10.1.3 Network-requested PDU session release

38.523-13GPP5GSPart 1: ProtocolRelease 17TSUser Equipment (UE) conformance specification

10.1.3.1 Void

10.1.3.2 Network-requested PDU session release / Insufficient resources, insufficient resources for specific slice and DNN, abnormal / Invalid PDU session identity

10.1.3.2.1 Test Purpose (TP)

(1)

with { UE is in PDU SESSION ACTIVE state }

ensure that {

when { UE receives a PDU SESSION RELEASE COMMAND message including 5GSM cause #26 "insufficient resources" and the Back-off timer value that indicates neither zero nor deactivated }

then { UE does not send a PDU SESSION ESTABLISHMENT REQUEST until timer T3396 expires or timer T3396 is stopped }

}

(2)

with { UE is in PDU SESSION ACTIVE state }

ensure that {

when { UE receives a PDU SESSION RELEASE COMMAND message including 5GSM cause #26 "insufficient resources" and the Back-off timer value that indicates zero }

then { UE sends a PDU SESSION ESTABLISHMENT REQUEST message }

}

(3)

with { UE is in PDU SESSION ACTIVE state }

ensure that {

when { UE receives a PDU SESSION RELEASE COMMAND message including 5GSM cause #26 "insufficient resources" and the Back-off timer value that indicates deactivated }

then { UE does not send a PDU SESSION ESTABLISHMENT REQUEST message until the UE is switched off or the USIM is removed }

}

(4)

with { UE is in PDU SESSION ACTIVE state }

ensure that {

when { UE receives a PDU SESSION RELEASE COMMAND message including 5GSM cause #67 "insufficient resources for specific slice and DNN" and the Back-off timer value that indicates neither zero nor deactivated }

then { UE does not send a PDU SESSION ESTABLISHMENT REQUEST message for the same [S-NSSAI, DNN] combination until timer T3584 expires }

}

(5)

with { UE is in PDU SESSION ACTIVE state }

ensure that {

when { UE receives a PDU SESSION RELEASE COMMAND message including 5GSM cause #67 "insufficient resources for specific slice and DNN" and the Back-off timer value that indicates zero }

then { UE sends a PDU SESSION ESTABLISHMENT REQUEST message for the same [S-NSSAI, DNN] combination }

}

(6)

with { UE is in PDU SESSION ACTIVE state }

ensure that {

when { UE receives a PDU SESSION RELEASE COMMAND message including 5GSM cause #67 "insufficient resources for specific slice and DNN" and the Back-off timer value that indicates deactivated }

then { UE does not send a PDU SESSION ESTABLISHMENT REQUEST message for the same [S-NSSAI, DNN] combination until the UE is switched off or the USIM is removed }

}

(7)

with { UE is in PDU SESSION ACTIVE state }

ensure that {

when { UE receives a PDU SESSION RELEASE COMMAND message, in which the PDU session ID belongs to any PDU session in state PDU SESSION INACTIVE in the UE }

then { UE sends 5GSM STATUS message including 5GSM cause #43 "Invalid PDU session identity" }

}

10.1.3.2.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 24.501, clause 6.3.3.2 and 6.3.3.3. Unless otherwise stated these are Rel-15 requirements.

[TS 24.501, clause 6.3.3.2]

In order to initiate the network-requested PDU session release procedure, the SMF shall create a PDU SESSION RELEASE COMMAND message.

The SMF shall set the SM cause IE of the PDU SESSION RELEASE COMMAND message to indicate the reason for releasing the PDU session.

The SM cause IE typically indicates one of the following SM cause values:

#26 insufficient resources;

#67 insufficient resources for specific slice and DNN;

The SMF may include a Back-off timer value IE in the PDU SESSION RELEASE COMMAND message when the 5GSM cause value #26 "insufficient resources" is included in the PDU SESSION RELEASE COMMAND message. If the 5GSM cause value is #26 "insufficient resources" and the PDU SESSION RELEASE COMMAND message is sent to a UE configured for high priority access in selected PLMN or the request type was set to "initial emergency request" or "existing emergency PDU session" for the establishment of the PDU session, the network shall not include a Back-off timer value IE.

