7.1.4 Off-network / Group Call / MCPTT User Acknowledgement Required / With Confirm Indication / MCPTT User Reject / MCPTT User Accept / Client Terminated (CT)
36.579-23GPPMission Critical (MC) services over LTEPart 2: Mission Critical Push To Talk (MCPTT) User Equipment (UE) Protocol conformance specificationRelease 15TS
7.1.4.1 Test Purpose (TP)
(1)
with { UE (MCPTT Client) registered and authorised for MCPTT Service, including authorised to receive group calls in off-network environment, and the UE (MCPTT Client) is configured such that user acknowledgement is required upon a terminating call request reception, and the UE (MCPTT Client) is in an off-network environment }
ensure that {
when { the UE (MCPTT Client) receives an off-network group call request via a GROUP CALL ANNOUNCEMENT message, and the MCPTT User accepts the call}
then { the UE (MCPTT Client) accepts the call and sends a GROUP CALL ACCEPT message }
}
7.1.4.2 Conformance requirements
References: The conformance requirements covered in the current TC are specified in: TS 24.379 clauses 10.2.2.4.3.3, 10.2.2.4.3.7, 10.2.2.4.3.4. Unless otherwise stated these are Rel-13 requirements.
[TS 24.379, clause 10.2.2.4.3.3]
When in the "S1: start-stop" state, upon receiving a GROUP CALL ANNOUNCEMENT message with the MCPTT group ID IE not matching MCPTT group ID of the call stored for other state machines, the MCPTT client:
1) shall store the value of the SDP IE of the GROUP CALL ANNOUNCEMENT message as the SDP body of the call;
2) shall store the value of the Call identifier IE of the GROUP CALL ANNOUNCEMENT message as the call identifier of the call;
3) shall store the value of the Originating MCPTT user ID IE of the GROUP CALL ANNOUNCEMENT message as the originating MCPTT user ID of the call;
4) shall store the value of the Refresh interval IE of the GROUP CALL ANNOUNCEMENT message as the refresh interval of the call;
5) shall store the value of the MCPTT group ID IE of the GROUP CALL ANNOUNCEMENT message as the MCPTT group ID of the call;
6) shall store the value of the Call start time IE of the GROUP CALL ANNOUNCEMENT message as the call start time of the call;
7) shall create a call type control state machine as described in subclause 10.2.3.2;
8) if the terminating UE is configured that the terminating MCPTT user acknowledgement is required upon a terminating call request reception:
a) shall start timer TFG4 (waiting for the user);
b) if the GROUP CALL ANNOUNCEMENT message contains the Confirm mode indication IE, shall enter the "S5: pending user action with confirm indication" state; and
c) if the GROUP CALL ANNOUNCEMENT message does not contains the Confirm mode indication IE, shall enter the "S4: pending user action without confirm indication" state; and
9) if the terminating UE is configured that the terminating MCPTT user acknowledgement is not required upon a terminating call request reception:
a) shall establish a media session based on the stored SDP body of the call;
b) shall start floor control as terminating floor participant as specified in subclause 7.2 in 3GPP TS 24.380 [5];
c) if the GROUP CALL ANNOUNCEMENT message contains the Confirm mode indication IE:
i) shall generate a GROUP CALL ACCEPT message as specified in subclause 15.1.4. In the GROUP CALL ACCEPT message, the MCPTT client:
A) shall set the Call identifier IE to the stored call identifier of the call;
B) shall set the Sending MCPTT user ID IE to own MCPTT user id;
C) shall set the Call type IE to the stored current call type associated with the call type control state machine; and
D) shall set the MCPTT group ID IE to the stored MCPTT group ID of the call; and
ii) shall send the GROUP CALL ACCEPT message as specified in subclause 10.2.1.1.1;
d) shall start timer TFG6 (max duration) with value as specified in subclause 10.2.2.4.1.2;
e) shall start timer TFG2 (call announcement) with value as specified in subclause 10.2.2.4.1.1.1; and
f) shall enter the "S3: part of ongoing call" state.
