Binding of SD messages with radius messages

1. A method performed by a policy and charging rules node (PCRN), the method comprising:

receiving a RADIUS accounting request (ACR) start message from a network access server (NAS);

establishing a RADIUS session with the NAS;

applying rules by a rules engine to information in the ACR start message to determine a traffic detection function (TDF) to be updated;

establishing a Sd session with the TDF; and

binding the Sd session to the RADIUS session.

2. The method of claim 1 , further comprising:

determining application detection and control (ADC) rules to be applied to the TDF; and

transmitting the determined ADC rules to the determined TDF.

3. The method of claim 2 , wherein the determined TDF installs the determined ADC rules.

4. The method of claim 1 , further comprising:

receiving a RADIUS ACR stop message associated with the received ACR start message;

applying the rules by the rules engine to information in the ACR stop message to determine a traffic detection function (TDF) to be updated; and

transmitting a terminate message to remove the determined ADC rules on the determined TDF.

5. The method of claim 4 , wherein the determined TDF uninstalls the determined ADC rules.

6. The method of claim 1 , further comprising:

unbinding the Sd session and the RADIUS session; and

terminating the Sd session.

7. The method of claim 6 , further comprising terminating the RADIUS session.

8. The method of claim 1 , further comprising:

receiving an policy update RADIUS message from the NAS;

applying rules by a rules engine to information in the update RADIUS message to determine a policy update for a traffic detection function (TDF); and

sending a DIAMETER policy update message to the TDF.

9. The method of claim 1 , wherein the RADIUS session is associated with a specific subscriber.

10. The method of claim 1 , wherein the applied rules include logical instructions applied to an attribute-value pair (AVP) in the information in the ACR start message.

11. A non-transitory computer-readable storage medium encoded with instructions executable by a processor in a charging rules node (PCRN), the non-transitory computer readable storage medium comprising:

instructions for receiving a RADIUS accounting request (ACR) start message from a network access server (NAS);

instructions for establishing a RADIUS session with the NAS;

instructions for applying rules by a rules engine to information in the ACR start message to determine a traffic detection function (TDF) to be updated;

instructions for establishing a Sd session with the TDF; and

instructions for binding the Sd session to the RADIUS session.

12. The non-transitory computer-readable storage medium of claim 11 , further comprising:

instructions for determining application detection and control (ADC) rules to be applied to the TDF; and

instructions for transmitting the determined ADC rules to the determined TDF.

13. The non-transitory computer-readable storage medium of claim 11 , further comprising:

instructions for receiving a RADIUS ACR stop message associated with the received ACR start message;

instructions for applying the rules by the rules engine to information in the ACR stop message to determine a traffic detection function (TDF) to be updated; and

instructions for transmitting a terminate message to remove the determined ADC rules on the determined TDF.

14. The non-transitory computer-readable storage medium of claim 11 , further comprising:

instructions for unbinding the Sd session and the RADIUS session; and

instructions for terminating the Sd session.

15. The non-transitory computer-readable storage medium of claim 14 , further comprising terminating the RADIUS session.

16. The non-transitory computer-readable storage medium of claim 11 , further comprising:

instructions for receiving an policy update RADIUS message from the NAS;

instructions for applying rules by a rules engine to information in the update RADIUS message to determine a policy update for a traffic detection function (TDF); and

instructions for sending a DIAMETER policy update message to the TDF.

17. The non-transitory computer-readable storage medium of claim 11 , wherein the RADIUS session is associated with a specific subscriber.

18. The non-transitory computer-readable storage medium of claim 11 , wherein the applied rules include logical instructions applied to an attribute-value pair (AVP) in the information in the ACR start message.