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Content for  TS 24.501  Word version:  18.5.0

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8.3  5GS session management messagesp. 792

8.3.1  PDU session establishment requestp. 792

8.3.1.1  Message definitionp. 792

The PDU SESSION ESTABLISHMENT REQUEST message is sent by the UE to the SMF to initiate establishment of a PDU session. See Table 8.3.1.1.1.
Message type:
PDU SESSION ESTABLISHMENT REQUEST
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION ESTABLISHMENT REQUEST message identityMessage type
9.7
MV1
Integrity protection maximum data rateIntegrity protection maximum data rate
9.11.4.7
MV2
9-PDU session typePDU session type
9.11.4.11
OTV1
A-SSC modeSSC mode
9.11.4.16
OTV1
285GSM capability5GSM capability
9.11.4.1
OTLV3-15
55Maximum number of supported packet filtersMaximum number of supported packet filters
9.11.4.9
OTV3
B-Always-on PDU session requestedAlways-on PDU session requested
9.11.4.4
OTV1
39SM PDU DN request containerSM PDU DN request container
9.11.4.15
OTLV3-255
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
66IP header compression configurationIP header compression configuration
9.11.4.24
OTLV5-257
6EDS-TT Ethernet port MAC addressDS-TT Ethernet port MAC address
9.11.4.25
OTLV8
6FUE-DS-TT residence timeUE-DS-TT residence time
9.11.4.26
OTLV10
74Port management information containerPort management information container
9.11.4.27
OTLV-E8-65538
1FEthernet header compression configurationEthernet header compression configuration
9.11.4.28
OTLV3
29Suggested interface identifierPDU address
9.11.4.10
OTLV11
72Service-level-AA containerService-level-AA container
9.11.2.10
OTLV-E6-n
70Requested MBS containerRequested MBS container
9.11.4.30
OTLV-E8-65538
34PDU session pair IDPDU session pair ID
9.11.4.32
OTLV3
35RSNRSN
9.11.4.33
OTLV3
Up

8.3.1.2  PDU session typep. 793

This IE shall be included in the message when the UE requests to establish a new PDU session.

8.3.1.3  SSC modep. 794

This IE is included in the message when the UE requests to establish a new PDU session with a DN and requests an SSC mode.

8.3.1.4  Maximum number of supported packet filtersp. 794

This IE shall be included in the message when the selected PDU session type is "IPv4", "IPv6", "IPv4v6" or "Ethernet" and the UE can support more than 16 packet filters for this PDU session.

8.3.1.5  5GSM capabilityp. 794

This IE is included in the message when the UE requests to establish a new PDU session or to transfer an existing PDN connection and any of the 5GSM capabilities supported by the UE is relevant for the PDU session.

8.3.1.6Void

8.3.1.7  Always-on PDU session requestedp. 794

The UE shall include this IE if the UE requests to establish a PDU session as an always-on PDU session.

8.3.1.8  SM PDU DN request containerp. 794

This IE is included in the message when the UE requests to establish a new PDU session with a DN and needs to provide information for the PDU session authentication and authorization by the external DN.

8.3.1.9  Extended protocol configuration optionsp. 794

This IE is included in the message when the UE needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the network.

8.3.1.10  IP header compression configuration |R16|p. 794

The UE shall include the IP header compression configuration IE if:
  • the PDU session type value of the PDU session type IE is set to "IPv4", "IPv6" or "IPv4v6";
  • the UE indicates "Control Plane CIoT 5GS optimization supported" and "IP header compression for control plane CIoT 5GS optimization supported" in the 5GMM capability IE of the REGISTRATION REQUEST message; and
  • the network indicates "Control plane CIoT 5GS optimization supported" and "IP header compression for control plane CIoT 5GS optimization supported" in the 5GS network support feature IE of the REGISTRATION ACCEPT message.
Up

8.3.1.11  DS-TT Ethernet port MAC address |R16|p. 794

This IE shall be included in the message if the UE supports transfer of port management information containers and the UE requests to establish a new PDU session of "Ethernet" PDU session type.

8.3.1.12  UE-DS-TT residence time |R16|p. 794

This IE shall be included in the message if:
  1. the UE supports transfer of port management information containers; and
  2. the UE-DS-TT residence time is available at the UE.

8.3.1.13  Port management information container |R16|p. 795

This IE shall be included in the message if the UE supports transfer of port management information containers.

8.3.1.14  Ethernet header compression configuration |R16|p. 795

The UE shall include the Ethernet header compression configuration IE if:
  • the PDU session type value of the PDU session type IE is set to "Ethernet";
  • the UE indicated "Control Plane CIoT 5GS optimization supported" and "Ethernet header compression for control plane CIoT 5GS optimization supported" in the 5GMM capability IE of the REGISTRATION REQUEST message; and
  • the network indicated "Control plane CIoT 5GS optimization supported" and "Ethernet header compression for control plane CIoT 5GS optimization supported" in the 5GS network support feature IE of the REGISTRATION ACCEPT message.
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8.3.1.15  Suggested interface identifier |R16|p. 795

This IE may be included by the W-AGF acting on behalf of the FN-RG.