The SMF may include a Back-off timer value IE in the PDU SESSION RELEASE COMMAND message when the 5GSM cause value #67 "insufficient resources for specific slice and DNN" is included in the PDU SESSION RELEASE COMMAND message. If the 5GSM cause value is #67 "insufficient resources for specific slice and DNN" and the PDU SESSION RELEASE COMMAND message is sent to a UE configured for high priority access in selected PLMN or the request type was set to "initial emergency request" or "existing emergency PDU session" for the establishment of the PDU session, the network shall not include a Back-off timer value IE.

[TS 24.501, clause 6.3.3.3]

Upon receipt of a PDU SESSION RELEASE COMMAND message and a PDU session ID, using the NAS transport procedure as specified in subclause 5.4.5, the UE considers the PDU session as released and the UE shall create a PDU SESSION RELEASE COMPLETE message.

If the PDU SESSION RELEASE COMMAND message includes 5GSM cause #26 "insufficient resources" and the Back-off timer value IE, the UE shall take different actions depending on the timer value received for timer T3396 in the Back-off timer value:

a) If the timer value indicates neither zero nor deactivated and a DNN was provided during the PDU session establishment, the UE shall stop timer T3396 associated with the corresponding DNN, if it is running. If the timer value indicates neither zero nor deactivated and no DNN was provided during the PDU session establishment and the request type was different from "initial emergency request" and different from "existing emergency PDU session", the UE shall stop timer T3396 associated with no DNN if it is running. The UE shall then start timer T3396 with the value provided in the Back-off timer value IE and:

1) shall not send a PDU SESSION ESTABLISHMENT REQUEST message or PDU SESSION MODIFICATION REQUEST message with exception of those identified in subclause 6.4.2.1, for the same DNN that was sent by the UE, until timer T3396 expires or timer T3396 is stopped; and

2) shall not send a PDU SESSION ESTABLISHMENT REQUEST message without an DNN and with request type different from "initial emergency request" and different from "existing emergency PDU session", or a PDU SESSION MODIFICATION REQUEST message with exception of those identified in subclause 6.4.2.1, for a non-emergency PDU session established without an DNN provided by the UE, if no DNN was provided during the PDU session establishment and the request type was different from "initial emergency request" and different from "existing emergency PDU session", until timer T3396 expires or timer T3396 is stopped.

The UE shall not stop timer T3396 upon a PLMN change or inter-system change;

b) if the timer value indicates that this timer is deactivated and a DNN was provided during the PDU session establishment, the UE shall stop timer T3396 associated with the corresponding DNN, if it is running. If the timer value indicates that this timer is deactivated and no DNN was provided during the PDU session establishment and the request type was different from "initial emergency request" and different from "existing emergency PDU session", the UE shall stop timer T3396 associated with no DNN if it is running. The UE:

1) shall not send a PDU SESSION ESTABLISHMENT REQUEST message or PDU SESSION MODIFICATION REQUEST message with exception of those identified in subclause 6.4.2.1, for the same DNN until the UE is switched off or the USIM is removed, or the UE receives a PDU SESSION MODIFICATION COMMAND message for the same DNN from the network or a PDU SESSION RELEASE COMMAND message including 5GSM cause #39 "reactivation requested" for the same DNN from the network; and

2) shall not send a PDU SESSION ESTABLISHMENT REQUEST message without an DNN and with request type different from "initial emergency request" and different from "existing emergency PDU session", or a PDU SESSION MODIFICATION REQUEST message with exception of those identified in subclause 6.4.2.1, for a non-emergency PDU session established without an DNN provided by the UE, if no DNN was provided during the PDU session establishment and the request type was different from "initial emergency request" and different from "existing emergency PDU session", until the UE is switched off or the USIM is removed, or the UE receives a PDU SESSION MODIFICATION COMMAND message for a non-emergency PDU session established without an DNN provided by the UE, or a PDU SESSION RELEASE COMMAND message including 5GSM cause IE set to 5GSM cause #39 "reactivation requested" for a non-emergency PDU session established without an DNN provided by the UE.

