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Content for  TS 24.501  Word version:  17.5.0

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3  Definitions and abbreviationsWord‑p. 29

3.1  DefinitionsWord‑p. 29

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
5GMM-IDLE mode:
In this specification, if the term is used standalone, a UE in 5GMM-IDLE mode means the UE can be either in 5GMM-IDLE mode over 3GPP access or in 5GMM-IDLE mode over non-3GPP access.
5GMM-CONNECTED mode:
In this specification, if the term is used standalone, a UE in 5GMM-CONNECTED mode means the UE can be either in 5GMM-CONNECTED mode over 3GPP access or in 5GMM-CONNECTED mode over non-3GPP access.
5GMM-IDLE mode over 3GPP access:
A UE is in 5GMM-IDLE mode over 3GPP access when no N1 NAS signalling connection between the UE and network over 3GPP access exists. The term 5GMM-IDLE mode over 3GPP access used in the present document corresponds to the term CM-IDLE state for 3GPP access used in TS 23.501.
5GMM-CONNECTED mode over 3GPP access:
A UE is in 5GMM-CONNECTED mode over 3GPP access when an N1 NAS signalling connection between the UE and network over 3GPP access exists. The term 5GMM-CONNECTED mode over 3GPP access used in the present document corresponds to the term CM-CONNECTED state for 3GPP access used in TS 23.501.
5GMM-IDLE mode over non-3GPP access:
A UE is in 5GMM-IDLE mode over non-3GPP access when no N1 NAS signalling connection between the UE and network over non-3GPP access exists. The term 5GMM-IDLE mode over non-3GPP access used in the present document corresponds to the term CM-IDLE state for non-3GPP access used in TS 23.501.
5GMM-CONNECTED mode over non-3GPP access:
A UE is in 5GMM-CONNECTED mode over non-3GPP access when an N1 NAS signalling connection between the UE and network over non-3GPP access exists. The term 5GMM-CONNECTED mode over non-3GPP access used in the present document corresponds to the term CM-CONNECTED state for non-3GPP access used in TS 23.501.
5GS services:
Services provided by PS domain. Within the context of this specification, 5GS services is used as a synonym for EPS services.
5G-EA:
5GS encryption algorithms. The term 5G-EA, 5G-EA0, 128-5G-EA1, 128-5G-EA2, 128-5G-EA3, 5G-EA4, 5G-EA5, 5G-EA6 and 5G-EA7 used in the present document corresponds to the term NEA, NEA0, 128-NEA1, 128-NEA2, 128-NEA3, NEA4, NEA5, NEA6 and NEA7 defined in TS 33.501.
5G-IA:
5GS integrity algorithms. The term 5G-IA, 5G-IA0, 128-5G-IA1, 128-5G-IA2, 128-5G-IA3, 5G-IA4, 5G-IA5, 5G-IA6 and 5G-IA7 used in the present document corresponds to the term NIA, NIA0, 128-NIA1, 128-NIA2, 128-NIA3, NIA4, NIA5, NIA6 and NIA7 defined in TS 33.501.
Access stratum connection:
A peer to peer access stratum connection:
  • between the UE and the NG-RAN for 3GPP access;
  • between the UE and the N3IWF for untrusted non-3GPP access;
  • between the UE and the TNGF for trusted non-3GPP access used by the UE;
  • within the TWIF acting on behalf of the N5CW device for trusted non-3GPP access used by the N5CW device;
  • between the 5G-RG and the W-AGF for wireline access used by the 5G-RG;
  • within the W-AGF acting on behalf of the FN-RG for wireline access used by the FN-RG; or
  • within the W-AGF acting on behalf of the N5GC device for wireline access used by the N5GC device.