8.3.1.16  Service-level-AA container |R17|p. 795

This IE shall be included in the message when the UE needs to establish a PDU session for the UAS services.

8.3.1.17  Requested MBS container |R17|p. 795

This IE is included in the message when the UE requests to join one or more multicast MBS sessions that are associated with the PDU session.

8.3.1.18  PDU session pair ID |R17|p. 795

This IE shall be included in the message when the UE needs to include a PDU session pair ID.

8.3.1.19  RSN |R17|p. 795

This IE shall be included in the message when the UE needs to include an RSN.

8.3.2  PDU session establishment acceptp. 795

8.3.2.1  Message definitionp. 795

The PDU SESSION ESTABLISHMENT ACCEPT message is sent by the SMF to the UE in response to PDU SESSION ESTABLISHMENT REQUEST message and indicates successful establishment of a PDU session. See Table 8.3.2.1.1.
Message type:
PDU SESSION ESTABLISHMENT ACCEPT
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION ESTABLISHMENT ACCEPT message identityMessage type
9.7
MV1
Selected PDU session typePDU session type
9.11.4.11
MV1/2
Selected SSC modeSSC mode
9.11.4.16
MV1/2
Authorized QoS rulesQoS rules
9.11.4.13
MLV-E6-65538
Session AMBRSession-AMBR
9.11.4.14
MLV7
595GSM cause5GSM cause
9.11.4.2
OTV2
29PDU addressPDU address
9.11.4.10
OTLV7-31
56RQ timer valueGPRS timer
9.11.2.3
OTV2
22S-NSSAIS-NSSAI
9.11.2.8
OTLV3-10
8-Always-on PDU session indicationAlways-on PDU session indication
9.11.4.3
OTV1
75Mapped EPS bearer contextsMapped EPS bearer contexts
9.11.4.8
OTLV-E7-65538
78EAP messageEAP message
9.11.2.2
OTLV-E7-1503
79Authorized QoS flow descriptionsQoS flow descriptions
9.11.4.12
OTLV-E6-65538
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
25DNNDNN
9.11.2.1B
OTLV3-102
175GSM network feature support5GSM network feature support
9.11.4.18
OTLV3-15
18Serving PLMN rate controlServing PLMN rate control
9.11.4.20
OTLV4
77ATSSS containerATSSS container
9.11.4.22
OTLV-E3-65538
C-Control plane only indicationControl plane only indication
9.11.4.23
OTV1
66IP header compression configurationIP header compression configuration
9.11.4.24
OTLV5-257
1FEthernet header compression configurationEthernet header compression configuration
9.11.4.28
OTLV3
72Service-level-AA containerService-level-AA container
9.11.2.10
OTLV-E6-n
71Received MBS containerReceived MBS container
9.11.4.31
OTLV-E9-65538
70N3QAIN3QAI
9.11.4.356
OTLV-E9-n
Up

8.3.2.2  5GSM causep. 797

This IE is included when the selected PDU session type is different from the PDU session type requested by the UE.

8.3.2.3  PDU addressp. 797

This IE is included when the selected PDU session type is "IPv4", "IPv6" or "IPv4v6".

8.3.2.4  RQ timer valuep. 797

This IE is included when the network needs to provide the RQ timer value.

8.3.2.5  S-NSSAIp. 797

This IE shall be included in the message when the SMF received from the AMF an S-NSSAI together with the PDU SESSION ESTABLISHMENT REQUEST message, the PDU session is a non-emergency PDU session and the UE is not registered for onboarding services in SNPN.

8.3.2.6  Always-on PDU session indicationp. 797

The network shall include this IE if the network decides to inform the UE whether the PDU session is established as an always-on PDU session.

8.3.2.7  Mapped EPS bearer contextsp. 797

This IE is included when interworking with EPS is supported for the PDU session.

8.3.2.8  EAP messagep. 797

This IE is included when the external DN successfully performed authentication and authorization of the UE using EAP.

8.3.2.9  Authorized QoS flow descriptionsp. 797

This IE is included when the network needs to provide authorized QoS flow descriptions.

8.3.2.10  Extended protocol configuration optionsp. 797

This IE is included in the message when the network needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.2.11  DNNp. 797

The IE shall be included in the message when the PDU session is a non-emergency PDU session and the UE is not registered for onboarding services in SNPN.

8.3.2.12  5GSM network feature support |R16|p. 797

This IE is included when the network needs to indicate support of 5GSM network features.

