62-5G系统移动管理基本流程

5G

系统移动管理基本流程

< br>根据初始方式的不同，

5GMM

程序有三种：

1.

5GMM

连接流程

（在

5GMM-CONNECTED

状态下，一些初始的公共流程，比如：网络发起

的初始化、

UE

发起的初始化

NAS

< br>传输等）

2.

5GMM

具体流程

（比如：注册、电话挂机释放）< /p>

3.

5GM M

连接管理流程

（

service r equest

、

paging

、

notification

）

5GMM-NULL

5GMM-

DER EGISTERED-

INITIATED

- Deregistration accepted

- Deregistration requested (not power off)

- enable

N1 mode

- disable

N1 mode

5GMM- DEREGISTERED

- Initial registration rejected or failed

- Non-initial registration rejected

(e.g. #3, #6, #7)

- NW-initiated deregistration

requested

- NW-initiated deregistration

requested

- Local deregistration

5GMM- REGISTERED

- Initial registration

requested

- Deregistration

requested (power off)

- Initial registration accepted

- Non- initial registration accepted

- Non- initial registration rejected

or failed (other causes)

- SR

initiated

- SR accepted

- SR rejected or failed

(e.g. #22, #28)

5GMM- SERVICE-

REQUEST-INITIATED

Any state

5GMM-

REGISTERED-

INITIATED

- Non-initial

registration

requested

5GMM main states in the UE

DEREGISTERED-

INIT IATED

- Deregistration accepted

- UE-initiated deregistration requested

- Non-initial registration rejected (e.g. #3, #6,

#7)

- SR rejected (e.g. #3, #6, #7)

- Implicit deregistration

5GMM- DEREGISTERED

- Initial registration successful

- Common procedure

requested

- Common procedure failed

- Lower layer failure

5GMM-

COMMON- PROCEDURE-

INITIATED

- Common procedure requested

- NW-initiated deregistration requested

5GMM- REGISTERED

- Common procedure successful

- Initial registration successful

5GMM main states in the network

系统内切换流程

< /p>

切换过程是使用

Xn

或

< br>N2

参考点将

UE

从源

NG-RAN

节点移交给目标

NG-RAN

节点。

例如，由于新的无线电条件（覆盖类）

、负载平衡或由于特定服务（例如，在语

音的

QoS

流存在的情况下，

NR

的源

NG-RAN

节点可以触发到连接到

5GC

的

e-UTRA

的切换。

）< /p>

基于

Xn

接口 的切换（类似

LTE

的

X2