Existing Bearers Are Rejected Call Flow

This section describes the Existing Bearers Are Rejected call flow.

Existing Bearers Are Rejected Call Flow
All Bearers Are Rejected Call Flow Description

Step

Description

1

The SMF sends a N7 Create request to the PCF.

2

The PCF responds to the SMF with a N7 Create Success response.

3

The AF sends N5 Create request (Audio and Video) message to the PCF.

4

The PCF performs the N5 Authorization CRD lookup.

5

The N5 Authorization CRD evaluates both, the audio and video bearers.

If successful authorization, PCF sends N5 Create success response to AF.

6

The PCF sends N7 Notify (Audio and Video) message.

7

The SMF responds with N7-Notify-Resp (Success) to the PCF.

8

The SMF sends N7 Update (RAT-Type Change).

9

The PCF performs the N5 Authorization CRD lookup.

10

When PCF reevaluates the existing bearer and the N5 Authorization CRD detects a VIDEO bearer with the Bearer-Authorization=REJECT, PCF rejects the bearer with Error-Message=Throttled.

The PCF sends N7-UPDATE (Success) Charging Rule Remove for VIDEO to the SMF.

11

The PCF sends N5 Notify request (Video) AF-Event=FAILED_RESOURCES_ALLOCATION to the AF

12

The AF responds with N5 Notify success-response to the PCF.