8.3.2.13Void

8.3.2.14  Serving PLMN rate control |R16|p. 797

This IE shall be included when the network needs to indicate the maximum uplink control plane user data the UE is allowed to send per 6 minute interval.

8.3.2.15  ATSSS container |R16|p. 798

The IE shall be included in the message when the PDU session is an MA PDU session.

8.3.2.16  Control plane only indication |R16|p. 798

The network shall include the control plane only indication IE if the network determines that the associated PDU session is only for control plane CIoT 5GS optimization.

8.3.2.17  IP header compression configuration |R16|p. 798

The SMF may include the IP header compression configuration IE if:
  • the network accepts an IP PDU session type;
  • control plane CIoT 5GS optimization is selected; and
  • the UE provided the IP header compression configuration IE in the PDU SESSION ESTABLISHMENT REQUEST message.

8.3.2.18  Ethernet header compression configuration |R16|p. 798

The SMF may include the Ethernet header compression configuration IE if:
  • the network accepts an Ethernet PDU session type;
  • control plane CIoT 5GS optimization is selected; and
  • the UE provided the Ethernet header compression configuration IE in the PDU SESSION ESTABLISHMENT REQUEST message.

8.3.2.19  Service-level-AA container |R17|p. 798

The SMF shall include the service-level-AA container IE if the Service-level authentication and authorization procedure is completed successfully by the external DN.

8.3.2.20  Received MBS container |R17|p. 798

The network shall include this IE if the UE has requested to join one or more multicast MBS sessions.

8.3.2.21  N3QAI |R18|p. 798

This IE is included when the network needs to provide the N3QAI to the UE.

8.3.3  PDU session establishment rejectp. 798

8.3.3.1  Message definitionp. 798

The PDU SESSION ESTABLISHMENT REJECT message is sent by the SMF to the UE in response to PDU SESSION ESTABLISHMENT REQUEST message and indicates unsuccessful establishment of a PDU session. See Table 8.3.3.1.1.
Message type:
PDU SESSION ESTABLISHMENT REJECT
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION ESTABLISHMENT REJECT message identityMessage type
9.7
MV1
5GSM cause5GSM cause
9.11.4.2
MV1
37Back-off timer valueGPRS timer 3
9.11.2.5
OTLV3
F-Allowed SSC modeAllowed SSC mode
9.11.4.5
OTV1
78EAP messageEAP message
9.11.2.2
OTLV-E7-1503
615GSM congestion re-attempt indicator5GSM congestion re-attempt indicator
9.11.4.21
OTLV3
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
1DRe-attempt indicatorRe-attempt indicator
9.11.4.17
OTLV3
72Service-level-AA containerService-level-AA container
9.11.2.10
OTLV-E6-n
Up

8.3.3.2  Back-off timer valuep. 799

The network may include this IE if the 5GSM cause is not #28 "unknown PDU session type", #39 "reactivation requested", #46 "out of LADN service area", #50 "PDU session type IPv4 only allowed", #51 "PDU session type IPv6 only allowed", #54 "PDU session does not exist", #57 "PDU session type IPv4v6 only allowed", #58 "PDU session type Unstructured only allowed", #61 "PDU session type Ethernet only allowed", or #68 "not supported SSC mode", to request a minimum time interval before procedure retry is allowed.
Up

8.3.3.3  Allowed SSC modep. 799

This IE is included when the network rejects the PDU SESSION ESTABLISHMENT REQUEST with cause #68 "not supported SSC mode".

8.3.3.4  EAP messagep. 799

This IE is included when the external DN unsuccessfully performed authentication and authorization of the UE using EAP.

8.3.3.4A  5GSM congestion re-attempt indicator |R16|p. 799

The network may include this IE only if it includes the Back-off timer value IE and the 5GSM cause value is either #67 "insufficient resources for specific slice and DNN" or #69 "insufficient resources for specific slice".

8.3.3.5  Extended protocol configuration optionsp. 799

This IE is included in the message when the network needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.3.6  Re-attempt indicatorp. 800

The network may include this IE if the network includes the Back-off timer value IE and the 5GSM cause value is not #26 "insufficient resources", #28 "unknown PDU session type", #39 "reactivation requested", #46 "out of LADN service area", #54 "PDU session does not exist", #67 "insufficient resources for specific slice and DNN", #68 "not supported SSC mode", or #69 "insufficient resources for specific slice".
Up

8.3.3.7  Service-level-AA container |R17|p. 800

The network shall include this IE if the service-level authentication and authorization procedure has completed unsuccessfully and the 5GSM cause is #29 "user authentication or authorization failed". The network shall include the service-level-AA response if provided by the DN in the service-level-AA container.

