Service processing method and system, and policy control and charging rules function

A service processing system for discriminatively handling service data streams from a plurality of service data streams, the service processing system comprising:

• a Policy Control and Charging Rules Function (PCRF) entity including a processor and a memory, enabled to:
• obtain policy context information, which comprises at least one of:
• a service type, a service priority, a user priority, and a custom-defined priority;
• generate bearer priority information according to the policy context information, wherein the bearer priority information designates a priority level of the service data stream within a bearer layer at a QoS level;
• send the bearer priority information to a Policy and Charging Enforcement Function (PCEF) entity;
• wherein:
• the PCEF entity is enabled to handle within the bearer layer along with other service data streams which are at the same QoS level according to the bearer priority information, wherein precedence is given to a service data stream having a higher bearer priority level;
• and
• add a bearer priority information element:
• wherein the bearer priority information element is set into a bearer priority message directly or set into an existing information element;
• wherein a type of the bearer priority message is a Credit Control Answer (CCA) message, or a Re-Authentication Request (RAR) message;
• and
• wherein a type of the existing information element is a Charging-Rule-Definition Attribute Value Pair (AVP) information element, or an Authorized-Quality of Service (QoS) AVP information element.

A Policy Control and Charging Rules Function (PCRF) entity including a processor and a memory, comprising:

• an obtaining unit, enabled to obtain policy context information, comprises at least one of:
• a service type, a service priority, a user priority, and a custom-defined priority;
• a generating unit, enabled to generate bearer priority information according to the policy context information, wherein the bearer priority information designates a priority level of the service data stream within a bearer layer at a QoS level;
• a sending unit, enabled to send the bearer priority information to a Policy and Charging Enforcement Function (PCEF) entity, such that the PCEF entity discriminately processes the data stream along with other service data streams within the bearer layer which are at the same QoS level according to the bearer priority information, wherein precedence is given to a service data stream having a higher bearer priority;
• and
• an adding unit, enabled to add a bearer priority information element:
• wherein the bearer priority information element is set into a bearer priority message directly or set into an existing information element;
• wherein a type of the bearer priority message is a Credit Control Answer (CCA) message, or a Re-Authentication Request (RAR) message;
• and
• wherein a type of the existing information element is a Charging-Rule-Definition Attribute Value Pair (AVP) information element, or an Authorized-Quality of Service (QoS) AVP information element.