The access stratum connection for 3GPP access corresponds to an RRC connection via the Uu reference point. The creation of the access stratum connection for untrusted non-3GPP access corresponds to the completion of the IKE_SA_INIT exchange (see RFC 7296) via the NWu reference point. The creation of the access stratum connection for trusted non-3GPP access used by the UE corresponds to the UE reception of an EAP-request/5G-start via NWt reference point (see TS 23.502). The creation of the access stratum connection for trusted non-3GPP access used by the N5CW device corresponds to the TWIF's start of acting on behalf of the N5CW device. The creation of the access stratum connection for wireline access used by the 5G-RG corresponds to the 5G-RG reception of an EAP-request/5G-packet over the W-CP EAP connection via the Y4 reference point (see TS 23.316). The creation of the access stratum connection for wireline access used by the FN-RG corresponds to the W-AGF's start of acting on behalf of the FN-RG. The creation of the access stratum connection for wireline access used by the N5GC device corresponds to the W-AGF's start of acting on behalf of the N5GC device.
Access to SNPN services via a PLMN/To access SNPN services via a PLMN:
A UE is accessing SNPN services via a PLMN when the UE is connecting to the 5GCN of the SNPN using the 3GPP access of the PLMN.
Aggregate maximum bit rate:
The maximum bit rate that limits the aggregate bit rate of a set of non-GBR bearers of a UE. Definition derived from TS 23.501.
Always-on PDU session:
A PDU session for which user-plane resources have to be established during every transition from 5GMM-IDLE mode to 5GMM-CONNECTED mode. A UE requests a PDU session to be established as an always-on PDU session based on indication from upper layers and the network decides whether a PDU session is established as an always-on PDU session.
Applicable UE radio capability ID for the current UE radio configuration in the selected network:
The UE has an applicable UE radio capability ID for the current UE radio configuration in the selected network if:
  1. the UE supports RACS; and
  2. the UE has:
    1. a stored network-assigned UE radio capability ID which is associated with the PLMN ID or SNPN identity of the serving network and which maps to the set of radio capabilities currently enabled at the UE; or
    2. a manufacturer-assigned UE radio capability ID which maps to the set of radio capabilities currently enabled at the UE.
CAG cell:
A cell in which only members of the CAG can get normal service. Depending on local regulation, the CAG cell can provide emergency services also to subscribers who are not members of the CAG.
CAG-ID:
A CAG-ID is a unique identifier within the scope of one PLMN defined in TS 23.003 which identifies a Closed Access Group (CAG) in the PLMN associated with a cell or group of cells to which access is restricted to members of the CAG.
CAG restrictions:
Restrictions applied to a UE in accessing a PLMN's 5GCN via:
  1. a non-CAG cell if the entry for the PLMN in the UE's "CAG information list" includes an "indication that the UE is only allowed to access 5GS via CAG cells"; or
  2. a CAG cell if none of the CAG-ID(s) supported by the CAG cell is included in the "allowed CAG list" for the PLMN in the UE's "CAG information list".
The CAG restrictions are not applied in a PLMN when a UE accesses the PLMN due to emergency services.
Cleartext IEs:
Information elements that can be sent without confidentiality protection in initial NAS messages as specified in subclause 4.4.6.
Configuration of SNPN subscription parameters in PLMN via the user plane:
Configuration of a UE in a PLMN with one or more entries of the "list of subscriber data" via the user plane.
Control plane CIoT 5GS optimization:
Signalling optimizations to enable efficient transport of user data (IP, Ethernet, Unstructured or SMS) over control plane via the AMF including optional header compression of IP data and Ethernet data.
DNN determined by the AMF:
If no DNN requested by the UE is provided, a DNN determined by the AMF based subscription information or local policy. Otherwise DNN determined by the AMF is the DNN requested by the UE.
DNN requested by the UE:
A DNN explicitly requested by the UE and included in a NAS request message.
DNN selected by the network:
If DNN replacement applies, a DNN selected and indicated to the AMF by PCF. Otherwise DNN selected by the network is the DNN determined by the AMF.
Default S-NSSAI:
An S-NSSAI in the subscribed S-NSSAIs marked as default.
Globally-unique SNPN identity:
An SNPN identity with an NID whose assignment mode is not set to 1 (see TS 23.003).