The timer T3396 remains deactivated upon a PLMN change or inter-system change; and

c) if the timer value indicates zero, the UE:

1) shall stop timer T3396 associated with the corresponding DNN, if running, and may send a PDU SESSION ESTABLISHMENT REQUEST message or PDU SESSION MODIFICATION REQUEST message for the same DNN; and

2) if no DNN was provided during the PDU session establishment and the request type was different from "initial emergency request" and different from "existing emergency PDU session", the UE shall stop timer T3396 associated with no DNN, if running, and may send a PDU SESSION ESTABLISHMENT REQUEST message without a DNN, or a PDU SESSION MODIFICATION REQUEST message without an DNN provided by the UE.

If the PDU SESSION RELEASE COMMAND message includes 5GSM cause #26 "insufficient resources" and the Back-off timer value IE is not included, then the UE may send a PDU SESSION ESTABLISHMENT REQUEST message or PDU SESSION MODIFICATION REQUEST message for the same DNN or without a DNN.

When the timer T3396 is running or the timer is deactivated, the UE is allowed to initiate a PDU session establishment procedure for emergency services.

If the timer T3396 is running when the UE enters state 5GMM-DEREGISTERED, the UE remains switched on, and the USIM in the UE remains the same, then timer T3396 is kept running until it expires or it is stopped.

If the UE is switched off when the timer T3396 is running, and if the USIM in the UE remains the same when the UE is switched on, the UE shall behave as follows:

– let t1 be the time remaining for T3396 timeout at switch off and let t be the time elapsed between switch off and switch on. If t1 is greater than t, then the timer shall be restarted with the value t1 – t. If t1 is equal to or less than t, then the timer need not be restarted. If the UE is not capable of determining t, then the UE shall restart the timer with the value t1.

If the 5GSM cause value is #67 "insufficient resources for specific slice and DNN" and the Back-off timer value IE is included, the UE shall take different actions depending on the timer value received for timer T3584 in the Back-off timer value:

a) If the timer value indicates neither zero nor deactivated, the UE shall stop timer T3584 associated with the same [S-NSSAI, DNN] combination as that the UE provided when the PDU session is established, if it is running. The UE shall then start timer T3584 with the value provided in the Back-off timer value IE.

The UE shall not send another PDU SESSION ESTABLISHMENT REQUEST message with request type different from "initial emergency request" and different from "existing emergency PDU session", or PDU SESSION MODIFICATION REQUEST message with exception of those identified in subclause 6.4.2.1, for the same [S-NSSAI, DNN] combination that was sent by the UE, until timer T3584 expires or timer T3584 is stopped;

The UE shall not stop timer T3584 upon a PLMN change or inter-system change;

b) if the timer value indicates that this timer is deactivated, the UE shall stop timer T3584 associated with the same [S-NSSAI, DNN] combination as that the UE provided when the PDU session is established, if it is running.

The UE shall not send another PDU SESSION ESTABLISHMENT REQUEST message with request type different from "initial emergency request" and different from "existing emergency PDU session", or PDU SESSION MODIFICATION REQUEST message with exception of those identified in subclause 6.4.2.1, for the same [S-NSSAI, DNN] combination that was sent by the UE, until the UE is switched off or the USIM is removed, or the UE receives a PDU SESSION MODIFICATION REQUEST message for the same [S-NSSAI, DNN] combination from the network or a PDU SESSION RELEASE COMMAND message including 5GSM cause #39 "reactivation requested" for the same [S-NSSAI, DNN] combination from the network; and

The timer T3584 remains deactivated upon a PLMN change or inter-system change; and

c) if the timer value indicates zero, the UE shall stop timer T3584 associated with the same [S-NSSAI, DNN] combination that was sent by the UE, if running, and may send another PDU SESSION ESTABLISHMENT REQUEST message or PDU SESSION MODIFICATION REQUEST message for the same [S-NSSAI, DNN] combination.