[TS 24.379, clause 10.2.2.4.3.7]
When in the "S5: pending user action with confirm indication" state or the "S4: pending user action without confirm indication" state, upon an indication from the MCPTT user to reject the incoming group call, the MCPTT client:
1) shall stop timer TFG4 (waiting for the user);
2) shall start timer TFG5 (not present incoming call announcements); and
3) shall enter the "S6: ignoring incoming call announcements" state.
[TS 24.379, clause 10.2.2.4.3.4]
When in the "S5: pending user action with confirm indication" state, upon indication from the MCPTT user to accept the incoming group call, the MCPTT client:
1) shall establish a media session based on the stored SDP body of the call;
2) shall start floor control as terminating floor participant as specified in subclause 7.2 in 3GPP TS 24.380 [5];
3) shall generate a GROUP CALL ACCEPT message as specified in subclause 15.1.4. In the GROUP CALL ACCEPT message, the MCPTT client:
a) shall set the Call identifier IE to the stored call identifier of the call;
b) shall set the Sending MCPTT user ID IE to own MCPTT user id;
c) shall set the Call type IE to the stored current call type associated with the call type control state machine; and
d) shall set the MCPTT group ID IE to the stored MCPTT group ID of the call; and
4) shall send the GROUP CALL ACCEPT message as specified in subclause 10.2.1.1.1;
5) shall start timer TFG6 (max duration) with value as specified in subclause 10.2.2.4.1.2;
6) shall start timer TFG2 (call announcement) with value as specified in subclause 10.2.2.4.1.1.1; and
7) shall enter the "S3: part of ongoing call" state.
7.1.4.3 Test description
7.1.4.3.1 Pre-test conditions
System Simulator:
– SS-UE1 (MCPTT client)
– For the underlying "transport bearer" over which the SS and the UE will communicate, the SS is behaving as SS-UE1 as defined in TS 36.508 [24], configured for and operating as ProSe Direct Communication transmitting and receiving device.
– GNSS simulator to simulate a location and provide a timing reference for the assistance of E-UTRAN off-network testing.
NOTE 1: For operation in off-network environment, it needs be ensured that after the UE is powered up it considers the Geographical area #1 that is simulated by the GNSS simulator as being one of the geographical areas set in the USIM for operation when UE is "not served by E-UTRAN".
– SS-NW (MCPTT server)
— For the underlying "transport bearer" over which the SS and the UE will communicate Parameters are set to the default parameters for the basic E-UTRA Single cell network scenarios, as defined in TS 36.508 [24] clause 4.4. The simulated Cell 1 shall belong to PLMN1 (the PLMN specified for MCPTT operation in the MCPTT configuration document).
NOTE 2: The SS operation as NW (MCPTT server) is needed only for the Preamble if the UE has to perform the MCPTT User performs the Generic Test Procedure for MCPTT Authorization/Configuration and Key Generation as specified in TS 36.579-1 [2], subclause 5.3.2.
IUT:
– UE (MCPTT client)
– The test USIM set as defined in TS 36.579-1 [2], subclause 5.5.10 is inserted.
– For the underlying "transport bearer" over which the SS and the UE will communicate, the UE is behaving as a ProSe enabled UE as defined in TS 36.508 [24], configured for and operating as ProSe Direct Communication transmitting and receiving device.
Preamble:
– The UE has performed the Generic Test Procedure for MCPTT UE registration as specified in TS 36.579-1 [2], subclause 5.4.2.
– UE (MCPTT Client) is configured such that user acknowledgement is required upon a terminating call request reception
– The MCPTT User performs the Generic Test Procedure for MCPTT Authorization/Configuration and Key Generation as specified in TS 36.579-1 [2], subclause 5.3.2.