User plane CIoT 5GS optimization:
Signalling optimizations to enable efficient transport of user data (IP, Ethernet or Unstructured) over the user plane.
UE supporting CIoT 5GS optimizations:
A UE that supports control plane CIoT 5GS optimization or user plane CIoT 5GS optimization and one or more other CIoT 5GS optimizations when the UE is in N1 mode.
Registered for 5GS services with control plane CIoT 5GS optimization:
A UE supporting CIoT 5GS optimizations is registered for 5GS services, and control plane CIoT 5GS optimization along with one or more other CIoT 5GS optimizations have been accepted by the network.
Registered for 5GS services with user plane CIoT 5GS optimization:
A UE supporting CIoT 5GS optimizations is registered for 5GS services, and user plane CIoT 5GS optimization along with one or more other CIoT 5GS optimizations have been accepted by the network.
Registered for 5GS services with CIoT 5GS optimization:
A UE is registered for 5GS services with control plane CIoT 5GS optimization or registered for 5GS services with user plane CIoT 5GS optimization.
DNN based congestion control:
Type of congestion control at session management level that is applied to reject session management requests from UEs or release PDU sessions when the associated DNN is congested. DNN based congestion control can be activated at the SMF over session management level and also activated at the AMF over mobility management level.
Emergency PDU session:
A PDU session established with the request type "initial emergency request" or "existing emergency PDU session".
General NAS level congestion control:
Type of congestion control at mobility management level that is applied at a general overload or congestion situation in the network, e.g. lack of processing resources.
Initial NAS message:
A NAS message is considered as an initial NAS message, if this NAS message can trigger the establishment of an N1 NAS signalling connection. For instance, the REGISTRATION REQUEST message is an initial NAS message.
Initial registration for emergency services:
A registration performed with 5GS registration type "emergency registration" in the REGISTRATION REQUEST message.
Initial registration for onboarding services in SNPN:
A registration performed with 5GS registration type "SNPN onboarding registration" in the REGISTRATION REQUEST message.
Initial registration for disaster roaming services:
A registration performed with 5GS registration type "disaster roaming initial registration" in the REGISTRATION REQUEST message.
Last visited registered TAI:
A TAI which is contained in the registration area that the UE registered to the network and which identifies the tracking area last visited by the UE.
Mapped S-NSSAI:
An S-NSSAI in the subscribed S-NSSAIs for the HPLMN, which is mapped to an S-NSSAI of the registered PLMN in case of a roaming scenario.
Mobility registration for disaster roaming services:
A registration performed with 5GS registration type "disaster roaming mobility registration updating" in the REGISTRATION REQUEST message.
Multi-USIM UE:
A UE with multiple valid USIMs, capable of initiating and maintaining simultaneous separate registration states over 3GPP access with PLMN(s) using identities and credentials associated with those USIMs and supporting one or more of the N1 NAS signalling connection release, the paging indication for voice services, the reject paging request, and the paging restriction.
N1 mode:
A mode of a UE allowing access to the 5G core network via the 5G access network.
Native 5G-GUTI:
A 5G-GUTI previously allocated by an AMF.
Non 5G capable over WLAN (N5CW) device:
A device that is not capable to operate as a UE supporting NAS signalling with the 5GCN over a WLAN access network. However, this device may be capable to operate as a UE supporting NAS signalling with 5GCN using the N1 reference point as specified in this specification over 3GPP access. An N5CW device may be allowed to access the 5GCN via trusted WLAN access network (TWAN) that supports a trusted WLAN interworking function (TWIF) as specified in TS 24.502.
Non-CAG Cell:
An NR cell which does not broadcast any Closed Access Group identity or an E-UTRA cell connected to 5GCN.
Non-globally-unique SNPN identity:
An SNPN identity with an NID whose assignment mode is set to 1 (see TS 23.003).
In NB-N1 mode:
Indicates this paragraph applies only to a system which operates in NB-N1 mode. For a multi-access system this case applies if the current serving radio access network provides access to network services via E-UTRA connected to 5GCN by NB-IoT (see TS 36.300, TS 36.331, TS 36.306).
