4.9.29 Test Procedure for eCall over IMS establishment in 5GS: eCall Only Support

38.508-13GPP5GSPart 1: Common test environmentRelease 17TSUser Equipment (UE) conformance specification

4.9.29.1 Scope

The purpose of this test procedure is to allow successful completion of eCall over IMS in 5GS when UE is in 5GMM-DEREGISTERED.eCALL-INACTIVE.

The test procedure is applicable for UEs with eCall over IMS support.

Note: The trigger to initiate MO call will be part of test case from where the generic procedure is called.

4.9.29.2 Procedure description

4.9.29.2.1 Initial conditions

System Simulator:

– 1 NR Cell connected to 5GC, default parameters.

User Equipment:

– The Test UICC shall be inserted. It shall provide Emergency Numbers.

The test procedure assumes that the UE is in test state 0-A, subclause 4.4A.2 on the NR Cell. All necessary details required shall be explicitly specified in the TC which calls the procedure in its entirety or refers to parts of it.

4.9.29.2.2 Procedure sequence

The establishment of eCall over IMS in 5GS is assumed to always be mobile originated.

Table 4.9.29.2.2-1: Test procedure sequence for eCall over IMS Emergency establishment in 5GS (eCall Only Support)

St

Procedure

Message Sequence

TP

Verdict

U – S

Message/PDU/SDU

–

EXCEPTION: Unless otherwise stated all the messages below are transmitted on the cell specified in the test case.

–

–

–

–

1

The UE is switched on and SS waits 15 sec to allow the UE to camp on the serving cell and enter and remain in substate 5GMM-DEREGISTERED.eCALL-INACTIVE

–

–

–

–

2

Make the UE attempt an eCall (Note)

–

–

–

–

3-20

Steps 2 to 19 of generic procedure 4.5.2.2-2 takes place.

–

–

–

–

21-26

Steps 8 to 13 of test procedure 4.9.11 takes place with condition ‘eCall’.

–

–

–

–

Note: The request to originate a manual or Automatic eCall may be performed by MMI or AT command

4.9.29.2.3 Specific Message content

All specific message contents shall be according to subclause 4.6 and 4.7 with the exceptions below.

Table 4.9.29.2.3-1: SIB1 (at any time prior and during the procedure, Table 4.9.29.2.2-1)

Derivation Path: Table 4.6.1-28.

Information Element

Value/remark

Comment

Condition

SIB1 ::= SEQUENCE {

ims-EmergencySupport

Present

true

}