NPLI in Rx RAR Call Flow

This section describes the NPLI in Rx RAR call flow.

NPLI in Rx RAR Call Flow
NPLI in Rx RAR Call Flow Description

Step

Description

1

The SMF sends a SMPolicyControl_Ceate request to the PCF.

2

The PCF responds to the SMPolicyControl_Create request.

3

The AF sends an Authenticate-Authorize-Request (AAR) message to the PCF. The message contains Required-Access-Info AVP requesting the access network information required for the AF session.

4

The PCF sends the AAA request to the AF.

5

If the NetLoc feature is enabled, then the PCF sends an SMPolicyControl_UpdateNotify request toward the SMF.

6

In response to the SMPolicyControl_UpdateNotify request, the SMF sends the access network information to the PCF.

7

The PCF sends the SMPolicyControl_Update request to the SMF.

8

The SMF sends the SMPolicyControl_Update request to the PCF.

9

After the establishing the Rx-session and the Required-Access-Info lookup, the PCF sends the Rx Re-Authorization Request message to the AF.

10

The AF sends the Rx Re-Authorization Request response containing the 3GPP-User-Location-Info AVP and access network information report to the PCF.

11

If the session terminates, the SMF sends a SMPolicyControl_Delete request to the PCF.

12

The PCF responds to SMF for the SMPolicyControl_Delete request.

13

The PCF sends the Abort-Session-Request message to the AF.

14

The AF responds with the Abort-Session-Answer to the PCF.

15

The AF sends the Session-Termination-Request to the PCF.

16

The PCF responds with the Session-Termination-Answer message to the AF.