With the previous implementation, subscriber bandwidth is limited based on QoS provided by PCRF in order to comply with 3GPP standards. In this release, subscriber is provided with unlimited bandwidth by allowing QoS override based on LAC and/or TAC (individual or range) configured in a local-policy (LP) rule on the gateway. If the subscriber is in the LAC or TAC region and hits the LP rule, the gateway ignores the QoS limits imposed by PCRF and allows the subscriber to have unlimited bandwidth.
This feature requires the license to configure local-policy. For more information on the licensing requirements, contact Cisco account representative.
Configuration changes are performed at both ECS and local-policy to achieve this functionality.
For this feature to work, the following operations must be performed in the order as specified below:
When a subscriber is in the configured RAI or TAI range, the local-policy identifies the associated local-policy rule and sends the rule to ECS for activation.
ECS provides a configuration in the service scheme, which matches the active lp-rules trigger-condition and associates the trigger-action to be taken when a local-policy rule activation is received. ECS then performs throttle suppression to provide unlimited bandwidth based on the subscriber location.
The service-scheme is associated with the subscriber based on the conditions configured under subscriber-class at call setup time.
The location based throttle suppress will override the existing functionality of time based throttle suppression. Irrespective of the configured time delay, if the subscriber is in a particular location for which throttle suppression has been configured then it will hold effect.
Whenever there is new-call or location-change event, the rulebase is checked for location and the LP rules to add and delete are passed to ECS module.
By default, the Change Reporting Action (CRA) notification is sent to MME when ULI-Change, TAI-Change and/or ECGI-Change are installed as part of actiondef configuration. New CLI configuration is provided to control the CRA notification towards MME.
The QoS Override feature can be enabled for subscribers classified based on APN, virtual-APN, rulebase or a combination of these.
This feature works in local-policy fallback, dual-policy mode, and dual-fallback modes. In local-policy fallback mode, irrespective of where the event triggers are being registered, all the event triggers will be reported to local-policy and the corresponding actions will be taken. Whereas in the dual-policy and dual-fallback modes, the event triggers are sent to both local-policy and PCRF depending on where the triggers are registered. Local-policy module handles all the location related events and PCRF handles all other event triggers.
Relationships to Other Features
It is required to have both local-policy and service scheme framework configured to enable this feature for a subscriber. For redundancy support, the corresponding ICSR configuration must also be present.
The service-scheme framework helps in overriding feature behavior specific to a subscriber or a set of subscribers. The user can update the policies specific to subscribers based on preconfigured events. For more information on the service-scheme framework, see the ECS Administration Guide.