– The GNSS simulator is configured to simulate a location in the centre of Geographical area #1 and provide a timing reference, as defined in TS 36.508 [24] Table 4.11.2-2 scenario #1.
– The UE is switched-off.
– UE States at the end of the preamble
– The UE is in state ‘switched-off’.
7.1.4.3.2 Test procedure sequence
Table 7.1.4.3.2-1: Main Behaviour
St |
Procedure |
Message Sequence |
TP |
Verdict |
|
U – S |
Message |
||||
1 |
Power up the UE |
– |
– |
– |
– |
1A |
Trigger the UE to reset UTC time and location. NOTE: The UTC time and location reset may be performed by MMI or AT command (+CUTCR). |
– |
– |
– |
– |
2 |
Activate the MCPTT Client Application and register User A as the MCPTT User (TS 36.579-5 [5], px_MCPTT_User_A_username, px_MCPTT_User_A_password). (NOTE 1) |
– |
– |
– |
– |
– |
EXCEPTION: The E-UTRA/EPC actions which are related to the MCPTT call establishment are described in TS 36.579-1 [2], subclause 5.4.10 ‘Generic Test Procedure for MCPTT CT communication over ProSe direct one-to-many communication out of E-UTRA coverage / Announcing/Discoveree procedure for group member discovery / One-to-many communication’. The test sequence below shows only the MCPTT relevant messages exchanged. |
– |
– |
– |
– |
3 |
SS-UE1 (MCPTT client) sends a GROUP CALL ANNOUNCEMENT (NOTE 3) |
<– |
GROUP CALL ANNOUNCEMENT |
– |
– |
4 |
Void |
– |
– |
– |
– |
5 |
While the UE (MCPTT Client) is in the "S5: pending user action with confirm indication" state, make the UE (MCPTT Client) reject the call request (NOTE 1), (NOTE 2) |
– |
– |
– |
– |
6 |
Void |
– |
– |
– |
– |
7 |
Void |
– |
– |
– |
– |
– |
EXCEPTION: The E-UTRA/EPC actions which are related to the MCPTT call establishment are described in TS 36.579-1 [2], subclause 5.4.10 ‘Generic Test Procedure for MCPTT CT communication over ProSe direct one-to-many communication out of E-UTRA coverage / Announcing/Discoveree procedure for group member discovery / One-to-many communication’. The test sequence below shows only the MCPTT relevant messages exchanged. |
– |
– |
– |
– |
8 |
SS-UE1 (MCPTT client) sends a GROUP CALL ANNOUNCEMENT (NOTE 3) |
<– |
GROUP CALL ANNOUNCEMENT |
– |
– |
9 |
Void |
– |
– |
– |
– |
10 |
While the UE (MCPTT Client) is in the "S5: pending user action with confirm indication" state, make the UE (MCPTT Client) accept the call request (NOTE 1), (NOTE 2) |
– |
– |
– |
– |
11 |
Check: Does the UE (MCPTT Client) send a GROUP CALL ACEEPT message? |
–> |
GROUP CALL ACCEPT |
1 |
P |
12 |
Void |
– |
– |
– |
– |
13 |
Make the UE (MCPTT Client) release the group call (NOTE 1) |
– |
– |
– |
– |
NOTE 1: This is expected to be done via a suitable implementation dependent MMI. NOTE 2: If the MCPTT User does not act before the expiration of timer TFG4 (waiting for the user), then the MCPTT Client will enter the "S6: ignoring incoming call announcements" state and the remaining steps will not be valid. Timer TFG4 (waiting for the user)=20s as defined in TS 36.579-1 [2], Table 5.5.8.1-1 and is started upon the receiving of the GROUP CALL ANNOUNCEMENT message. If during test execution it is found that the specified timer value is not large enough, then a new value needs to be specified. NOTE 3: The UE (MCPTT Client) enters the "S5: pending user action with confirm indication" state |
7.1.4.3.3 Specific message contents
None