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5G网络AMF支持的UE上下文内容
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发表于 2022-08-07 17:25:04  只看楼主 

         在5G网络中终端与核心网AMF之间的服务使NF能够通过 N1 NAS 消息或与 AN(UE 和非 UE 特定)与 UE 进行通信。下面定义的服务操作允许 NF 与 UE 和 AN 进行通信。以下是此 NF 服务的关键功能。

  • - 提供向 UE 传输 N1 消息的服务操作;

  • - 允许 NF 订阅和取消订阅来自 UE 的特定 N1 消息的通知;

  • - 允许 NF 订阅和取消订阅来自 AN 的特定信息的通知;

  • - 为向 AN 发起 N2 消息提供服务操作;

  • - 安全上下文管理;和

  • - UE 信息管理和传输(包括其安全上下文)。

 Namf_Communication_UEContextTransfer 服务操作具体包括:

  • 服务操作名称:Namf_Communication_UEContextTransfer

  • 描述:向消费者 NF 提供 UE 上下文。

  • 输入,必填:5G-GUTI 或 SUPI、访问类型、原因。

  • 输入,可选:来自触发上下文传输的 UE 的完整性保护消息。

  • 输出,必需:已识别 UE 的 UE 上下文或仅 SUPI 以及注册请求已被验证的指示。 UE上下文详见表5.2.2.2.2-1。

  • 输出,可选:移动设备标识符(如果可用)、允许的 NSSAI、允许的 NSSAI 的映射。

  • 有关此服务操作的使用示例,请参见第 4.2.2.2.2 节。如果消费者 NF 从 UE 发送了一个完整性保护消息,AMF 使用它来验证该请求是否被允许检索 UE 的 UE 上下文。如果允许,AMF 在 Namf_Communication_UEContextTransfer 响应中向消费者 NF 提供 UE 上下文。

    下表说明了 UE 上下文:


               Field

                                     Description

SUPI

SUPI (Subscription Permanent Identifier) is the   subscriber's permanent identity in 5GS.

Routing Indicator

UE's Routing Indicator that allows together with SUCI/SUPI Home   Network Identifier to route network signalling to AUSF and UDM instances   capable to serve the subscriber.

Home Network Public Key identifier

UE's Network Public Key identifier that may be   used together with SUCI/SUPI Home Network Identifier and Routing Indicator to   route network signalling to AUSF and UDM instances capable to serve the   subscriber.

AUSF Group ID

The AUSF Group ID for the given UE.

UDM Group ID

The UDM Group ID for the UE.

PCF Group ID

The PCF Group ID for the UE.

SUPI-unauthenticated-indicator

This indicates whether the SUPI is   unauthenticated.

GPSI

The GPSI(s) of the UE. The presence is dictated   by its storage in the UDM.

5G-GUTI

5G Globally   Unique Temporary Identifier.

PEI

Mobile Equipment Identity.

Internal Group ID-list

List of the subscribed internal group(s) that   the UE belongs to.

UE Specific DRX Parameters

UE specific DRX parameters for E-UTRA and NR.

UE Specific DRX Parameters for NB-IoT

UE Specific   DRX Parameters for NB-IoT.

UE MM   Network Capability

Indicates the UE MM network capabilities.

5GMM Capability

Includes other UE capabilities related to 5GCN   or interworking with EPS.

Events   Subscription

List of the event subscriptions by other CP   NFs. Indicating the events being subscribed as well as any information on how   to send the corresponding notifications.

LTE-M   Indication

Indicates if the UE is a Category M UE. This is   based on indication provided by the NG-RAN or by the MME at EPS to 5GS   handover.

NR RedCap   Indication

Indicates if the UE is a NR RedCap UE. This is   based on indication provided by the NG-RAN as specified in TS 23.501 [2].

MO Exception   Data Counter

MO Exception Data Counter used for Small Data   Rate Control purposes, see clause 5.31.14.3 of TS 23.501 [2].

AMF-Associated   Expected UE Behaviour parameters

Indicates per UE the Expected UE Behaviour Parameters   and their corresponding validity times as specified in clause 4.15.6.3.

Disaster   Roaming

Indicates the UE is registered for Disaster   Roaming service.

SNPN   Onboarding indication

Indicates that the UE is registered for   onboarding in an SNPN.

For the   AM Policy Association:

AM Policy Information

Information on AM policy provided by PCF. It includes   the Policy Control Request Triggers and the Policy Control Request   Information. It includes the authorized RFSP, the authorized Service Area Restrictions,   access stratum time distribution indication and the Uu interface time   synchronization error budget. It includes an indication per DNN, S-NSSAI for   notification of the establishment and termination of the SM Policy   Association and the PCF binding information.

PCF ID

The identifier of the PCF for AM Policy. In   roaming, the identifier of V-PCF (NOTE 2).

For the   UE Policy Association:

Trigger   Information

The Policy Control Request Triggers on UE   policy provided by PCF.

PCF ID(s)

The identifier of the PCF for UE Policy. In   roaming, the identifiers of both V-PCF and H-PCF (NOTE 1) (NOTE 2).

