4.9 SCEF – SCS/AS API Procedures

23.6823GPPArchitecture enhancements to facilitate communications with packet data networks and applicationsRelease 17TS

4.9.1 General

This clause identifies commonalities (for both parameters and procedures) found on T8 interface.

4.9.2 Common Parameters

This clause defines parameters which are required on T8 interface:

T8 Long Term Transaction Reference ID (TLTRI) is a parameter which refers to long term transaction (e.g. NIDD Configuration, Group Message Request, Monitoring Event configuration) between the SCEF and the SCS/AS when using T8 interface. Long term transactions consist of one or more request messages which may have one or more response messages. TLTRI is assigned by the SCEF and is unique through the duration of the transaction. It is stored on both the SCEF and the SCS/AS for the duration of the transaction.

NOTE 1: Short term transaction identifiers for the T8 interface are not described in this specification as stage 3 mechanisms (defined in TS 29.122 [44]) ensure the correlation between request and response message.

T8 Destination Address is a parameter that is included by the SCS/AS in T8 messages where the SCS/AS can request response to a specific address.

Accuracy is an optional parameter which indicates the desired level of accuracy of the requested location information. It may be at cell level (CGI/ECGI) for GPRS/UTRAN/E-UTRAN, or (eNodeB-ID) eNodeB level, or (TAI/RAI) TA/RA level, or (PLMN-ID) PLMN-level, or TWAN identifier in TWAN access, or other formats, e.g. shapes (e.g. polygons, circles, etc.) or civic addresses (e.g. streets, districts etc.) or geographic co-ordinate (latitude, longitude), etc.

NOTE 2: The exact definition of other formats such as shapes or civic addresses or geographic coordinate is left up to Stage 3.

Idle Status Indication is an optional parameter that allows the SCS/AS to retrieve extra information, e.g. as specified in step 5 of clause 5.6.3.3, when a UE, for which PSM or extended idle mode DRX is enabled, transitions into idle mode.

TLTRI for Deletion identifies the TLTRI of the long-term transaction being requested for deletion.