8.3.4  PDU session authentication commandp. 800

8.3.4.1  Message definitionp. 800

The PDU SESSION AUTHENTICATION COMMAND message is sent by the SMF to the UE for authentication of the UE establishing the PDU session or of the UE participating in the PDU session. See Table 8.3.4.1.1.
Message type:
PDU SESSION AUTHENTICATION COMMAND
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION AUTHENTICATION COMMAND message identityMessage type
9.7
MV1
EAP messageEAP message
9.11.2.2
MLV-E6-1502
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
Up

8.3.4.2  Extended protocol configuration optionsp. 800

This IE is included in the message when the network needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.4.3Void

8.3.5  PDU session authentication completep. 801

8.3.5.1  Message definitionp. 801

The PDU SESSION AUTHENTICATION COMPLETE message is sent by the UE to the SMF in response to the PDU SESSION AUTHENTICATION COMMAND message and indicates acceptance of the PDU SESSION AUTHENTICATION COMMAND message. See Table 8.3.5.1.1.
Message type:
PDU SESSION AUTHENTICATION COMPLETE
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION AUTHENTICATION COMPLETE message identityMessage type
9.7
MV1
EAP messageEAP message
9.11.2.2
MLV-E6-1502
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
Up

8.3.5.2  Extended protocol configuration optionsp. 801

This IE is included in the message when the UE needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the network.

8.3.5.3Void

8.3.6  PDU session authentication resultp. 801

8.3.6.1  Message definitionp. 801

The PDU SESSION AUTHENTICATION RESULT message is sent by the SMF to the UE for indication of successful result of authentication of the UE participating in the PDU session. See Table 8.3.6.1.1.
Message type:
PDU SESSION AUTHENTICATION RESULT
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION AUTHENTICATION RESULT message identityMessage type
9.7
MV1
78EAP messageEAP message
9.11.2.2
OTLV-E7-1503
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
Up

8.3.6.2  EAP messagep. 802

This IE shall be included when the external DN performs authentication and authorization of the UE using EAP and it completes successfully.

8.3.6.3  Extended protocol configuration optionsp. 802

This IE is included in the message when the network needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.7  PDU session modification requestp. 802

8.3.7.1  Message definitionp. 802

The PDU SESSION MODIFICATION REQUEST message is sent by the UE to the SMF to request a modification of a PDU session. See Table 8.3.7.1.1.
Message type:
PDU SESSION MODIFICATION REQUEST
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION MODIFICATION REQUEST message identityMessage type
9.7
MV1
285GSM capability5GSM capability
9.11.4.1
OTLV3-15
595GSM cause5GSM cause
9.11.4.2
OTV2
55Maximum number of supported packet filtersMaximum number of supported packet filters
9.11.4.9
OTV3
B-Always-on PDU session requestedAlways-on PDU session requested
9.11.4.4
OTV1
13Integrity protection maximum data rateIntegrity protection maximum data rate
9.11.4.7
OTV3
7ARequested QoS rulesQoS rules
9.11.4.13
OTLV-E7-65538
79Requested QoS flow descriptionsQoS flow descriptions
9.11.4.12
OTLV-E6-65538
75Mapped EPS bearer contextsMapped EPS bearer contexts
9.11.4.8
OTLV-E7-65538
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
74Port management information containerPort management information container
9.11.4.27
OTLV-E4-65538
66IP header compression configurationHeader compression configuration
9.11.4.24
OTLV5-257
1FEthernet header compression configurationEthernet header compression configuration
9.11.4.28
OTLV3
70Requested MBS containerRequested MBS container
9.11.4.30
OTLV-E8-65538
72Service-level-AA containerService-level-AA container
9.11.2.10
OTLV-E6-n
73Non-3GPP delay budgetNon-3GPP delay budget
9.11.4.37
OTLV-E6-n
Up

8.3.7.2  5GSM capabilityp. 803

This IE is included in the message:
  1. for a PDN connection established when in S1 mode, after an inter-system change from S1 mode to N1 mode, if the UE is a UE operating in single-registration mode in a network supporting N26 interface, the UE has not previously successfully performed the UE-requested PDU session modification to provide this capability, and:
    1. if the PDU session is of "IPv4", "IPv6", "IPv4v6" or "Ethernet" PDU session type, and the UE supports reflective QoS; or
    2. if the PDU session is of "IPv6" or "IPv4v6" PDU session type, and the UE supports multi-homed IPv6 PDU session; or
  2. if the UE needs to revoke the previously indicated support of reflective QoS.
Up

8.3.7.3  5GSM causep. 804

This IE is included in the message to indicate the reason for the deletion of one or more non-default QoS rules, QoS flow descriptions or mapped EPS bearer contexts.

