Roaming session termination triggered by roaming agreement/partner deletion

1. A method performed by a policy and charging rules node (PCRN) for processing a change in a status of a roaming partner, the method comprising:

receiving, at the PCRN, a message indicating the change in the status of the roaming partner;

identifying roaming subscriber sessions associated with the roaming partner;

determining home based roaming subscriber sessions among the identified subscriber sessions;

marking the determined home based roaming subscriber sessions for termination; and

sending a termination message to a home policy and charging enforcement node for the marked home based roaming subscriber sessions.

2. The method of claim 1 , further comprising:

determining visited based roaming subscriber sessions among the identified roaming subscriber sessions; and

sending a termination message to a visited PCRN for the determined visited based roaming subscriber sessions.

3. The method of claim 2 , wherein the termination message sent to the visited PCRN is a S9 reauthorization request (RAR).

4. The method of claim 3 , further comprising:

receiving an S9 reauthorization answer (RAA) message from the visited PCRN indicating the termination of the determined visited based roaming subscriber sessions.

5. The method of claim 1 , wherein the home roaming subscriber sessions include IP-CAN and S9 sessions.

6. The method of claim 1 , wherein the termination message is a Gx reauthorization request (RAR).

7. The method of claim 1 , further comprising:

receiving a Gx message for a first marked home based subscriber session for termination; and

sending a Gxx message for the first marked home based subscriber session in response to the Gx message.

8. The method of claim 7 , further comprising:

receiving a termination complete message for the first marked home based subscriber session.

9. The method of claim 1 , further comprising:

receiving a Gxx message for a first marked home based subscriber session for termination; and

sending a Gx message for the first marked home based subscriber session in response to the Gxx message.

10. The method of claim 9 , further comprising:

receiving a termination complete message for the first marked home based subscriber session.

11. The method of claim 1 , wherein the change in status of the roaming partner includes deletion of the roaming partner.

12. The method of claim 11 , further comprising:

rejecting any requests to establish any S9 sessions related to the deleted roaming partner.

13. A method performed by a visited policy and charging rules node (PCRN) for processing a change in a status of a roaming partner, the method comprising:

receiving, at the visited PCRN, a message indicating the change in the status of the roaming partner;

determining visited based roaming subscriber sessions among the identified subscriber sessions;

marking the determined visited based roaming subscriber sessions for termination; and

sending a termination message to a visited policy and charging enforcement node for the marked visited based roaming subscriber sessions.

14. The method of claim 13 , wherein the change in status of the roaming partner includes one of a deletion of the roaming partner, a deletion of a roaming agreement for the roaming partner, and a removal of the roaming partner from a roaming agreement.

15. The method of claim 13 , wherein the visited based roaming subscriber sessions include IP-CAN and S9 sessions.

16. The method of claim 13 , wherein the termination message is a Gx reauthorization request (RAR).

17. The method of claim 16 , further comprising:

receiving a termination complete message for the first marked home based subscriber session.

18. The method of claim 13 , further comprising:

rejecting any requests to establish any S9 sessions related to a roaming partner with a status change.

19. The method of claim 13 , further comprising:

accepting a S9 message for a first marked visited based subscriber session for termination.