In WB-N1 mode:
Indicates this paragraph applies only to a system which operates in WB-N1 mode. For a multi-access system this case applies if the system operates in N1 mode with E-UTRA connected to 5GCN, but not in NB-N1 mode.
In WB-N1/CE mode:
Indicates this paragraph applies only when a UE, which is a CE mode B capable UE (see TS 36.306), is operating in CE mode A or B in WB-N1 mode.
Initial small data rate control parameters:
Parameters that, if received by the UE during the establishment of a PDU session, are used as initial parameters to limit the allowed data for the PDU session according to small data rate control after establishment of a PDU session as described in subclause 6.2.13. At expiry of the associated validity period, the initial small data rate control parameters are no longer valid and the small data rate control parameters apply.
Initial small data rate control parameters for exception data:
Parameters corresponding to initial small data rate control parameters for small data rate control of exception data.
N1 NAS signalling connection:
A peer to peer N1 mode connection between UE and AMF. An N1 NAS signalling connection is either the concatenation of an RRC connection via the Uu reference point and an NG connection via the N2 reference point for 3GPP access, or the concatenation of an IPsec tunnel via the NWu reference point and an NG connection via the N2 reference point for non-3GPP access.
N5CW device supporting 3GPP access:
An N5CW device which supports acting as a UE in 3GPP access (i.e. which supports NAS over 3GPP access).
N6 PDU session:
A PDU session established between the UE and the User Plane Function (UPF) for transmitting the UE's IP data, Ethernet data or Unstructured data related to a specific application.
NEF PDU session:
A PDU session established between the UE and the Network Exposure Function (NEF) for transmitting the UE's Unstructured data related to a specific application.
Network slicing information:
information stored at the UE consisting of one or more of the following:
  1. default configured NSSAI for PLMN or SNPN;
  2. configured NSSAI for a PLMN or an SNPN;
  3. mapped S-NSSAI(s) for the configured NSSAI for a PLMN;
  4. pending NSSAI for a PLMN or an SNPN;
  5. mapped S-NSSAI(s) for the pending NSSAI for a PLMN;
  6. rejected NSSAI for the current PLMN or SNPN;
  7. mapped S-NSSAI(s) for the rejected NSSAI for the current PLMN;
  8. rejected NSSAI for the failed or revoked NSSAA;
    and
  9. for each access type:
    1. allowed NSSAI for a PLMN or an SNPN;
    2. mapped S-NSSAI(s) for the allowed NSSAI for a PLMN;
    3. rejected NSSAI for the current registration area;
    4. mapped S-NSSAI(s) for the rejected NSSAI for the current registration area;
    5. rejected NSSAI for the maximum number of UEs reached; and
    6. mapped S-NSSAI(s) for the rejected NSSAI for the maximum number of UEs reached.
Non-cleartext IEs:
Information elements that are not cleartext IEs.
Non-emergency PDU session:
Any PDU session which is not an emergency PDU session.
Onboarding SUCI:
SUCI derived from onboarding SUPI.
Onboarding SUPI:
SUPI derived by a UE in SNPN access mode, from default UE credentials and used to identify the UE during initial registration for onboarding services in SNPN and while registered for onboarding services in SNPN.
PDU address:
An IP address assigned to the UE by the packet data network.
PDU session for LADN:
A PDU session with a DNN associated with a LADN.
PDU session with suspended user-plane resources:
A PDU session for which user-plane resources were established or re-established, and for which data radio bearers were suspended when transition to 5GMM-CONNECTED mode with RRC inactive indication.
Persistent PDU session:
either a non-emergency PDU session contains a GBR QoS flow with QoS equivalent to QoS of teleservice 11 and where there is a radio bearer associated with that PDU session over 3GPP access, or an emergency PDU session where there is a radio bearer associated with that PDU session over 3GPP access.