8.3.7.4  Maximum number of supported packet filtersp. 804

This IE shall be included in the message for a PDN connection established when in S1 mode, after an inter-system change from S1 mode to N1 mode, if the UE is a UE operating in single-registration mode in a network supporting N26 interface, the UE has not previously successfully performed the UE-requested PDU session modification to provide this capability, the PDU session type is "IPv4", "IPv6", "IPv4v6" or "Ethernet", and the UE can support more than 16 packet filters for this PDU session.
Up

8.3.7.5  Always-on PDU session requestedp. 804

This IE shall be included in the message for a PDN connection established when in S1 mode, after an inter-system change from S1 mode to N1 mode, if the UE is a UE operating in single-registration mode in a network supporting N26 interface, the UE has not previously successfully performed the UE-requested PDU session modification to provide this capability, and the UE requests the PDU session to be an always-on PDU session in the 5GS.

8.3.7.6  Integrity protection maximum data ratep. 804

This IE shall be included in the message for a PDN connection established when in S1 mode, after an inter-system change from S1 mode to N1 mode, if the UE is a UE operating in single-registration mode in a network supporting N26 interface, and the UE has not previously successfully performed the UE-requested PDU session modification to provide this capability.

8.3.7.7  Requested QoS rulesp. 804

This IE is included in the message when the UE requests a specific QoS handling.

8.3.7.8  Requested QoS flow descriptionsp. 804

This IE is included in the message when the UE requests a specific QoS flow descriptions.

8.3.7.9  Extended protocol configuration optionsp. 804

This IE is included in the message when the UE needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the network.

8.3.7.10  Mapped EPS bearer contextsp. 804

This IE is included when the UE requests to delete one or more mapped EPS bearer contexts.

8.3.7.11  Port management information container |R16|p. 804

This IE shall be included when the UE needs to convey a port management information container.

8.3.7.12  IP header compression configuration |R16|p. 804

This IE is included in the message:
  1. if the UE wishes to re-negotiate IP header compression configuration associated to a PDU session and both the UE and the network supports Control plane CIoT 5GS optimization and IP header compression; or
  2. to negotiate IP header compression configuration associated to a PDU session after an inter-system change from S1 mode to N1 mode when both the UE and the network support control plane CIoT 5GS optimization and IP header compression, and the UE is operating in single-registration mode in the network supporting N26 interface.
Up

8.3.7.13  Ethernet header compression configuration |R16|p. 805

This IE is included in the message:
  1. if the UE wishes to re-negotiate Ethernet header compression configuration associated to a PDU session and both the UE and the network support Control plane CIoT 5GS optimization and Ethernet header compression; or
  2. to negotiate Ethernet header compression configuration associated to a PDU session after an inter-system change from S1 mode to N1 mode.

8.3.7.14  Requested MBS container |R17|p. 805

This IE is included in the message when the UE requests to join or leave one or more multicast MBS sessions that are associated with the PDU session.

8.3.7.15  Service-level-AA container |R17|p. 805

This IE shall be included in the message when the UE needs to modify an established PDU session for C2 communication.

8.3.7.16  Non-3GPP delay budget |R18|p. 805

This IE is included in the message when the UE requests a specific QoS handling for the PDU session established for PIN.

8.3.8  PDU session modification rejectp. 805

8.3.8.1  Message definitionp. 805

The PDU SESSION MODIFICATION REJECT message is sent by the SMF to the UE to indicate rejection of the PDU SESSION MODIFICATION REQUEST. See Table 8.3.8.1.1.
Message type:
PDU SESSION MODIFICATION REJECT
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION MODIFICATION REJECT message identityMessage type
9.7
MV1
5GSM cause5GSM cause
9.11.4.2
MV1
37Back-off timer valueGPRS timer 3
9.11.2.5
OTLV3
615GSM congestion re-attempt indicator5GSM congestion re-attempt indicator
9.11.4.21
OTLV3
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
1DRe-attempt indicatorRe-attempt indicator
9.11.4.17
OTLV3
Up

8.3.8.2  Back-off timer valuep. 806

The network may include this IE if the 5GSM cause is not #26 "insufficient resources", #37 "5GS QoS not accepted", #44 "Semantic errors in packet filter(s)", #45 "Syntactical error in packet filter(s)", #46 "out of LADN service area", #59 "unsupported 5QI value", #67 "insufficient resources for specific slice and DNN", #69 "insufficient resources for specific slice", #83 "Semantic error in the QoS operation", or #84 "Syntactical error in the QoS operation" to request a minimum time interval before procedure retry is allowed.
Up

8.3.8.2A  5GSM congestion re-attempt indicator |R16|p. 806

The network may include this IE only if it includes the Back-off timer value IE and the 5GSM cause value is either #67 "insufficient resources for specific slice and DNN" or #69 "insufficient resources for specific slice".