If the 5GSM cause value is #67 "insufficient resources for specific slice and DNN" and the Back-off timer value IE is not included, then the UE may send another PDU SESSION ESTABLISHMENT REQUEST message or PDU SESSION MODIFICATION REQUEST message for the same [S-NSSAI, DNN] combination.

When the timer T3584 is running or the timer is deactivated, the UE is allowed to initiate a PDU session establishment procedure for emergency services.

If the timer T3584 is running when the UE enters state 5GMM-DEREGISTERED, the UE remains switched on, and the USIM in the UE remains the same, then timer T3584 is kept running until it expires or it is stopped.

If the UE is switched off when the timer T3584 is running, and if the USIM in the UE remains the same when the UE is switched on, the UE shall behave as follows:

– let t1 be the time remaining for T3584 timeout at switch off and let t be the time elapsed between switch off and switch on. If t1 is greater than t, then the timer shall be restarted with the value t1 – t. If t1 is equal to or less than t, then the timer need not be restarted. If the UE is not capable of determining t, then the UE shall restart the timer with the value t1.

[TS 24.501, clause 6.3.3.6]

The following abnormal cases can be identified:

a) PDU session inactive for the received PDU session ID.

If the PDU session ID in the PDU SESSION RELEASE COMMAND message belongs to any PDU session in state PDU SESSION INACTIVE in the UE, the UE shall include the 5GSM cause #43 "Invalid PDU session identity" in the 5GSM STATUS message, and set the PDU session ID to the received PDU session ID in the UL NAS TRANSPORT message as specified in subclause 5.4.5.

[TS 24.501, clause B.1]

Cause #43 –Invalid PDU session identity

This 5GSM cause is used by the network or the UE to indicate that the PDU session identity value provided to it is not a valid value or the PDU session identified by the PDU session identity IE in the request or the command is not active.

[24.501, clause 7.3.2]

The following UE procedures shall apply for handling an unknown, erroneous, or unforeseen PDU session identity received in the header of a 5GSM message:

a) If the UE receives a 5GSM message which includes an unassigned or reserved PDU session identity value, the UE shall ignore the message.

b) If the UE receives a 5GSM message which includes a PDU session identity belonging to any PDU session in state PDU SESSION INACTIVE in the UE, the UE shall respond with a 5GSM STATUS message including 5GSM cause #43 "invalid PDU session identity".

10.1.3.2.3 Test description

10.1.3.2.3.1 Pre-test conditions

System Simulator:

– NGC Cell A.

UE:

None.

Preamble:

– The UE is in state 3N-A on NGC Cell A according to TS 38.508-1 [4].

10.1.3.2.3.2 Test procedure sequence

Table 10.1.3.2.3.2-1: Main behaviour

St

Procedure

Message Sequence

TP

Verdict

U – S

Message

1

Cause the UE to request establishment of PDU session without DNN.(Note 1)

2

The PDU session establishment procedure as specified in TS 38.508-1 [4] subclause 4.5A.2 take place.

3

The generic test procedure in TS 38.508-1 Table 4.9.21.2.2-1 of Procedure for PDU Session Release is performed.

4

Void

5

Cause the UE to request establishment of PDU session without DNN within 2 minutes of Step 3 (Note 1)

6

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST message before timer T3396 has expired?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

1

F

7

Cause the UE to request establishment of PDU session without DNN after 2 minutes since Step 3.(Note 1)

8

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST message?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

1

P

9

The SS transmits a PDU SESSION ESTABLISHMENT ACCEPT message.

