AF会话建立流程

1 When the AF receives an internal or external trigger to set-up a new AF session, the AF invokes the

Npcf_PolicyAuthorization_Create service operation to the PCF by sending the HTTP POST request to

the "Application Sessions" resource.

当AF接收到内部或外部触发器以设置新的AF会话时，AF通过向“应用程序会话”资源发送HTTP POST请

求，调用PCF的Npcf_PolicyAuthorization_Create服务操作。

The request operation includes the IP address or the MAC address of the UE, the SUPI if available, the

GPSI if available, the DNN if available, the S-NSSAI if available, service information, sponsored data

connectivity if applicable, AF application identifier, Priority indicator, etc, as defined in clause 4.2.2.2 of

3GPP TS 29.514.

请求操作包括UE的IP地址或MAC地址、可用的SUPI、可用的GPSI、可用的DNN、可用的S-NSSAI、服

务信息、适用的赞助数据连接、AF应用程序标识符、优先级指示符等，如3GPP TS 29.514第4.2.2.2节所

The request operation may also include the subscription to notifications on certain user plane events,

e.g. subscription to QoS notification control.

请求操作还可能包括对某些用户平面事件的通知订阅，例如，订阅QoS通知控制。

To invoke MPS for DTS, the AF includes the MPS Action indication as defined in 3GPP TS 29.514.

为了调用DTS的MPS，AF包括了在3GPP TS 29.514中定义的MPS动作指示。

If the "TimeSensitiveNetworking" or "TimeSensitiveCommunication" feature is supported the TSN AF or

TSCTSF may subscribe to notification of DS-TT PMIC and/or NW-TT PMIC(s) and/or UMIC availability.

如果支持“TimeSensitiveNetworking”或“TimeSensitiveCommunication”功能，TSN AF或TSCTSF可以订

阅DS-TT PMIC和/或NW-TT PMIC(s)和/或UMIC可用性的通知。

The TSN AF or TSCTSF may also provide TSC Assistance Container and QoS related data and/or a

UMIC and/or one or more PMIC(s).

TSN AF或TSCTSF还可以提供TSC辅助容器和QoS相关数据以及/或一个或多个UMIC和/或PMIC(s)。

1a The AF provides the Service Information to the PCF by sending a Diameter AAR for a new Rx

Diameter session.

AF通过发送一个新的Rx Diameter会话的Diameter AAR向PCF提供服务信息。

2 The PCF stores the Service Information received in step 1.

PCF存储第1步收到的服务信息。

3-4 If the PCF does not have the subscription data for the SUPI, DNN and S-NSSAI, it invokes the

Nudr_DataRepository_Query service operation to the UDR by sending the HTTP GET request to the

"SessionManagementPolicyData" resource.

如果PCF没有SUPI、DNN和S-NSSAI的订阅数据，它通过向“SessionManagementPolicyData”资源发送

HTTP GET请求，调用UDR的Nudr_DataRepository_Query服务操作。

The UDR sends an HTTP "200 OK" response to the PCF with the subscription data.

UDR向PCF发送带有订阅数据的HTTP“200 OK”响应。

Additionally, when network slice data rate related policy control is supported by the PCF, the PCF may

invoke the Nudr_DataRepository_Query service operation towards the UDR by sending an HTTP GET

request targeting the "SlicePolicyControlData" resource as specified in clause 5.2.12 of 3GPP TS

29.519.

此外，当PCF支持网络切片数据速率相关的策略控制时，PCF可能通过发送针对“SlicePolicyControlData”

资源的HTTP GET请求，调用UDR的Nudr_DataRepository_Query服务操作，如3GPP TS 29.519第

5.2.12节所指定。

The UDR sends an HTTP "200 OK" response to the PCF with the network slice policy control data.

UDR向PCF发送带有网络切片策略控制数据的HTTP“200 OK”响应。

Additionally, if the AF provided a Background Data Transfer Reference ID in step 1 or step 1a and the

corresponding transfer policy is not locally stored in the PCF, the PCF sends the HTTP GET request to

the "IndividualBdtData" resource.

此外，如果AF在第1步或第1a步提供了后台数据传输参考ID，并且相应的传输策略没有在PCF中本地存

储，PCF向“IndividualBdtData”资源发送HTTP GET请求。

The UDR sends an HTTP "200 OK" response to the PCF with the Background Data Transfer policy.

UDR向PCF发送带有后台数据传输策略的HTTP“200 OK”响应。

If the AF session is for MPS for DTS invocation, the PCF performs MPS subscription checks if and only

if requested by the AF as described in clause 4.4.11 of 3GPP TS 29.214 or as described in clause

4.2.2.12.2 of 3GPP TS 29.514.

如果AF会话是用于DTS的MPS调用，PCF仅在AF的请求下执行MPS订阅检查，如3GPP TS 29.214第

4.4.11节或3GPP TS 29.514第4.2.2.12.2节所述。

5 The PCF identifies the affected established PDU Session(s) using the information previously received

from the SMF and the Service Information received from the AF.

PCF使用之前从SMF接收的信息和服务信息，识别受影响的已建立的PDU会话。

6 The PCF sends an HTTP "201 Created" response to the AF.

PCF向AF发送HTTP“201 Created”响应。

6a The PCF sends a Diameter AAA to the AF.

PCF向AF发送Diameter AAA。

7 The AF may invoke the Npcf_PolicyAuthorization_Subscribe service operation by sending the HTTP

PUT request to the "Events Subscription" resource to subscribe to events in the PCF.

AF可以通过向“事件订阅”资源发送HTTP PUT请求，调用Npcf_PolicyAuthorization_Subscribe服务操作来

订阅PCF中的事件。

The request includes the events that subscribes and a Notification URI to indicate to the PCF where to

send the notification of the subscribed events, as described in clause 4.2.6 of 3GPP TS 29.514.

请求包括订阅的事件和一个通知URI，以指示PCF发送订阅事件的通知，如3GPP TS 29.514 第4.2.6节所

8 The PCF sends an HTTP "201 Created" response to the AF.

PCF向AF发送HTTP“201 Created”响应。

9 The PCF interacts with SMF according to Figure 5.2.2.2-1.

PCF根据图5.2.2.2-1与SMF交互。

第9步的 Figure 5.2.2.2-1是Interactions between SMF, PCF and CHF。

该图实际上SM Policy的修改流程。如下图所示：

该流程由PCF来触发。也就是紧跟上面的第9步。

然后把这个图的1~7都跑完就可以了。