8.3.8.3  Extended protocol configuration optionsp. 806

This IE is included in the message when the network needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.8.4  Re-attempt indicatorp. 806

The network may include this IE only if it includes the Back-off timer value IE and the 5GSM cause value is not #26 "insufficient resources", #37 "5GS QoS not accepted", #44 "Semantic errors in packet filter(s)", #45 "Syntactical error in packet filter(s)", #46 "out of LADN service area", #59 "unsupported 5QI value", #67 "insufficient resources for specific slice and DNN", #69 "insufficient resources for specific slice", #83 "Semantic error in the QoS operation", or #84 "Syntactical error in the QoS operation".
Up

8.3.9  PDU session modification commandp. 806

8.3.9.1  Message definitionp. 806

The PDU SESSION MODIFICATION COMMAND message is sent by the SMF to the UE to indicate a modification of a PDU session. See Table 8.3.9.1.1
Message type:
PDU SESSION MODIFICATION COMMAND
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION MODIFICATION COMMAND message identityMessage type
9.7
MV1
595GSM cause5GSM cause
9.11.4.2
OTV2
2ASession AMBRSession-AMBR
9.11.4.14
OTLV8
56RQ timer valueGPRS timer
9.11.2.3
OTV2
8-Always-on PDU session indicationAlways-on PDU session indication
9.11.4.3
OTV1
7AAuthorized QoS rulesQoS rules
9.11.4.13
OTLV-E7-65538
75Mapped EPS bearer contextsMapped EPS bearer contexts
9.11.4.8
OTLV-E7-65538
79Authorized QoS flow descriptionsQoS flow descriptions
9.11.4.12
OTLV-E6-65538
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
77ATSSS containerATSSS container
9.11.4.22
OTLV-E3-65538
66IP header compression configurationIP header compression configuration
9.11.4.24
OTLV5-257
74Port management information containerPort management information container
9.11.4.27
OTLV-E4-65538
1EServing PLMN rate controlServing PLMN rate control
9.11.4.20
OTLV4
1FEthernet header compression configurationEthernet header compression configuration
9.11.4.28
OTLV3
71Received MBS containerReceived MBS container
9.11.4.31
OTLV-E9-65538
72Service-level-AA containerService-level-AA container
9.11.2.10
OTLV-E6-n
5AAlternative S-NSSAIS-NSSAI
9.11.2.8
OTLV3-10
70N3QAIN3QAI
9.11.4.36
OTLV-E9-n
Up

8.3.9.2  5GSM causep. 807

This IE is included when the network performs the PDU session anchor relocation for SSC mode 3.

8.3.9.3  Session-AMBRp. 807

This IE is included when the session-AMBR of the PDU session is modified.

8.3.9.4  RQ timer valuep. 808

This IE is included when the network needs to provide the RQ timer value.

8.3.9.5  Always-on PDU session indicationp. 808

The network shall include this IE if the network decides to inform the UE whether the PDU session is an always-on PDU session.

8.3.9.6  Authorized QoS rulesp. 808

This IE is included when the authorized QoS rules of the PDU session are modified.

8.3.9.7  Mapped EPS bearer contextsp. 808

This IE is included when interworking with EPS is supported for the PDU session and the mapped EPS bearer contexts is modified.

8.3.9.8  Authorized QoS flow descriptionsp. 808

This IE is included when the authorized QoS flow descriptions of the PDU session are modified.

8.3.9.9  Extended protocol configuration optionsp. 808

This IE is included in the message when the network needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.9.10Void

8.3.9.11  ATSSS container |R16|p. 808

The IE is included in the message when the network needs to indicate that the ATSSS parameters of the MA PDU session are modified.

8.3.9.12  IP header compression configuration |R16|p. 808

This IE is included in the message if the network wishes to re-negotiate IP header compression configuration associated to a PDU session and both the UE and the network support Control plane CIoT 5GS optimization and IP header compression.

8.3.9.13  Port management information container |R16|p. 808

This IE shall be included when the network needs to convey a port management information container.

8.3.9.14  Serving PLMN rate control |R16|p. 808

This IE shall be included when the network needs to indicate the maximum uplink control plane user data the UE is allowed to send per 6 minute interval.

8.3.9.15  Ethernet header compression configuration |R16|p. 808

This IE is included in the message if the network wishes to re-negotiate Ethernet header compression configuration associated to a PDU session and both the UE and the network support Control plane CIoT 5GS optimization and Ethernet header compression.

8.3.9.16  Received MBS container |R17|p. 809

The network shall include this IE if:
  • the UE has requested to join or leave one or more multicast MBS sessions;
  • the network wants to remove joined UE from one or more multicast MBS sessions; or
  • the network wants to update the MBS service area of multicast MBS session that the UE has joined; or
  • the network wants to update the MBS security information of multicast MBS session that the UE has joined.

8.3.9.17  Service-level-AA container |R17|p. 809

The SMF shall include the service-level-AA container IE if the service-level authentication and authorization procedure for re-authentication purpose is completed successfully by the external DN.