<–

5GMM: DL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT ACCEPT

10

The generic test procedure in TS 38.508-1 Table 4.9.21.2.2-1 of Procedure for PDU Session Release is performed

11

Void

12

Cause the UE to request establishment of PDU session without DNN.(Note 1)

13

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST message?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

2

P

14

The SS transmits a PDU SESSION ESTABLISHMENT ACCEPT message.

<–

5GMM: DL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT ACCEPT

15

The generic test procedure in TS 38.508-1 Table 4.9.21.2.2-1 of Procedure for PDU Session Release is performed

16

Void

17

Cause the UE to request establishment of PDU session without DNN.(Note 1)

18

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST message in 5 seconds?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

3

F

19

Switch off UE in RRC CONNECTED as described in TS38.508-1 [4] subclause 4.9.6.3

20

Switch on UE.

21

The general procedure is completed by executing of the UE registration procedure in TS 38.508-1 [4] table 4.5.2.2-2 , ‘connected without release‘.

22

Cause the UE to request establishment of PDU session without DNN.(Note 1)

23

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST message?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

3

P

24

The SS transmits a PDU SESSION ESTABLISHMENT ACCEPT message.

<–

5GMM: DL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT ACCEPT

25

Cause the UE to request establishment of PDU session with [S-NSSAI, DNN] combination.(Note 1)

26

The PDU session establishment procedure as specified in TS 38.508-1 [4] subclause 4.5A.2 take place.

27

The generic test procedure in TS 38.508-1 Table 4.9.21.2.2-1 of Procedure for PDU Session Release is performed

28

Void

29

Cause the UE to request establishment of PDU session with the same [S-NSSAI, DNN] combination as the PDU session established at step 26 within 2 minutes of Step 27.(Note 1)

30

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST before timer T3584 has expired?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

4

F

31

Cause the UE to request establishment of PDU session with the same [S-NSSAI, DNN] combination as the PDU session established at step 26 after 2 minutes since Step 27.(Note 1)

32

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

4

P

33

The SS transmits a PDU SESSION ESTABLISHMENT ACCEPT message.

<–

5GMM: DL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT ACCEPT

34

The generic test procedure in TS 38.508-1 Table 4.9.21.2.2-1 of Procedure for PDU Session Release is performed

35

Void

36

Cause the UE to request establishment of PDU session with the same [S-NSSAI, DNN] combination as the PDU session established at step 26.(Note 1)

37

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

5

P

38

The SS transmits a PDU SESSION ESTABLISHMENT ACCEPT message.

<–

5GMM: DL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT ACCEPT

39

The generic test procedure in TS 38.508-1 Table 4.9.21.2.2-1 of Procedure for PDU Session Release is performed

40

Void

41

Cause the UE to request establishment of PDU session with the same [S-NSSAI, DNN] combination as the PDU session established at step 26.(Note 1)

42

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST in 5 seconds?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

6

F

43

The SS transmits a PDU SESSION RELEASE COMMAND including the PDU session ID UE requested in step 42.

<–

5GMM: DL NAS TRANSPORT

5GSM: PDU SESSION RELEASE COMMAND

44

Check: Does the UE transmit a 5GSM STATUS message with value #43?

–>

5GSM: UL NAS TRANSPORT

5GSM: 5GSM STATUS

7

P

45

Switch off UE in RRC CONNECTED as described in TS38.508-1 [4] subclause 4.9.6.3

46

Switch on UE.

47

The general procedure is completed by executing of the UE registration procedure in TS 38.508-1 [4] table 4.5.2.2-2 , ‘connected without release’.

48

Cause the UE to request establishment of PDU session with the same [S-NSSAI, DNN] combination as the PDU session established at step 26.(Note 1)

49

Check: Does the UE transmit a PDU SESSION ESTABLISHMENT REQUEST?

