26.14.5 VGCS-VBS / Leaving Group Receive or Group Transmit Mode

3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS

26.14.5.1 VGCS-VBS / Leaving group receive mode

26.14.5.1.1 Conformance requirement

In group receive mode:

1. The MS shall return to idle mode and give an indication to the upper layer when it received a CHANNEL RELEASE message of UI format.

2. In sub-state NO CHANNEL for VGCS or RECEIVE MODE ACTIVE for VBS, when Tno channel expires, the GCC/BCC entity in the MS shall inform higher layers, ask lower sub-layers to abort resources and enter the idle state.

3. If the upper layer requests to abort group receive mode, the mobile station shall return to idle mode.

Reference(s)

3GPP TS 04.08 / 3GPP TS 44.018 subclauses 3.4.15.1.2.6 and 3.4.15.1.4.1.

3GPP TS 04.68 subclauses 6.1.2.1.10 and 6.3.1.1.

3GPP TS 04.69 subclauses 6.1.2.1.10 and 6.3.3.

26.14.5.1.2 Test purpose

To verify that in group receive mode:

1. The MS enters idle mode when it received a CHANNEL RELEASE message of UI format.

2. On user’s request to abort group receive mode, the MS returns to idle mode.

3. In sub-state NO CHANNEL for VGCS or RECEIVE MODE ACTIVE for VBS, when Tno channel expires the MS aborts resources and enters the idle mode.

26.14.5.1.3 Method of test

Initial Conditions

System Simulator:

1 cell with default parameters for ASCI testing

Mobile Station:

The MS is in group receive mode.

Specific PICS statements:

PIXIT Statements:

– Way to configure VGCS or VBS.

– Way to indicate a call notification.

– Way to accept a VGCS or VBS.

– Way to verify the downlink speech path.

Foreseen Final State of the MS

"Idle, updated", with TMSI allocated.

Test Procedure

The MS is in group receive mode. The SS sends CHANNEL RELEASE. It is checked that the MS returns to idle mode by sending PAGING REQUEST. The MS is brought into group receive mode. The MS is requested to stop VGCS/VBS listening by MMI action. It is checked that the MS returns to idle mode. The MS is brought into group receive mode again. The SS stops downlink transmissions on VGCS/VBS downlink channel. It is checked that the MS returns to idle mode after Tno channel times out (3 s after the SS stops downlink transmission).

Maximum Duration of Test

5 minutes.

Expected Sequence

Step

Direction

Message

Comments

0

MS

the MS is in group receive mode.

1

SS -> MS

CHANNEL RELEASE

UI format.

2

SS

wait 5s.

3

SS -> MS

PAGING REQUEST TYPE 1

"Mobile Identity" IE contains the TMSI allocated to the MS.

4

MS -> SS

CHANNEL REQUEST

"Establishment Cause" = Answer to paging.

5

SS -> MS

IMMEDIATE ASSIGNMENT REJECT

the first "request reference" corresponds to the CHANNEL REQUEST sent by the MS.

6

SS

wait 5s.

7

SS -> MS

NOTIFICATION/NCH

with group call channel description and the call reference active in the MS. The call reference is different from that used in step 0.

8

MS

MMI action to join the VGCS/VBS call.

9

MS

MMI action to stop the VGCS/VBS listening.

10

SS

wait 5s..

11

SS -> MS

PAGING REQUEST TYPE 1

"Mobile Identity" IE contains the TMSI allocated to the MS.

12

MS -> SS

CHANNEL REQUEST

"Establishment Cause" = Answer to paging.

13

SS -> MS

IMMEDIATE ASSIGNMENT REJECT

the first "request reference" corresponds to the CHANNEL REQUEST sent by the MS.

14

SS

wait 5s.

15

SS -> MS

NOTIFICATION/NCH

with group call channel description and the call reference active in the MS. The call reference is different from that used in step 0 and 3.

16

MS

MMI action to join the VGCS/VBS call.

17

SS

stop the VGCS/VBS downlink transmissions and wait 4 s.

18

SS -> MS

PAGING REQUEST TYPE 1

"Mobile Identity" IE contains the TMSI allocated to the MS.