For the   UE NWDAF association:

NWDAF ID(s)

Indicating the NWDAF ID(s) (instance ID(s) or   Set ID(s)) used for the UE specific Analytics.

Subscription   Correlation ID(s)

Active UE-related analytics subscription(s) for   each given NWDAF ID.

Analytics   ID(s)

Analytics ID(s) per NWDAF ID.

Analytics   specific data

Additional information on the Analytics ID(s)   the AMF is subscribed related to the UE specific Analytics, i.e. per   Analytics ID it contains the following parameters: Analytics Filter   Information, Target of Analytics reporting, Analytics Reporting Info.

Other   information

Subscribed RFSP Index

An index to specific RRM configuration in the   NG-RAN that is received from the UDM.

RFSP Index in Use

An index to specific RRM configuration in the   NG-RAN that is currently in use.

UE-AMBR in serving network

The UE-AMBR that has been sent to RAN (e.g.   based on subscribed UE-AMBR from UDM or UE-AMBR received from PCF)

List of UE-Slice-MBR(s)

The list of UE-Slice-MBR if applicable. There   is a single uplink and a single downlink value per S-NSSAI.

MICO Mode Indication

Indicates the MICO Mode for the UE.

Extended idle mode DRX Parameters

Negotiated extended idle mode DRX parameters.

Active Time Value for MICO mode

UE specific Active Time value allocated by AMF   for MICO mode handling.

Strictly Periodic Registration Timer Indication

An indication that UE shall perform the Periodic   Registration Update in a strictly periodic time, see clause 5.31.7.5 of TS 23.501 [2].

Voice Support Match Indicator

An indication whether the UE radio capabilities   are compatible with the network configuration. The AMF uses it as an input   for setting the IMS voice over PS Session Supported Indication over 3GPP   access.

Homogenous Support of IMS Voice over PS   Sessions

Indicates per UE if "IMS Voice over PS   Sessions" is homogeneously supported in all TAs in the serving AMF or   homogeneously not supported, or, support is non-homogeneous/unknown, see   clause 5.16.3.3 of TS 23.501 [2].

UE Radio Capability for Paging Information

Information used by the NG-RAN to enhance the   paging towards the UE (see clause 5.4.4.1 of TS 23.501 [2]).

Information On Recommended Cells And RAN nodes   For Paging

Information sent by the NG-RAN, and used by the   AMF when paging the UE to help determining the NG-RAN nodes to be paged as   well as to provide the information on recommended cells to each of these   NG-RAN nodes, in order to optimize the probability of successful paging while   minimizing the signalling load on the radio path.

UE Radio Capability Information

Information sent by the NG-RAN node and stored   in the AMF. The AMF sends this information to the NG-RAN node within the UE   context during transition to CM-CONNECTED state, except for NB-IoT when   NB-IoT specific UE Radio Access Capability are sent instead.

UE Radio Capability ID

Pointer that uniquely identifies a set of UE   Radio Capabilities in UCMF as defined in TS 23.501 [2].

NB-IoT specific UE Radio Access Capability   Information

NB-IoT specific UE radio access capabilities.

WUS Assistance Information

Assistance information for determining the WUS   group (see TS 23.501 [2]).

Paging Subgrouping Support Indication

UE indication of its capability to support NR   paging subgrouping.

AMF PEIPS Assistance Information

AMF assigned NR paging subgroup information for   use in NR paging subgrouping (see TS 23.501 [2]).

SMSF Identifier

The Identifier of the SMSF serving the UE in RM‑REGISTERED state.

SMSF Address

The Address of the SMSF serving the UE in   RM-REGISTERED state. (see clause 4.13.3.1).

SMS Subscription

Indicates subscription to any SMS delivery   service over NAS irrespective of access type.

SEAF data

Master   security information received from AUSF.

Last used EPS PLMN ID

The   identifier of the last used EPS PLMN.

Paging Assistance Data for CE capable UE

Paging   Assistance Data for Enhanced Coverage level and cell ID provided by the last   NG-RAN the UE was connected to.

Enhanced Coverage Restricted Information

Specifies   per PLMN whether CE mode B is restricted for the UE, or both CE mode A and CE   mode B are restricted for the UE, or both CE mode A and CE mode B are not   restricted for the UE.

NB-IoT Enhanced Coverage Restricted Information

Specifies   per PLMN whether the Enhanced Coverage is restricted or not for the UE.

Service Gap Time

Used to set   the Service Gap timer for Service Gap Control (see clause 5.31.16 of TS 23.501 [2]).

Running Service Gap expiry time

The time of   expiry of a currently running Service Gap Timer (see clause 5.31.16 of TS 23.501 [2]).

NB-IoT UE Priority

Numerical   value used by the NG-RAN to prioritise between UEs accessing via NB-IoT.

List of Small Data Rate Control Statuses

List of   Small Data Rate Control Statuses by DNN and S-NSSAI for the released PDU   Sessions, see clause 5.31.14.3 of TS 23.501 [2].

