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Content for  TS 24.501  Word version:  18.0.1

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8.3  5GS session management messagesp. 683

8.3.1  PDU session establishment requestp. 683

8.3.1.1  Message definitionp. 683

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. 684

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

8.3.1.3  SSC modep. 685

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. 685

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. 685

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. 685

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. 685

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. 685

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. 685

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. 685

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. 685

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. 686

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. 686

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. 686

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. 686

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. 686

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

8.3.1.18  PDU session pair ID |R17|p. 686

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. 686

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

8.3.2  PDU session establishment acceptp. 686

8.3.2.1  Message definitionp. 686

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
Up

8.3.2.2  5GSM causep. 687

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. 688

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

8.3.2.4  RQ timer valuep. 688

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

8.3.2.5  S-NSSAIp. 688

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. 688

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. 688

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

8.3.2.8  EAP messagep. 688

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. 688

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

8.3.2.10  Extended protocol configuration optionsp. 688

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. 688

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. 688

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. 688

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. 688

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. 689

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. 689

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. 689

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. 689

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. 689

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

8.3.3  PDU session establishment rejectp. 689

8.3.3.1  Message definitionp. 689

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. 690

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. 690

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. 690

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. 690

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. 690

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. 691

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. 691

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. 691

8.3.4.1  Message definitionp. 691

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. 691

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. 692

8.3.5.1  Message definitionp. 692

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. 692

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. 692

8.3.6.1  Message definitionp. 692

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. 693

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. 693

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. 693

8.3.7.1  Message definitionp. 693

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
Up

8.3.7.2  5GSM capabilityp. 694

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. 695

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. 695

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. 695

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. 695

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. 695

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

8.3.7.8  Requested QoS flow descriptionsp. 695

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

8.3.7.9  Extended protocol configuration optionsp. 695

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. 695

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. 695

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. 695

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. 696

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. 696

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

8.3.7.15  Service-level-AA container |R17|p. 696

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

8.3.8  PDU session modification rejectp. 696

8.3.8.1  Message definitionp. 696

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. 697

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. 697

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. 697

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. 697

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. 697

8.3.9.1  Message definitionp. 697

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
Up

8.3.9.2  5GSM causep. 698

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

8.3.9.3  Session-AMBRp. 698

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

8.3.9.4  RQ timer valuep. 698

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

8.3.9.5  Always-on PDU session indicationp. 699

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. 699

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

8.3.9.7  Mapped EPS bearer contextsp. 699

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. 699

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

8.3.9.9  Extended protocol configuration optionsp. 699

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. 699

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. 699

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. 699

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. 699

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. 699

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. 699

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

8.3.9.17  Service-level-AA container |R17|p. 700

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.

8.3.10  PDU session modification completep. 700

8.3.10.1  Message definitionp. 700

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. 700

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. 700

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

8.3.11  PDU session modification command rejectp. 700

8.3.11.1  Message definitionp. 700

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. 701

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. 701

8.3.12.1  Message definitionp. 701

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. 702

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

8.3.12.3  Extended protocol configuration optionsp. 702

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. 702

8.3.13.1  Message definitionp. 702

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. 702

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. 702

8.3.14.1  Message definitionp. 702

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
Up

8.3.14.2  Back-off timer valuep. 703

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

8.3.14.3  EAP messagep. 703

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. 703

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. 703

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. 703

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. 703

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.

8.3.15  PDU session release completep. 704

8.3.15.1  Message definitionp. 704

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. 704

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. 704

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. 704

8.3.16.1  Message definitionp. 704

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. 705

8.3.17.1  Message definitionp. 705

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. 705

8.3.18.1  Message definitionp. 705

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. 706

8.3.19.1  Message definitionp. 706

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. 706

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. 706

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. 707

8.3.20.1  Message definitionp. 707

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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