19

MS -> SS

CHANNEL REQUEST

"Establishment Cause" = Answer to paging.

20

SS -> MS

IMMEDIATE ASSIGNMENT REJECT

the first "request reference" corresponds to the CHANNEL REQUEST sent by the MS.

26.14.5.2 VGCS-VBS / Leaving group transmit mode

26.14.5.2.1 Conformance requirement

In group transmit mode (VGCS):

1. If the uplink release is requested by the upper layer the mobile station shall send an UPLINK RELEASE message on the voice group call channel uplink, perform a release of the main signalling link and go back to group receive mode.

2. If the UPLINK RELEASE message is received from the network on the voice group call channel downlink, the MS shall perform a release of the main signalling link and go back to group receive mode.

3. The talking subscriber’s mobile station which has lost the contact with the network shall return immediately to group receive mode.

Reference(s)

3GPP TS 04.08 / 3GPP TS 44.018 subclausez 3.4.13.4 and 3.4.13.5.1.

3GPP TS 03.68 subclause 4.2.2.2.

26.14.5.2.2 Test purpose

To verify that in group transmit mode (VGCS):

1. When uplink release is requested by the user the mobile station sends an UPLINK RELEASE message on the voice group call channel uplink, performs a release of the main signalling link and goes back to group receive mode.

2. When the UPLINK RELEASE message is received from the network on the voice group call channel downlink, the MS performs a release of the main signalling link and goes back to group receive mode.

3. When a radio link failure is detected by the MS the MS shall return to idle mode and, when possible, to group receive mode.

26.14.5.2.3 Method of test

Initial Conditions

System Simulator:

1 cell with default parameters for ASCI testing.

Mobile Station:

The MS is in group transmit mode.

Specific PICS statements:

PIXIT Statements:

– Way to configure VGCS.

– Way to initiate VGCS talking.

– Way to verify the downlink speech path.

Foreseen Final State of the MS

"Idle, updated", with TMSI allocated.

Test Procedure

The MS is in VGCS group transmit mode. The MS is requested to quit group transmit mode by MMI action. It is checked that the MS sends an UPLINK RELEASE message and goes to group receive mode. The MS is brought into group transmit mode. The SS sends UPLINK RELEASE message. It is checked that the MS returns to group receive mode. The MS is brought into group transmit mode again. The SS stops radio transmitting on SACCH. It is checked that the MS returns to group receive mode.

Maximum Duration of Test

5 minutes.

Expected Sequence

Step

Direction

Message

Comments

0

MS

The MS is in group transmit mode.

1

MS

MMI action to quit the VGCS transmit mode.

2

MS -> SS

UPLINK RELEASE

3

MS

check that the TCH in downlink is through connected and there is no uplink transmission on that channel for 10 s.

8

SS -> MS

UPLINK FREE

9

MS

MMI action to request access uplink.

10

MS -> SS

UPLINK ACCESS

11

MS -> SS

UPLINK ACCESS

12

SS -> MS

UPLINK BUSY

13

SS -> MS

VGCS UPLINK GRANT

Reference to step 10

14

MS -> SS

TALKER INDICATION

L2: SABM / UA

15

MS

the MS is in group transmit mode for 5 s.

16

SS -> MS

UPLINK RELEASE

17

MS

check that the TCH in downlink is through connected and there is no uplink transmission on that channel for 10 s.

20

SS -> MS

UPLINK FREE

21

MS

MMI action to request access uplink.

22

MS -> SS

UPLINK ACCESS

23

MS -> SS

UPLINK ACCESS

24

SS -> MS

UPLINK BUSY

25

SS -> MS

VGCS UPLINK GRANT

Reference to step 23

26

MS -> SS

TALKER INDICATION

L2: SABM / UA

27

MS

the MS is in group transmit mode for 5 s.

28

SS

deactivate downlink SACCH transmissions, but keep TCH active, wait until there is no more uplink SACCH frames received

29

MS

check that the TCH in downlink is through connected and there is no uplink transmission on that channel for 10 s.

30

SS -> MS

CHANNEL RELEASE

UI format