List of APN Rate Control Statuses

Indicates   for each APN, the APN Rate Control Status (see clause 4.7.7.3 of TS 23.401 [13])   received from an MME when mobility from EPC to 5GC occurs. This information   is provided to the MME during 5GC to EPC mobility.

UE positioning capability

Information   sent by the LMF and stored in the AMF. The AMF sends this information along   with the location request to the LMF.

For each   access type level context within the UE access and mobility context:

Access Type

Indicates the access type for this context.

RM State

Registration management state.

UUAA-MM Status

Indicates the status of UUAA-MM if the AMF is   configured to perform the UAV authentication/authorization at 5GS   registration as described in clause 5.2.2 of TS 23.256 [80].   Possible states are "PENDING", "SUCCESS",   "FAILED".

For status "PENDING" and   "FAILED" the AMF rejects any PDU session establishment request from   the UE for DNN and S-NSSAI that are used for UAS services.

Registration Area

Current Registration Area (a set of tracking areas   in TAI List).

TAI of last Registration

TAI of the TA in which the last Registration   Request was initiated.

User Location   Information

Information on user location.

Mobility Restrictions

Mobility Restrictions restrict mobility   handling or service access of a UE. It consists of RAT restriction, Forbidden   area, Service area restrictions and Core Network type restriction. It may   also contain an Allowed CAG list and, optionally an indication whether the UE   is only allowed to access 5GS via CAG cells.

Security Information for CP

As defined in TS 33.501 [15].

Security Information for UP

As defined in TS 33.501 [15].

Allowed NSSAI

Allowed NSSAI consisting of one or more   S-NSSAIs for serving PLMN in the present Registration Area.

Mapping Of Allowed NSSAI

Mapping Of Allowed NSSAI is the mapping of each   S-NSSAI of the Allowed NSSAI to the S-NSSAIs of the Subscribed S-NSSAIs.

S-NSSAIs subject to Network Slice-Specific   Authentication and Authorization

Subscribed S-NSSAIs which are subject to NSSAA   procedure.

Also including the status, i.e. result, of the   NSSAA if already executed or whether the S-NSSAI is pending the completion of   an NSSAA procedure.

Inclusion of NSSAI in RRC Connection   Establishment Allowed by HPLMN

[Only for 3GPP access] it defines whether the   UDM has indicated that the UE is allowed to include NSSAI in the RRC   connection Establishment in clear text.

Access Stratum Connection Establishment NSSAI   Inclusion Mode

Defines what NSSAI, if any, to include in the   Access Stratum connection establishment as specified in clause 5.15.9 of   TS 23.501 [2].

CM state for UE connected via N3IWF/TNGF

Identifies the UE CM state (CM-IDLE,   CM-CONNECTED) for UE connected via N3IWF/TNGF

N2 address information for N3IWF/TNGF

Identifies the N3IWF/TNGF to which UE is   connected. Exists only if CM state for UE connected via N3IWF/TNGF is   CM-CONNECTED.

AMF UE NGAP ID

Identifies the UE association over the NG   interface within the AMF as defined in TS 38.413 [10]. This   parameter exists only if CM state for the respective Access Type is   CM-CONNECTED.

RAN UE NGAP ID

Identifies the UE association over the NG   interface within the NG-RAN node as defined in TS 38.413 [10]. This   parameter exists only if CM state for the respective Access Type is   CM-CONNECTED.

Network Slice Instance(s)

The Network Slice Instances selected by 5GC for this UE.

URRP-AMF   information

UE Reachability Request Parameter contains a   list of URRP-AMF flags and associated authorised NF IDs. Each URRP-AMF flag   indicates whether direct UE reachability notification has been authorised by   the HPLMN towards the associated NF ID or not.

SoR Update Indicator for Initial Registration

An indication whether the UDM requests the AMF to retrieve SoR   information when the UE performs NAS Registration Type "Initial   Registration".

SoR Update   Indicator for Emergency Registration

An   indication whether the UDM requests the AMF to retrieve SoR information when   the UE performs NAS Registration Type "Emergency Registration".

Charging   Characteristics

The Charging   Characteristics as defined in Annex A of TS 32.256 [71].

For each   PDU Session level context:

S-NSSAI(s)

The S-NSSAI(s) associated to the PDU Session.

DNN

The associated DNN for the PDU Session.

Network Slice Instance id

The network Slice Instance information for the PDU Session

PDU Session ID

The identifier of the PDU Session.

SMF Information

The associated SMF identifier and SMF address   for the PDU Session.

When an I-SMF is used, this additionally   include the information correspond to an I-SMF.

Access Type

The current access type for this PDU   Session (for a MA PDU Session this may correspond to information indicating 2   Access Type).

EBI-ARP list

The allocated EBI and associated ARP pairs for this PDU session.

5GSM Core Network Capability

The UEs 5GSM Core Network Capability as defined in clause 5.4.4b of   TS 23.501 [2].

SMF derived CN assisted RAN parameters tuning

These are PDU Session specific parameters received from the SMF and   used by the AMF to derive the Core Network assisted RAN parameters tuning.

                                                     Table 5.2.2.2.2-1: UE Context in AMF



资料来源:TS 23.502 5.2

整理:kangguoying20220807


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