Procedure transaction identity:
An identity which is dynamically allocated by the UE for the UE-requested 5GSM procedures or allocated by the UE or the PCF for the UE policy delivery procedures. The procedure transaction identity is released when the procedure is completed but it should not be released immediately.
RAT frequency selection priority index:
A parameter provided by the AMF to the NG-RAN via the N2 reference point. The AMF selects an RFSP index for a particular UE based on the subscribed RFSP index, the locally configured operator's policies, the allowed NSSAI and the UE context information, including the UE's usage setting, if received during the registration procedure. Definition derived from TS 23.501.
Registered for disaster roaming services:
A UE is considered as "registered for disaster roaming services" when it has successfully completed initial registration or mobility registration for disaster roaming services.
Registered for emergency services:
A UE is considered as "registered for emergency services" when it has successfully completed initial registration for emergency services.
Registered for onboarding services in SNPN:
A UE is considered as "registered for onboarding services in SNPN" when it has successfully completed initial registration for onboarding services in SNPN. While registered for onboarding services in SNPN, services other than the onboarding services are not available.
Registered PLMN:
The PLMN on which the UE performed the last successful registration. The identity of the registered PLMN (MCC and MNC) is provided to the UE within the GUAMI field of the 5G-GUTI.
Rejected NSSAI:
Rejected NSSAI for the current PLMN or SNPN, rejected NSSAI for the current registration area, rejected NSSAI for the failed or revoked NSSAA or rejected NSSAI for the maximum number of UEs reached.
Rejected NSSAI for the current PLMN or SNPN:
A set of S-NSSAI(s) which was included in the requested NSSAI by the UE and is sent by the AMF with the rejection cause "S-NSSAI not available in the current PLMN or SNPN".
Rejected NSSAI for the current registration area:
A set of S-NSSAI(s) which was included in the requested NSSAI by the UE and is sent by the AMF with the rejection cause "S-NSSAI not available in the current registration area".
Rejected NSSAI for the failed or revoked NSSAA:
A set of S-NSSAI(s) which is sent by the AMF with the rejection cause "S-NSSAI not available due to the failed or revoked network slice-specific authentication and authorization".
Rejected NSSAI for the maximum number of UEs reached:
A set of S-NSSAI(s) which was included in the requested NSSAI by the UE and is sent by the AMF with the rejection cause "S-NSSAI not available due to maximum number of UEs reached".
Local release:
Release of a PDU session without peer-to-peer signalling between the network and the UE.
SNPN access operation mode:
SNPN access mode or access to SNPN over non-3GPP access.
Removal of eCall only mode restriction:
All the limitations as described in TS 22.101 for the eCall only mode do not apply any more.
S-NSSAI based congestion control:
Type of congestion control at session management level that is applied to reject session management requests from UEs or release PDU sessions when the associated S-NSSAI and optionally the associated DNN are congested. S-NSSAI based congestion control can be activated at the SMF over session management level and also activated at the AMF over mobility management level.
Selected core network type information:
A type of core network (EPC or 5GCN) selected by the UE NAS layer in case of an E-UTRA cell connected to both EPC and 5GCN.
UE supporting UAS services:
A UE which supports an aerial vehicle, such as a drone, with an onboard or built-in USIM and is able to perform UE NAS functionalities specified in this specification. Upper layers of the UE supporting UAS services are responsible for UAS related procedures such as UUAA, C2 authorization, flight authorization, for which the NAS layer of the UE supporting UAS services performs the necessary NAS procedures.
UE configured for high priority access in selected PLMN:
A UE configured with one or more access identities equal to 1, 2, or 11-15 applicable in the selected PLMN as specified in subclause 4.5.2. Definition derived from TS 22.261.
UE operating in single-registration mode in a network supporting N26 interface:
A UE, supporting both N1 mode and S1 mode. During the last attach, tracking area update (see TS 24.301) or registration procedures, the UE has received either a 5GS network feature support IE with IWK N26 bit set to "interworking without N26 interface not supported" or an EPS network feature support IE with IWK N26 bit set to "interworking without N26 interface not supported".
