21905术语，关键词

voip_mobile

For the purposes of the present document,the terms and definitions given in TR 21.905 andthe following apply. A term defined in the present document takes precedenceover the definition of the same term, if any, in TR 21.905.

5G VN Group:

A set of UEs using private communicationfor 5G LAN-type service.

5G Access Network:

An access network comprising a NG-RANand/or non-3GPP AN connecting to a 5G Core Network.

5G Access Stratum-based TimeDistribution:

A time synchronization distribution methodthat is used by an NG-RAN to provide the 5GS time to the UE(s) over the radiointerface using procedures specified in TS 38.331.

5G Core Network:

The core network specified in the presentdocument. It connects to a 5G Access Network.

5G LAN-Type Service:

A service over the 5G system offeringprivate communication using IP and/or non-IP type communications.

5G LAN-Virtual Network:

A virtual network over the 5G systemcapable of supporting 5G LAN-type service.

5G NSWO:

The 5G NSWO is the capability provided by5G system and by UE to enable the connection to a WLAN access network using 5GScredentials without registration to 5GS.

5G QoS Flow or QoS Flow:

The finest granularity for QoS forwardingtreatment in the 5G System. All traffic mapped to the same 5G QoS Flow receivethe same forwarding treatment (e.g. scheduling policy, queue management policy,rate shaping policy, RLC configuration, etc.). Providing different QoSforwarding treatment requires separate 5G QoS Flow.

5G QoS Identifier:

A scalar that is used as a reference to aspecific QoS forwarding behaviour (e.g. packet loss rate, packet delay budget)to be provided to a 5G QoS Flow. This may be implemented in the access networkby the 5QI referencing node specific parameters that control the QoS forwardingtreatment (e.g. scheduling weights, admission thresholds, queue managementthresholds, link layer protocol configuration, etc.).

5G System:

3GPP system consisting of 5G Access Network(AN), 5G Core Network and UE.

5G-BRG:

The 5G-BRG is a 5G-RG defined in BBF.

5G-CRG:

The 5G-CRG is a 5G-RG specified in DOCSISMULPI [89].

5G-RG:

A 5G-RG is a RG capable of connecting to5GC playing the role of a UE with regard to the 5G core. It supports secureelement and exchanges N1 signalling with 5GC. The 5G-RG can be either a 5G-BRGor 5G-CRG.

Access Traffic Steering:

The procedure that selects an accessnetwork for a new data flow and transfers the traffic of this data flow overthe selected access network. Access traffic steering is applicable between one3GPP access and one non-3GPP access.

Access Traffic Switching:

The procedure that moves all traffic of anongoing data flow from one access network to another access network in a waythat maintains the continuity of the data flow. Access traffic switching isapplicable between one 3GPP access and one non-3GPP access.

Access Traffic Splitting:

The procedure that splits the traffic of adata flow across multiple access networks. When traffic splitting is applied toa data flow, some traffic of the data flow is transferred via one access andsome other traffic of the same data flow is transferred via another access.Access traffic splitting is applicable between one 3GPP access and one non-3GPPaccess.

Allowed NSSAI:

Indicating the S-NSSAIs values the UE coulduse in the Serving PLMN in the current Registration Area.

Allowed Area:

Area where the UE is allowed to initiatecommunication as specified in clause 5.3.2.3.

Alternative S-NSSAI:

Indicating a compatible S-NSSAI for anS-NSSAI in the Allowed NSSAI that the AMF uses to replace an S-NSSAI when theS-NSSAI is not available or congested, as specified in clause 5.15.19.

AMF Region:

An AMF Region consists of one or multipleAMF Sets.

AMF Set:

An AMF Set consists of some AMFs that servea given area and Network Slice(s). AMF Set is unique within an AMF Region andit comprises of AMFs that support the same Network Slice(s). Multiple AMF Setsmay be defined per AMF Region. The AMF instances in the same AMF Set may begeographically distributed but have access to the same context data.

Application Identifier:

An identifier that can be mapped to aspecific application traffic detection rule.

