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| Applicable Products or Functional Area | 5G-PCF |
| Applicable Platform(s) | SMI |
| Feature Default Setting | Enabled – Configuration Required |
| Related Changes in this Release | Not Applicable |
| Related Documentation | Not Applicable |
| Revision Details | Release |
|---|---|
| First Introduced. |
2020.01.0 |
PCF supports the Flexible QoS Actions feature on the N7 interface. During policy management on the N7 interface, PCF sends session rules that are based on the configured QoS to the SMF.
The following QoS actions are applicable to an uplink AMBR and downlink AMBR are configurable for calculating the session rules. The default configuration is QoS-Enforcement.
QoS-Bounding facilitates PCF to calculate the minimum QoS between the Requested QoS (from the SMF) and the calculated QoS based on the internal logic, and authorize that in the response message to the SMF.
QoS-Mirroring is the ability for the PCF to grant or authorize the requests from the SMF.
QoS-Enforcement is the ability for the PCF to enforce the calculated QoS (computed based on PCF's internal logic) back to the SMF in the request or response message. This is the default configuration.
This section describes how to configure the QoS Actions on the N7 interface using the following service.
This section describes the parameters for the OverrideSessionRule configurations.
The OverrideSessionRule service configuration is used to override the N7 default bearer QoS APN AMBR UL/DL values.
PCF first evaluates the derived QoS values for default bearer and then assesses the table provided in OverrideSessionRule service configuration using the key values. It further determines the result APN AMBR UL/DL values. If the "Condition to Override" is "LT", then PCF limits the derived QoS values with these override values. If the "Condition to Override" is "GT", then PCF selects the maximum UL/DL among the derived values and overrides these values.
 Note |
The OverrideSessionRule configuration works in conjunction with the SessionRuleAction configuration. For information on SessionRuleAction, see SessionRuleAction. |
Before setting the service parameters, ensure that you create a use case template and add a service for this configuration. For details, see Configuring the Use Case Template and Adding a Service.
The following table describes the OverrideSessionRule service parameters.
|
Parameters |
Description |
|---|---|
|
Priority |
Indicates the priority of the server when sending requests. Higher number is equal to higher priority. |
|
Stg Reference |
Refers to the STG that contains the QoS reference and the QoS parameter values such as QCI and APN-MBRUL. |
|
List Of Input Column Avp Pairs (List) |
The list that specifies the mapping for input (key) columns to determine their values. Based on these values, the STG is queried. ColumnAndAvpPair
|
|
Apn Agg Max Bit Rate U L |
Reference to the STG output column that gives the "APNAggregate-Max-Bitrate-UL" value for limiting QoS. This value and the corresponding value derived after QoS actions are compared to determine the final value for APN-Aggregate-Max-Bitrate-UL. |
|
Apn Agg Max Bit Rate D L |
Reference to the STG output column that gives the "APNAggregate-Max-Bitrate-DL" value for limiting QoS. This value and the corresponding value derived after QoS actions are compared to determine the final value for APN-Aggregate-Max-Bitrate-DL. |
|
Condition to Override |
The condition to compare the values. Only two values are supported "LT" and "GT". If LT is selected, PCF uses the lowest QoS parameter value from the two QoS references. If GT is selected, PCF considers the highest QoS parameter value from the two QoS references. Possible Values:
|
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