Configuring the N15 Policy Triggers

This section describes how to configure the N15 policy event triggers.

You can configure the event triggers through the Custom Reference Data (CRD) table. The triggers are a group of conditions used to evaluate a table. PCF subscribes to the configured triggers from the AMF. When the configured triggers are violated, AMF notifies PCF and sends the trigger information.

To configure the N15 policy event triggers, use the following configuration:

  1. Log in to Policy Builder.

  2. Click the Reference Data tab.

  3. In the left pane, click Custom Reference Data Tables > Custom Reference Data Triggers.

  4. Select the service for which you want to create the trigger.

  5. In the right pane, enter the following trigger parameter:

    Parameter

    Description

    Priority

    Indicates the priority of the event triggers that must be used in case multiple service initiator conditions match.

    Trigger

    Specifies the trigger against which the N15 policy object is evaluated.

    You can configure the following triggers:

    • LOC_CH: Location change. This trigger is issued when the tracking area of the UE is changed.

    • RFSP_CH: Change in the RAT Frequency Selection Priority. The UDM notifies the AMF when the subscribed RFSP index is changed.

    • SERV_AREA_CH: Change in the Service Area Restrictions. The UDM notifies the AMF when the subscribed service area restriction information has modified.