatory | Supported | |
| 5.4.2 | Procedures in the MME | Mandatory | Supported | |
| 5.4.2.1 | Explicit EPS detach initiation | Mandatory | Supported | |
| 5.4.2.2 | Explicit EPS detach response | Mandatory | Supported | |
| 5.6.1 | General description | Mandatory | Supported | |
| 5.6.2 | Procedures in the MME | Mandatory | Supported | |
| 5.11.2 | Uplink unitdata procedure | Mandatory | Supported | MT/MO SMS in idle mode is not supported. |
| 5.11.2.1 | Procedures in the MME | Mandatory | Supported | |
| 5.11.3.2.1 | General description | Mandatory | Supported | |
| 6.2 | IP layer | Mandatory | Supported | |
| 6.3 | Transport layer | Mandatory | Supported | |
| 8.4 | SGsAP-DOWNLINK-UNITDATA message | Mandatory | Supported | MT SMS in idle mode is not supported. |
| 8.5 | SGsAP-EPS-DETACH-ACK message | Mandatory | Supported | |
| 8.6 | SGsAP-EPS-DETACH-INDICATION message | Mandatory | Supported | |
| 8.9 | SGsAP-LOCATION-UPDATE-ACCEPT message | Mandatory | Supported | |
| 8.9.1 | Message definition | Mandatory | Supported | |
| 8.9.2 | New TMSI, or IMSI | Mandatory | Supported | |
| 8.10 | SGsAP-LOCATION-UPDATE-REJECT message | Mandatory | Supported | |
| 8.10.1 | Message definition | Mandatory | Supported | |
| 8.10.2 | Location area identifier | Mandatory | Supported | |
| 8.11 | SGsAP-LOCATION-UPDATE-REQUEST message | Mandatory | Supported | |
| 8.11.1 | Message definition | Mandatory | Supported | |
| 8.11.5 | TAI | Mandatory | Supported | |
| 8.11.6 | E-CGI | Mandatory | Supported | |
| 8.13 | SGsAP-PAGING-REJECT message | Mandatory | Supported | |
| 8.14 | SGsAP-PAGING-REQUEST message | Mandatory | Supported | |
| 8.17 | SGsAP-SERVICE-REQUEST message | Mandatory | Supported | |
| 8.17.5 | TAI | Mandatory | Supported | |
| 8.17.7 | UE EMM Mode | Mandatory | Supported | |
| 8.21 | SGsAP-UE-UNREACHABLE message | Mandatory | Supported | |
| 8.22.1 | Message definition | Mandatory | Supported | |
| 8.22.5 | TAI | Mandatory | Supported |
Optional items⚓︎
The specification leaves these 3 items to the implementation; 0 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.
3 optional items
| Ref. | Item | Support | Remarks |
|---|---|---|---|
| 8.11.4 | IMEISV | Not supported | |
| 8.22.2 | IMEISV | Not supported | |
| 8.22.3 | UE Time Zone | Not supported |
Assessed 2026-09-15 against TS 29.118 version 15.2.0.