【5G核心网】 NAS之5GS mobility management

末蓝、 2022-12-05 05:25 426阅读 0赞

5GS mobility management (5GMM) information elements，本文分析 NAS MM 消息的信息元素， 以及 5GS mobility management message 消息

# 1 5GS mobility management (5GMM) information elements #

### **   1.1 5GMM capability** ###

5GMM 能力信息元素的目的是向网络提供有关与 5GCN 有关或与 EPS 互通的 UE 方面的信息。内容可能会影响网络处理UE操作的方式。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70][] 标题

### **   1.2 5GS identity type** ###

5GS 身份类型信息元素的目的是指定请求哪个身份。

![20200827172543952.png][]**Figure 9.11.3.3.1: 5GS identity type information element**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 1][]   **Table 9.11.3.3.1: 5GS identity type information element**

# 2. 5GS mobility management messages #

###    2.1 Authentication ###

**    2.1.1 Authentication request**

由 AMF -> UE 发起鉴权请求 ***AUTHENTICATION REQUEST***

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 2][] Table 8.2.1.1.1: AUTHENTICATION REQUEST message content

如果是 5G AKA 鉴权流程则鉴权参数 RAND IE 包括在 AUTHENTICATION REQUEST 消息中

如果是 5G AKA 鉴权流程则鉴权参数 AUTN IE 包括在 AUTHENTICATION REQUEST 消息中

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 3][] DownlinkNASTransport, Authentication request

2.1.2 Authentication response

2.1.3 Authentication result

2.1.4 Authentication failure

2.1.5 Authentication reject

###    2.2 Registration ###

**    2.2.1 Registration request**

> Message type: REGISTRATION REQUEST
> 
> Significance: dual
> 
> Direction: UE to network

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 4][] Table 8.2.6.1.1: REGISTRATION REQUEST message content

**  2.2.2 Registration accept**

> Message type: REGISTRATION ACCEPT
> 
> Significance: dual
> 
> Direction: network to UE

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 5][] 标

###    2.3 De-registration ###

**     2.3.1 De-registration request (UE originating de-registration)**

Message type: DEREGISTRATION REQUEST

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 6][] Table 8.2.12.1.1: DEREGISTRATION REQUEST message content

###    2.4 Service request ###

**    2.4.1 Service request**

> Message type: SERVICE REQUEST
> 
> Significance: dual
> 
> Direction: UE to network

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 7][] Table 8.2.16.1.1: SERVICE REQUEST message content

**    2.4.2 Service accept**

> Message type: SERVICE ACCEPT
> 
> Significance: dual
> 
> Direction: network to UE

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3pob25nbGluemhhbmc_size_16_color_FFFFFF_t_70 8][] Table 8.2.17.1.1: SERVICE ACCEPT message content

TS 24.501

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