–>

5GMM: UL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT REQUEST

6

P

50

The SS transmits a PDU SESSION ESTABLISHMENT ACCEPT message.

<–

5GMM: DL NAS TRANSPORT

5GSM: PDU SESSION ESTABLISHMENT ACCEPT

Note 1: The request to establish a PDU session may be performed by MMI or AT Command.

Table 10.1.3.2.3.2-2: Void

Table 10.1.3.2.3.2-3: Void

10.1.3.2.3.3 Specific message contents

Table 10.1.3.2.3.3-1: UL NAS TRANSPORT (step 2, 8, 13 and 23, Table 10.1.3.2.3.2-1; step 2a1, Table 4.5A.2.2.2-2, TS 38.508-1[4]); step 2a1, Table 4.5A.2.2.2-2, TS 38.508-1 [4]))

Derivation Path: TS 38.508-1 [4] Table 4.7.1-10

Information Element

Value/remark

Comment

Condition

Payload container type

‘0001’B

N1 SM information

Payload container

PDU SESSION ESTABLISHMENT REQUEST

DNN

Not present

Table 10.1.3.2.3.3-1A: PDU SESSION ESTABLISHMENT ACCEPT (step 2, 9, 14 and 24, Table 10.1.3.2.3.2-1; step 3, Table 4.5A.2.2.2-1, TS 38.508-1 [4])

Derivation path: TS 38.508-1 [4], Table 4.7.2-2

Information Element

Value/remark

Comment

Condition

Authorized QoS rules

5GC QoS rule of the Config#1 in Table 4.8.4-1

Mapped EPS bearer contexts

Mapped EPS bearer context

Mapped EPS QoS parameters

EPC default bearer context of the Config#1 in Table 4.8.4-1

DNN

The DNN/APN ID of the Config#1 in Table 4.8.4-1

Table 10.1.3.2.3.3-2: PDU SESSION RELEASE COMMAND (step 3, Table 10.1.3.2.3.2-1; step 1, Table 4.9.21.2.2-1, TS 38.508-1 [4])

Derivation Path: TS 38.508-1 [4] Table 4.7.2-14

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 2 in Table 10.1.3.2.3.2-1

5GSM cause

‘0001 1010’B

insufficient resources

Back-off timer value

‘1010 0010’B

2 minutes

Table 10.1.3.2.3.3-3: Void

Table 10.1.3.2.3.3-4: PDU SESSION RELEASE COMMAND (step 10, Table 10.1.3.2.3.2-1; step 1, Table 4.9.21.2.2-1, TS 38.508-1 [4])

Derivation Path: TS 38.508-1 [4] Table 4.7.2-14

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 8 in Table 10.1.3.2.3.2-1

5GSM cause

‘0001 1010’B

insufficient resources

Back-off timer value

‘1010 0000’B

0 minutes

Table 10.1.3.2.3.3-5: PDU SESSION RELEASE COMMAND (step 15, Table 10.1.3.2.3.2-1; step 1, Table 4.9.21.2.2-1, TS 38.508-1 [4])

Derivation Path: TS 38.508-1 [4] Table 4.7.2-14

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 13 in Table 10.1.3.2.3.2-1

5GSM cause

‘0001 1010’B

insufficient resources

Back-off timer value

‘1110 0000’B

deactivated

Table 10.1.3.2.3.3-6: UL NAS TRANSPORT (step 26, Table 10.1.3.2.3.2-1)

Derivation Path: TS 38.508-1 [4] Table 4.7.1-10

Information Element

Value/remark

Comment

Condition

Payload container type

‘0001’B

N1 SM information

Payload container

PDU SESSION ESTABLISHMENT REQUEST

S-NSSAI

present

DNN

present

Table 10.1.3.2.3.3-6A: PDU SESSION ESTABLISHMENT ACCEPT (step 26, 33, 38, and 50,Table 10.1.3.2.3.2-1; step 3, Table 4.5A.2.2.2-1, TS 38.508-1 [4])