AUSF Group ID:

This refers to one or more AUSF instancesmanaging a specific set of SUPIs. An AUSF Group consists of one or multipleAUSF Sets.

Backhaul PLMN/SNPN (BH PLMN/SNPN):

The PLMN or SNPN serving a MWAB-UE. It canbe a Terrestrial Network or a Non-Terrestrial Network.

Binding Indication:

Information included by a NF serviceproducer to a NF service consumer in request responses or notifications toconvey the scope within which selection/reselection of target NF/NF Servicesmay be performed, or information included by the NF service consumer inrequests or subscriptions to convey the scope within whichselection/reselection of notification targets or the selection of otherservice(s) that the NF consumer produces for the same data context may beperformed. See clause 6.3.1.0.

BSF Group ID:

This refers to one or more BSF instancesmanaging a specific set of SUPIs or GPSIs. A BSF Group consists of one ormultiple BSF Sets.

Configured NSSAI:

NSSAI provisioned in the UE applicable toone or more PLMNs.

CHF Group ID:

This refers to one or more CHF instancesmanaging a specific set of SUPIs.

Credentials Holder:

Entity which authenticates and authorizesaccess to an SNPN separate from the Credentials Holder.

Default UE credentials:

Information configured in the UE to makethe UE uniquely identifiable and verifiably secure to perform UE onboarding.

Data Burst:

A set of multiple PDUs generated and sentby the application in a short period of time.

NOTE 1:

A Data Burst can be composed of one ormultiple PDU Sets.

Default Credentials Server (DCS):

An entity that can perform authenticationbased on the Default UE credentials or provide means for another entity toperform authentication based on the Default UE credentials.

Delegated Discovery:

This refers to delegating the discovery andassociated selection of NF instances or NF service instances to an SCP.

Direct Communication:

This refers to the communication betweenNFs or NF services without using an SCP.

Disaster Condition:

See definition in TS 22.261.

Disaster Inbound Roamer:

See definition in TS 22.261.

Disaster Roaming:

See definition in TS 22.261.

DN Access Identifier (DNAI):

Identifier of a user plane access to one ormore DN(s) where applications are deployed.

Emergency Registered:

A UE is considered Emergency Registeredover an Access Type in a PLMN when registered for emergency services only overthis Access Type in this PLMN.

Endpoint Address:

An address in the format of an IP addressor FQDN, which is used to determine the host/authority part of the target URI.This Target URI is used to access an NF service (i.e. to invoke serviceoperations) of an NF service producer or for notifications to an NF serviceconsumer.

En-gNB:

as defined in TS 37.340.

Expected UE Behaviour:

Set of parameters provisioned by anexternal party to 5G network functions on the foreseen or expected UEbehaviour, see clause 5.20.

Feeder link:

As defined in TS 38.300.

Fixed Network Residential Gateway:

A Fixed Network RG (FN-RG) is a RG that itdoes not support N1 signalling and it is not 5GC capable.

Fixed Network Broadband ResidentialGateway:

A Fixed Network RG (FN-BRG) is a FN-RGspecified in BBFTR-124 [90].

Fixed Network Cable Residential Gateway:

A Fixed Network Cable RG (FN-CRG) is aFN-RG with cable modem specified in DOCSISMULPI [89].

Forbidden Area:

An area where the UE is not allowed toinitiate communication as specified in clause 5.3.2.3.

GBR QoS Flow:

A QoS Flow using the GBR resource type orthe Delay-critical GBR resource type and requiring guaranteed flow bit rate.

Group ID for Network Selection (GIN):

An identifier used during SNPN selection toenhance the likelihood of selecting a preferred SNPN that supports a DefaultCredentials Server or a Credentials Holder.

(g)PTP-based Time Distribution:

a method to distribute timing amongentities in a (g)PTP domain using PTP messages generated by a GM (in the casethe GM is external to 5GS) or by 5GS (in the case the 5GS acts as a GM for agiven (g)PTP domain). Possible dependencies between (g)PTP-based TimeDistribution and 5G Access Stratum-based Time Distribution are describedin clause 5.27.1.The synchronization process is described in clause 5.27.1 andfollows the applicable profiles of IEEEStd 802.1AS [104] or IEEEStd 1588 [126].