8.3.9.18  Alternative S-NSSAI |R18|p. 809

This IE shall be included when the network needs to provide the alternative S-NSSAI to replace the S-NSSAI of the SSC mode 1 or SSC mode 3 PDU session.

8.3.9.19  N3QAI |R18|p. 809

This IE is included when the network needs to provide the N3QAI to the UE.

8.3.10  PDU session modification completep. 809

8.3.10.1  Message definitionp. 809

The PDU SESSION MODIFICATION COMPLETE message is sent by the UE to the SMF in response to the PDU SESSION MODIFICATION COMMAND message and indicates an acceptance of the PDU SESSION MODIFICATION COMMAND message. See Table 8.3.10.1.1.
Message type:
PDU SESSION MODIFICATION COMPLETE
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION MODIFICATION COMPLETE message identityMessage type
9.7
MV1
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
74Port management information containerPort management information container
9.11.4.27
OTLV-E4-65538
Up

8.3.10.2  Extended protocol configuration optionsp. 810

This IE is included in the message when the UE needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the network.

8.3.10.3  Port management information container |R16|p. 810

This IE shall be included when the UE needs to convey a port management information container.

8.3.11  PDU session modification command rejectp. 810

8.3.11.1  Message definitionp. 810

The PDU SESSION MODIFICATION COMMAND REJECT message is sent by the UE to the SMF to indicate rejection of the PDU SESSION MODIFICATION COMMAND message. See Table 8.3.11.1.1.
Message type:
PDU SESSION MODIFICATION COMMAND REJECT
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION MODIFICATION COMMAND REJECT message identityMessage type
9.7
MV1
5GSM cause5GSM cause
9.11.4.2
MV1
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
Up

8.3.11.2  Extended protocol configuration optionsp. 810

This IE is included in the message when the UE needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the network.

8.3.12  PDU session release requestp. 810

8.3.12.1  Message definitionp. 810

The PDU SESSION RELEASE REQUEST message is sent by the UE to the SMF to request a release of a PDU session. See Table 8.3.12.1.1.
Message type:
PDU SESSION RELEASE REQUEST
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION RELEASE REQUEST message identityMessage type
9.7
MV1
595GSM cause5GSM cause
9.11.4.2
OTV2
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
Up

8.3.12.2  5GSM causep. 811

This IE is included in the message to indicate the reason for releasing the PDU session.

8.3.12.3  Extended protocol configuration optionsp. 811

This IE is included in the message when the UE needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the network.

8.3.13  PDU session release rejectp. 811

8.3.13.1  Message definitionp. 811

The PDU SESSION RELEASE REJECT message is sent by the SMF to the UE to indicate rejection of request a release of a PDU session. See Table 8.3.13.1.1.
Message type:
PDU SESSION RELEASE REJECT
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION RELEASE REJECT message identityMessage type
9.7
MV1
5GSM cause5GSM cause
9.11.4.2
MV1
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
Up

8.3.13.2  Extended protocol configuration optionsp. 812

This IE is included in the message when the network needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.14  PDU session release commandp. 812

8.3.14.1  Message definitionp. 812

The PDU SESSION RELEASE COMMAND message is sent by the SMF to the UE to indicate a release of a PDU session. See Table 8.3.14.1.1.
Message type:
PDU SESSION RELEASE COMMAND
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION RELEASE COMMAND message identityMessage type
9.7
MV1
5GSM cause5GSM cause
9.11.4.2
MV1
37Back-off timer valueGPRS timer 3
9.11.2.5
OTLV3
78EAP messageEAP message
9.11.2.2
OTLV-E7-1503
615GSM congestion re-attempt indicator5GSM congestion re-attempt indicator
9.11.4.21
OTLV3
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
D-Access typeAccess type
9.11.2.1A
OTV1
72Service-level-AA containerService-level-AA container
9.11.2.10
OTLV-E6-n
5AAlternative S-NSSAIS-NSSAI
9.11.2.8
OTLV3-10
Up

8.3.14.2  Back-off timer valuep. 812

The network may include this IE to request a minimum time interval before procedure retry is allowed.

8.3.14.3  EAP messagep. 812

This IE is included when the external DN performs re-authentication and re-authorization of the UE using EAP and it completes unsuccessfully.

8.3.14.4  Extended protocol configuration optionsp. 812

This IE is included in the message when the network wants to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the UE.

8.3.14.5  5GSM congestion re-attempt indicatorp. 813

The network may include this IE only if it includes the Back-off timer value IE and the 5GSM cause value is either #67 "insufficient resources for specific slice and DNN" or #69 "insufficient resources for specific slice".

8.3.14.6  Access type |R16|p. 813

This IE is included in the message when the network releases user-plane reources of an MA PDU session specifically over either 3GPP access or non-3GPP access.

8.3.14.7  Service-level-AA container |R17|p. 813

The SMF shall include the service-level-AA container IE if the service-level authentication and authorization procedure for re-authentication purpose is completed unsuccessfully by the external DN.