UE using 5GS services with control plane CIoT 5GS optimization:
A UE that is registered for 5GS services with the control plane CIOT 5GS optimization accepted by the network.
User-plane resources:
Resources established between the UE and the UPF. The user-plane resources consist of one of the following:
  • user plane radio bearers via the Uu reference point, a tunnel via the N3 reference point and a tunnel via the N9 reference point (if any) for 3GPP access;
  • IPsec tunnels via the NWu reference point, a tunnel via the N3 reference point and a tunnel via the N9 reference point (if any) for untrusted non-3GPP access;
  • IPsec tunnels via the NWt reference point, a tunnel via the N3 reference point and a tunnel via the N9 reference point (if any) for trusted non-3GPP access used by the UE;
  • a layer-2 connection via the Yt reference point, a layer-2 or layer-3 connection via the Yw reference point, a tunnel via the N3 reference point and a tunnel via the N9 reference point (if any) for trusted non-3GPP access used by the N5CW device;
  • W-UP resources via Y4 reference point, a tunnel via the N3 reference point and a tunnel via the N9 reference point (if any) for wireline access used by the 5G-RG; and
  • L-W-UP resources via Y5 reference point, a tunnel via the N3 reference point and a tunnel via the N9 reference point (if any) for wireline access used by the FN-RG.
W-AGF acting on behalf of the N5GC device: A W-AGF that enables an N5GC device behind a 5G-CRG or an FN-CRG to connect to the 5G Core.
For the purposes of the present document, the following terms and definitions given in TS 22.261 apply:
Non-public network
Disaster Roaming
satellite NG-RAN
For the purposes of the present document, the following terms and definitions given in TS 23.003 apply:
5G-GUTI
5G-S-TMSI
5G-TMSI
Global Line Identifier (GLI)
Global Cable Identifier (GCI)
GUAMI
IMEI
IMEISV
IMSI
PEI
SUPI
SUCI
For the purposes of the present document, the following terms and definitions given in TS 23.122 apply:
CAG selection
Country
EHPLMN
HPLMN
Onboarding services in SNPN
Registered SNPN
Selected PLMN
Selected SNPN
Shared network
SNPN identity
Steering of Roaming (SOR)
Steering of roaming connected mode control information (SOR-CMCI)
Steering of Roaming information
Subscribed SNPN
Suitable cell
VPLMN
For the purposes of the present document, the following terms and definitions given in TS 23.167 apply:
eCall over IMS
For the purposes of the present document, the following terms and definitions given in TS 23.216 apply:
SRVCC
For the purposes of the present document, the following terms and definitions given in TS 23.401 apply:
eCall only mode
For the purposes of the present document, the following terms and definitions given in TS 23.501 apply:
5G access network
5G core network
5G QoS flow
5G QoS identifier
5G-RG
5G-BRG
5G-CRG
5G System
Allowed area
Allowed NSSAI
AMF region
AMF set
Closed access group
Configured NSSAI
Credentials Holder (CH)
Default UE credentials
IAB-node
Local area data network
Network identifier (NID)
Network slice
NG-RAN
Non-allowed area
Onboarding Standalone Non-Public Network
PDU session
PDU session type
Pending NSSAI
Requested NSSAI
Routing Indicator
Service data flow
Service Gap Control
Serving PLMN rate control
Small data rate control status
SNPN access mode
SNPN enabled UE
Stand-alone Non-Public Network
Time Sensitive Communication
Time Sensitive Communication and Time Synchronization Function
UE-DS-TT residence time
UE presence in LADN service area
For the purposes of the present document, the following terms and definitions given in TS 23.503 apply:
UE local configuration
For the purposes of the present document, the following terms and definitions given in TS 24.008 apply:
GMM
MM
A/Gb mode
Iu mode
GPRS
Non-GPRS
For the purposes of the present document, the following terms and definitions given in TS 24.301 apply:
CIoT EPS optimization
Control plane CIoT EPS optimization
EENLV
EMM
EMM-DEREGISTERED
EMM-DEREGISTERED-INITIATED
EMM-IDLE mode
EMM-NULL
EMM-REGISTERED
EMM-REGISTERED-INITIATED
EMM-SERVICE-REQUEST-INITIATED
EMM-TRACKING-AREA-UPDATING-INITIATED
EPS
EPS security context
EPS services
Lower layer failure
Megabit
Message header
NAS signalling connection recovery
NB-S1 mode
Non-EPS services
S1 mode
User plane CIoT EPS optimization
WB-S1 mode
For the purposes of the present document, the following terms and definitions given in TS 33.501 apply:
5G security context
5G NAS security context
ABBA
Current 5G NAS security context
Full native 5G NAS security context
K'AME
KAMF
KASME
Mapped 5G NAS security context
Mapped security context
Native 5G NAS security context
NCC
Non-current 5G NAS security context
Partial native 5G NAS security context
RES*
For the purposes of the present document, the following terms and definitions given in TS 38.413 apply:
NG connection
User Location Information
For the purposes of the present document, the following terms and definitions given in TS 24.587 apply:
E-UTRA-PC5
NR-PC5
V2X
For the purposes of the present document, the following terms and its definitions given in TS 23.256 apply:
3GPP UAV ID
CAA (Civil Aviation Administration)-Level UAV Identity
Command and Control (C2) Communication
UAV controller (UAV-C)
UAS Services
UAS Service Supplier (USS)
Uncrewed Aerial System (UAS)
USS communication
UUAA
UUAA-MM
UUAA-SM
For the purposes of the present document, the following terms and definitions given in TS 24.554 [19E] apply:
ProSe
For the purposes of the present document, the following terms and definitions given in TS 23.548 apply:
Edge Application Server
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3.2  AbbreviationsWord‑p. 39

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
4G-GUTI
4G-Globally Unique Temporary Identifier
5GCN
5G Core Network
5G-GUTI
5G-Globally Unique Temporary Identifier
5GMM
5GS Mobility Management
5G-RG
5G Residential Gateway
5G-BRG
5G Broadband Residential Gateway
5G-CRG
5G Cable Residential Gateway
5GS
5G System
5GSM
5GS Session Management
5G-S-TMSI
5G S-Temporary Mobile Subscription Identifier
5G-TMSI
5G Temporary Mobile Subscription Identifier
5QI
5G QoS Identifier
ACS
Auto-Configuration Server
AKA
Authentication and Key Agreement
AKMA
Authentication and Key Management for Applications
A-KID
AKMA Key Identifier
A-TID
AKMA Temporary Identifier
AMBR
Aggregate Maximum Bit Rate
AMF
Access and Mobility Management Function
APN
Access Point Name
ATSSS
Access Traffic Steering, Switching and Splitting
AUSF
Authentication Server Function
CAG
Closed access group
CGI
Cell Global Identity
CHAP
Challenge Handshake Authentication Protocol
DDX
Downlink Data Expected
DL
Downlink
DN
Data Network
DNN
Data Network Name
DNS
Domain Name System
eDRX
Extended DRX cycle
DS-TT
Device-Side TSN Translator
EUI
Extended Unique Identifier
E-UTRAN
Evolved Universal Terrestrial Radio Access Network
EAC
Early Admission Control
EAP-AKA'
Improved Extensible Authentication Protocol method for 3rd generation Authentication and Key Agreement
EAS
Edge Application Server
EASDF
Edge Application Server Discovery Function
ECIES
Elliptic Curve Integrated Encryption Scheme
ECS
Edge Configuration Server
EEC
Edge Enabler Client
EPD
