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5G核心网3GPP标准中文版-4.注册管理

都市丛林里的小鸡 2019-05-14 06:21:00

5.3.2        Registration Management

5.3.2  注册管理


5.3.2.1         General

5.3.2.1   概述

A UE/user needs to register with the network to receive services that requires registration. Once registered and if applicable the UE updates its registration with the network (see TS 23.502 [3]):

UE或用户为了接收需要注册的服务需要向网络进行注册。一旦注册,在适当的情况下,UE会向网络更新它的注册信息:

-periodically, in order to remain reachable (Periodic Registration Update); or

为了保持UE可达性,进行周期性更新(周期性注册更新)

-upon mobility (Mobility Registration Update); or

当UE移动时(移动性注册更新)

-to update its capabilities or re-negotiate protocol parameters.

更新UE能力或者和网络重协商协议参数。

The Initial Registration procedure involves execution of Network Access Control functions as defined in clause 5.2 (i.e. user authentication and access authorization based on subscription profiles in UDM). As result of the Registration procedure, the identifier of the serving AMF serving the UE in the access through which the UE has registered will be registered in UDM.

初始注册流程包含章节5.2中定义的网络接入控制功能的执行(比如:基于UDM里的签约文件的用户鉴权和接入授权)。作为注册流程的结果,服务AMF的标识将会在UDM里被记录,该AMF是UE在接入时的服务AMF,UE通过这个接入进行注册。

The registration management procedures are applicable over both 3GPP access and Non-3GPP access. The 3GPP and Non-3GPP RM states are independent of each other, see clause 5.3.2.4.

注册管理流程对于3GPP接入和非3GPP接入都适用。3GPP和非3GPP注册管理状态是相互独立的。


5.3.2.2          5GS Registration Management states

5.3.2.2   5GS注册管理状态


5.3.2.2.1   General

5.3.2.2.1   概述

Two RM states are used in the UE and the AMF that reflect the registration status of the UE in the selected PLMN:

在UE和AMF之间使用2个RM状态,RM状态反应了UE在选择的PLMN里的注册状态:

-RM-DEREGISTERED.

非注册态

-RM-REGISTERED.

注册态


5.3.2.2.1   RM-DEREGISTERED state

5.3.2.2.1   非注册态   

In the RM-DEREGISTERED state, the UE is not registered with the network. The UE context in AMF holds no valid location or routing information for the UE so the UE is not reachable by the AMF. However, some parts of UE context may still be stored in the UE and the AMF e.g. to avoid running an authentication procedure during every Registration procedure.

在RM-DEREGISTERED状态时,UE没有在网络中进行注册。AMF保存的UE上下文里没有UE的有效位置信息或者路由信息,所以对于AMF来说UE是不可及的。但是一些UE上下文可能继续在UE和AMF里存储,比如为了避免在每次注册流程中执行鉴权流程的相关信息。

In the RM-DEREGISTERED state, the UE shall:

当处于RM-DEREGISTERED状态时,UE应该:

-attempt to register with the selected PLMN using the Initial Registration procedure if it needs to receive service that requires registration (see TS 23.502 [3] clause 4.2.2.2).

如果UE需要接收需要注册的服务,那么UE应该尝用初始注册流程在选择的PLMN里进行注册。

-remain in RM-DEREGISTERED state if receiving a Registration Reject upon Initial Registration (see TS 23.502 [3] clause 4.2.2.2).

在初始注册时,如果UE收到了“注册拒绝”消息,那么UE应该继续保持RM-DEREGISTERED状态。

-enter RM-REGISTERED state upon receiving a Registration Accept (see TS 23.502 [3] clause 4.2.2.2).

在UE收到了“注册接受”消息时,那么UE应该进入RM-REGISTERED状态。

When the UE RM state in the AMF is RM-DEREGISTERED, the AMF shall:

当在AMF中的UE RM状态处于RM-DEREGISTERED状态时,AMF应该:

-when applicable, accept the Initial Registration of a UE by sending a Registration Accept to this UE and enter RM-REGISTERED state for the UE (see TS 23.502 [3] clause 4.2.2.2); or

在适当情况下,AMF通过向UE发送一个“注册接受”消息来接受UE的初始注册,同时AMF进入这个UE的RM-REGISTERED状态。

-when applicable, reject the Initial Registration of a UE by sending a Registration Reject to this UE (see TS 23.502 [3] clause 4.2.2.2).

在适当情况下,通过向UE发送一个“注册拒绝”消息来拒绝UE的初始注册。


5.3.2.2.3               RM-REGISTERED state

5.3.2.2.3    注册态

In the RM-REGISTERED state, the UE is registered with the network. In the RM-REGISTERED state, the UE can receive services that require registration with the network.

当处于RM-REGISTERED状态时,UE已经在网络里进行了注册。在RM-REGISTERED状态下,UE能够接收在网络里已经注册了的服务。

In the RM-REGISTERED state, the UE shall:

在RM-REGISTERED状态时,UE应该:

-perform Mobility Registration Update procedure if the current TAI of the serving cell (see TS 37.340 [31]) is not in the list of TAIs that the UE has received from the network in order to maintain the registration and enable the AMF to page the UE;

为了保持注册状态和使AMF能够寻呼到UE,当UE当前所在的服务小区的TAI不在UE已经从网络接收的TAI列表里的时候,UE应该执行移动注册更新流程。

-perform Periodic Registration Update procedure triggered by expiration of the periodic update timer to notify the network that the UE is still active.