8.3.14.8  Alternative S-NSSAI |R18|p. 813

This IE shall be included when the network needs to trigger the re-establishment of the PDU Session with the alternative S-NSSAI in SSC mode 2 or SSC mode 1.

8.3.15  PDU session release completep. 813

8.3.15.1  Message definitionp. 813

The PDU SESSION RELEASE COMPLETE message is sent by the UE to the SMF in response to the PDU SESSION RELEASE COMMAND message and indicates an acceptance of a release of the PDU session. See Table 8.3.15.1.1.
Message type:
PDU SESSION RELEASE COMPLETE
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
PDU SESSION RELEASE COMPLETE message identityMessage type
9.7
MV1
595GSM cause5GSM cause
9.11.4.2
OTV2
7BExtended protocol configuration optionsExtended protocol configuration options
9.11.4.6
OTLV-E4-65538
Up

8.3.15.2  5GSM causep. 813

This IE is included in the message when the UE needs to indicate to the network that an error encountered with a mandatory information element in the PDU SESSION RELEASE COMMAND message.

8.3.15.3  Extended protocol configuration optionsp. 813

This IE is included in the message when the UE needs to transmit (protocol) data (e.g. configuration parameters, error codes or messages/events) to the network.

8.3.16  5GSM statusp. 814

8.3.16.1  Message definitionp. 814

The 5GSM STATUS message is sent by the SMF or the UE to pass information on the status of the indicated PDU session and report certain error conditions. See Table 8.3.16.1.1.
Message type:
5GSM STATUS
Significance:
dual
Direction:
both
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
5GSM STATUS message identityMessage type
9.7
MV1
5GSM cause5GSM cause
9.11.4.2
MV1
Up

8.3.17  Service-level authentication command |R17|p. 814

8.3.17.1  Message definitionp. 814

The SERVICE-LEVEL AUTHENTICATION COMMAND message is sent by the SMF to the UE for service-level authentication and authorization procedure. See Table 8.3.17.1.1.
Message type:
SERVICE-LEVEL AUTHENTICATION COMMAND
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
SERVICE-LEVEL AUTHENTICATION COMMAND message identityMessage type
9.7
MV1
Service-level-AA containerService-level-AA container
9.11.2.10
MLV-E5-n
Up

8.3.18  Service-level authentication complete |R17|p. 815

8.3.18.1  Message definitionp. 815

The SERVICE-LEVEL AUTHENTICATION COMPLETE message is sent by the UE to the SMF in response to the SERVICE-LEVEL AUTHENTICATION COMMAND message and indicates acceptance of the SERVICE-LEVEL AUTHENTICATION COMMAND message. See Table 8.3.18.1.1.
Message type:
SERVICE-LEVEL AUTHENTICATION COMPLETE
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
SERVICE-LEVEL AUTHENTICATION COMPLETE message identityMessage type
9.7
MV1
Service-level-AA containerService-level-AA container
9.11.2.10
MLV-E5-n
Up

8.3.19  Remote UE report |R17|p. 815

8.3.19.1  Message definitionp. 815

The REMOTE UE REPORT message is sent by the UE to the network to report connection or disconnection of 5G ProSe remote UE(s). See Table 8.3.19.1.
Message type:
REMOTE UE REPORT
Significance:
dual
Direction:
UE to network
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
Remote UE report message identityMessage type
9.7
MV1
76Remote UE context connectedRemote UE context list
9.11.4.29
OTLV-E16-65538
70Remote UE context disconnectedRemote UE context list
9.11.4.29
OTLV-E16-65538
Up

8.3.19.2  Remote UE context connectedp. 816

This IE is included in the message by the UE acting as a 5G ProSe layer-3 UE-to-network UE relay to provide the network with newly connected 5G ProSe remote UE information as specified in TS 23.304.

8.3.19.3  Remote UE context disconnectedp. 816

This IE is included in the message by the UE acting as a 5G ProSe layer-3 UE-to-network UE relay to provide the network with disconnected 5G ProSe remote UE information as specified in TS 23.304.

8.3.20  Remote UE report response |R17|p. 816

8.3.20.1  Message definitionp. 816

The REMOTE UE REPORT RESPONSE message is sent by the network to the UE to acknowledge receipt of a remote UE report message. See Table 8.3.20.1.
Message type:
REMOTE UE REPORT RESPONSE
Significance:
dual
Direction:
network to UE
IEI Information Element Type/Reference Presence Format Length
Extended protocol discriminatorExtended protocol discriminator
9.2
MV1
PDU session IDPDU session identity
9.4
MV1
PTIProcedure transaction identity
9.6
MV1
Remote UE report response message identityMessage type
9.7
MV1
Up

8.3.20.2Void

8.3.20.3Void

8.3.20.4Void


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