Derivation path: TS 38.508-1 [4], Table 4.7.2-2

Information Element

Value/remark

Comment

Condition

Authorized QoS rules

5GC QoS rule of the Config#1 in Table 4.8.4-1

Mapped EPS bearer contexts

Mapped EPS bearer context

Mapped EPS QoS parameters

EPC default bearer context of the Config#1 in Table 4.8.4-1

DNN

The same DNN value as sent in the UL NAS TRANSPORT message at (step 26, 33, 38, and 50,Table 10.1.3.2.3.2-1; step 2a1, Table 4.5A.2.2.2-2, TS 38.508-1 [4])

Table 10.1.3.2.3.3-7: PDU SESSION RELEASE COMMAND (step 27, Table 10.1.3.2.3.2-1; step 1, Table 4.9.21.2.2-1, TS 38.508-1 [4])

Derivation Path: TS 38.508-1 [4] Table 4.7.2-14

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 26 in Table 10.1.3.2.3.2-1

5GSM cause

‘0100 0011’B

insufficient resources for specific slice and DNN

Back-off timer value

‘1010 0010’B

2 minutes

Table 10.1.3.2.3.3-8: UL NAS TRANSPORT (step 32, 37 and 49, Table 10.1.3.2.3.2-1)

Derivation Path: TS 38.508-1 [4] Table 4.7.1-10

Information Element

Value/remark

Comment

Condition

Payload container type

‘0001’B

N1 SM information

Payload container

PDU SESSION ESTABLISHMENT REQUEST

S-NSSAI

The same S-NSSAI as the S-NSSAI of the PDU session which UE request at step 26

DNN

The same DNN as the DNN of the PDU session which UE request at step 26

Table 10.1.3.2.3.3-9: PDU SESSION RELEASE COMMAND (step 34, Table 10.1.3.2.3.2-1; step 1, Table 4.9.21.2.2-1, TS 38.508-1 [4])

Derivation Path: TS 38.508-1 [4] Table 4.7.2-14

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 32 in Table 10.1.3.2.3.2-1

5GSM cause

‘0100 0011’B

insufficient resources for specific slice and DNN

Back-off timer value

‘1010 0000’B

0 minutes

Table 10.1.3.2.3.3-10: PDU SESSION RELEASE COMMAND (step 39, Table 10.1.3.2.3.2-1; step 1, Table 4.9.21.2.2-1, TS 38.508-1 [4])

Derivation Path: TS 38.508-1 [4] Table 4.7.2-14

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 37 in Table 10.1.3.2.3.2-1

5GSM cause

‘0100 0011’B

insufficient resources for specific slice and DNN

Back-off timer value

‘1110 0000’B

deactivated

Table 10.1.3.2.3.3-11: PDU SESSION RELEASE COMMAND (step 43, Table 10.1.3.2.3.2-1; step 1, Table 4.9.21.2.2-1, TS 38.508-1 [4])

Derivation Path: TS 38.508-1 [4] Table 4.7.2-14

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 37 in Table 10.1.3.2.3.2-1

5GSM cause

‘0010 0100’B

#36 regular deactivation

Table 10.1.3.2.3.3-11A: UL NAS TRANSPORT (step 44, Table 10.1.3.2.3.2-1)

Derivation Path: TS 38.508-1 [4] Table 4.7.1-10

Information Element

Value/remark

Comment

Condition

PDU session ID

The same ID as the ID of PDU session which UE request in step 37 in Table 10.1.3.2.3.2-1

Payload container type

‘0001’B

N1 SM information

Payload container

5GSM STATUS

Table 10.1.3.2.3.3-12: 5GSM STATUS (Table 10.1.3.2.3.3-11A)

Derivation Path: TS 38.508-1 [4] Table 4.7.2-16

Information Element

Value/remark

Comment

Condition

5GSM cause

‘0010 1011’B

#43 Invalid PDU session identity