Home Network Public Key Identifier:

An identifier used to indicate whichpublic/private key pair is used for SUPI protection and de-concealment of theSUCI as specified in TS 23.003.

IAB-donor:

This is a NG-RAN node that supportsIntegrated access and backhaul (IAB) feature and provides connection to thecore network to IAB-nodes. It supports the CU function of the CU/DUarchitecture for IAB defined in TS 38.401.

IAB-node:

A relay node that supports wireless in-bandand out-of-band relaying of NR access traffic via NR Uu backhaul links. Itsupports the UE function and the DU function of the CU/DU architecture for IABdefined in TS 38.401.

Indirect Communication:

This refers to the communication betweenNFs or NF services via an SCP.

Initial Registration:

UE registration in RM-DEREGISTERED state asspecified in clause 5.3.2.

Intermediate SMF (I-SMF):

An SMF that is inserted to support a PDUsession as the UE is located in an area which cannot be controlled by theoriginal SMF because the UPF(s) belong to a different SMF Service Area.

Local Area Data Network:

a DN that is accessible by the UE only inspecific locations, that provides connectivity to a specific DNN, and whoseavailability is provided to the UE.

Local Break Out (LBO):

Roaming scenario for a PDU Session wherethe PDU Session Anchor and its controlling SMF are located in the serving PLMN(VPLMN).

LTE-M:

a 3GPP RAT type Identifier used in the CoreNetwork only, which is a sub-type of E-UTRA RAT type, and defined to identifyin the Core Network the E-UTRA when used by a UE indicating Category M.

MA PDU Session:

A PDU Session that provides a PDUconnectivity service, which can use one access network at a time, orsimultaneously one 3GPP access network and one non-3GPP access network.

Mobile Base Station Relay:

A mobile base station acts as a relaybetween a UE and the 5G network. Such mobile base station relay can for examplebe mounted on a moving vehicle and serve UEs that can be located inside oroutside the vehicle (or entering/leaving the vehicle). See description of TS 22.261.A mobile Base Station Relay is supported in 5GS with the IAB-architecture withmobility as specified in clause 5.35A andthat described in TS 38.401.

Mobile gNB with Wireless AccessBackhauling (MWAB):

A NG-RAN device comprised of a UE (MWAB-UE)and a gNB (MWAB-gNB). The MWAB provides an NR access link to UEs and connectswirelessly to the 5GC (using NR) of a PLMN or SNPN broadcasted by its cell(s),through an IP connectivity provided by a Backhaul (BH) PDU sessions establishedby the MWAB-UE via the NG-RAN of a Backhaul(BH) PLMN/SNPN. Such device may bemobile, e.g. it may be mounted on a moving vehicle and serve UEs that can belocated inside or outside the vehicle (or entering/leaving the vehicle).

MWAB Broadcasted PLMN/SNPN:

A PLMN or SNPN whose identifier a MWAB-gNBcell(s) is(are) configured to broadcast in the system information. This is aPLMN/SNPN the MWAB-gNB provides access to.

Master RAN node:

A Master node as defined in TS 37.340.

Mobility Pattern:

Network concept of determining within theAMF the UE mobility parameters as specified in clause 5.3.2.4.

Mobility Registration Update:

UE re-registration when entering new TAoutside the TAI List as specified in clause 5.3.2.

MPS-subscribed UE:

A UE having a USIM with MPS subscription.

Multi-USIM UE:

A UE with multiple USIMs, capable ofmaintaining a separate registration state with a PLMN for each USIM at leastover 3GPP Access and supporting one or more of the features described in clause 5.38.

NB-IoT UE Priority:

Numerical value used by the NG-RAN toprioritise between different UEs accessing via NB-IoT.

NGAP UE association:

The logical per UE association between a5G-AN node and an AMF.

NGAP UE-TNLA-binding:

The binding between a NGAP UE associationand a specific TNL association for a given UE.

Network Function:

A 3GPP adopted or 3GPP defined processingfunction in a network, which has defined functional behaviour and 3GPP definedinterfaces.