Extended Protocol Discriminator
EMM
EPS Mobility Management
EPC
Evolved Packet Core Network
EPS
Evolved Packet System
EPS-UPIP
User-plane integrity protection in EPS
ESM
EPS Session Management
FN-RG
Fixed Network RG
FN-BRG
Fixed Network Broadband RG
FN-CRG
Fixed Network Cable RG
Gbps
Gigabits per second
GFBR
Guaranteed Flow Bit Rate
GUAMI
Globally Unique AMF Identifier
IAB
Integrated access and backhaul
IMEI
International Mobile station Equipment Identity
IMEISV
International Mobile station Equipment Identity and Software Version number
IMSI
International Mobile Subscriber Identity
IP-CAN
IP-Connectivity Access Network
KSI
Key Set Identifier
LADN
Local Area Data Network
LCS
LoCation Services
LMF
Location Management Function
LPP
LTE Positioning Protocol
MAC
Message Authentication Code
MBS
Multicast/Broadcast Services
MA PDU
Multi-Access PDU
Mbps
Megabits per second
MCS
Mission Critical Service
MFBR
Maximum Flow Bit Rate
MICO
Mobile Initiated Connection Only
MINT
Minimization of Service Interruption
MPS
Multimedia Priority Service
MUSIM
Multi-USIM
N3IWF
Non-3GPP Inter-Working Function
N5CW
Non-5G-Capable over WLAN
N5GC
Non-5G Capable
NAI
Network Access Identifier
NITZ
Network Identity and Time Zone
ngKSI
Key Set Identifier for Next Generation Radio Access Network
NPN
Non-public network
NSAC
Network Slice Admission Control
NSACF
Network Slice Admission Control Function
NSSAA
Network slice-specific authentication and authorization
NSSAAF
Network Slice-Specific and SNPN authentication and authorization Function
NSSAI
Network Slice Selection Assistance Information
NSSRG
Network Slice Simultaneous Registration Group
ON-SNPN
Onboarding Standalone Non-Public Network
OS
Operating System
OS Id
OS Identity
PAP
Password Authentication Protocol
PCO
Protocol Configuration Option
PEI
Permanent Equipment Identifier
PEIPS
Paging Early Indication with Paging Subgrouping
PNI-NPN
Public Network Integrated Non-Public Network
ProSe
Proximity based Services
ProSeP
5G ProSe policy
PTI
Procedure Transaction Identity
PVS
Provisioning Server
QFI
QoS Flow Identifier
QoS
Quality of Service
QRI
QoS Rule Identifier
RACS
Radio Capability Signalling Optimisation
(R)AN
(Radio) Access Network
RFSP
RAT Frequency Selection Priority
RG
Residential Gateway
RPLMN
Registered PLMN
RQA
Reflective QoS Attribute
RQI
Reflective QoS Indication
RSN
Redundancy Sequence Number
RSNPN
Registered SNPN
S-NSSAI
Single NSSAI
SA
Security Association
SDF
Service Data Flow
SMF
Session Management Function
SGC
Service Gap Control
SNN
Serving Network Name
SNPN
Stand-alone Non-Public Network
SOR
Steering of Roaming
SOR-CMCI
Steering of Roaming Connected Mode Control Information
SUCI
Subscription Concealed Identifier
SUPI
Subscription Permanent Identifier
TA
Tracking Area
TAC
Tracking Area Code
TAI
Tracking Area Identity
Tbps
Terabits per second
TMGI
Temporary Mobile Group Identity
TNGF
Trusted Non-3GPP Gateway Function
TSC
Time Sensitive Communication
TSCTSF
Time Sensitive Communication and Time Synchronization Function
TWIF
Trusted WLAN Interworking Function
TSN
Time-Sensitive Networking
UAS
Uncrewed Aerial System
UAV
Uncrewed Aerial Vehicle
UDM
Unified Data Management
UL
Uplink
UPDS
UE policy delivery service
UPF
User Plane Function
UPSC
UE Policy Section Code
UPSI
UE Policy Section Identifier
URN
Uniform Resource Name
URSP
UE Route Selection Policy
USS
UAS Service Supplier
UUAA
USS UAV Authorization/Authentication
V2X
Vehicle-to-Everything
V2XP
V2X policy
W-AGF
Wireline Access Gateway Function
WLAN
Wireless Local Area Network
WUS
Wake-up signal
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