通过周期性更新定时器的超时触发来执行周期性的注册流程,以通知网络该UE仍然处于激活态。

-perform a Registration Update procedure to update its capability information or to re-negotiate protocol parameters with the network;

UE应该执行一次注册更新流程来更新它的能力信息或与网络侧重新协商协议参数。

-perform Deregistration procedure (see TS 23.502 [3] clause 4.2.2.3.1), and enter RM-DEREGISTERED state, when the UE needs to be no longer registered with the PLMN. The UE may decide to deregister from the network at any time.

当UE再也不需要在该PLMN里注册时,UE应该执行注销流程并且进入RM-DEREGISTERED状态。UE能够在任何时刻决定从网络中进行注销。

-enter RM-DEREGISTERED state when receiving a Registration Reject message or a Deregistration message. The actions of the UE depend upon the 'cause value' in the Registration Reject or Deregistration message. See TS 23.502 [3] clause 4.2.2.

当UE收到一个注册拒绝消息时UE应该进入RM-DEREGISTERED状态。UE的行为依赖于注册拒绝消息或注销消息里的cause value。

When the UE RM state in the AMF is RM-REGISTERED, the AMF shall:

当在AMF中的UE RM状态处于RM-REGISTERED状态时,AMF应该:

-perform Deregistration procedure (see TS 23.502 [3] clauses 4.2.2.3.2, 4.2.2.3.3), and enter RM-DEREGISTERED state for the UE, when the UE needs to be no longer registered with the PLMN. The network may decide to deregister the UE at any time;

当UE不再需要在该PLMN里进行注册时,AMF执行注销流程,同时AMF进入了对于这个UE的RM-DEREGISTERED状态。网络可能在任何时刻决定注销该UE;

-perform Implicit Deregistration at any time after the Implicit Deregistration timer expires. The AMF shall enter RM-DEREGISTERED state for the UE after Implicit Deregistration;

当隐式注销定时器超时后,AMF可以在任何时刻执行隐式注销流程。在隐式注销流程之后,该AMF进入了对于这个UE的RM-DEREGISTERED状态;

-when applicable, accept or reject Registration Requests or Service Requests from the UE.

在适当的情况下,AMF接受或者拒绝来自UE的注册请求或业务请求。


5.3.2.2.4             5GS Registration Management State models

5.3.2.2.4    5GS注册管理状态模型



Figure 5.3.2.2.4-1: RM state model in UE

UE中的注册状态模型



Figure 5.3.2.2.4-2: RM state model in AMF

AMF中的注册状态模型


5.3.2.3        Registration Area management

5.3.2.3   注册区管理

Registration Area management comprises the functions to allocate and reallocate a Registration area to a UE. Registration area is managed per access type i.e., 3GPP access or Non-3GPP access.

注册区管理包含给UE分配和重分配一个注册区的功能。注册区基于每种接入类型进行管理,比如3GPP接入或非3GPP接入。

When a UE registers with the network over the 3GPP access, the AMF allocates a set of tracking areas in TAI List to the UE. When the AMF allocates registration area, i.e. the set of tracking areas in TAI List, to the UE it may take into account various information (e.g. Mobility Pattern and Allowed/Non-Allowed Area (refer to clause 5.3.4.1)). An AMF which has the whole PLMN as serving area may alternatively allocate the whole PLMN ("all PLMN") as registration area to a UE in MICO mode (refer to clause 5.4.1.3).

当UE通过3GPP接入在网络中进行注册时,AMF分配在TAI 列表里的一组跟踪区给UE。当AMF分配注册区给UE时,比如在TAI 列表里的一组跟踪区,AMF可能去顾及不同的信息(比如移动模式和允许/不允许的区域)。把整个PLMN作为服务区的单个AMF可以选性地向MICO模式下的UE分配整个PLMN(all PLMN)作为注册区。   

The 5G System shall support allocating a Registration Area using a single TAI List which includes tracking areas of any NG-RAN nodes in the Registration Area for a UE.

5G系统应该支持用一个单一的TAI列表来分配一个注册区,该TAI列表包括了这个UE注册区中所有的NG-RAN站点的TA。

When a UE registers with the network over the Non-3GPP access, the registration area for Non-3GPP access corresponds to a unique reserved TAI value (i.e. dedicated to Non-3GPP access). There is thus a unique Tracking Area for the Non-3GPP access to 5GC, that is called the N3GPP TAI.

当一个UE通过非3GPP接入在网络中进行注册时,这个通过3GPP接入的注册区对应了一个唯一保留的TAI值(比如专门用于非3GPP接入的TAI值)。因此针对非3GPP接入5G核心网有一个唯一的TA,这个唯一的TA被称为N3GPP TAI。

When generating the TAI list, the AMF shall include only TAIs that are applicable on the access where the TAI list is sent.

当生成TAI列表时,AMF应该只包含接入网中适用的TAIs,通过该接入网TAI列表被发送。



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