Procedure to update the parameters related to unified access control

1. A method for core network node, the method comprising:

sending, to a User Equipment (UE), a REGISTRATION ACCEPT message containing at least one operator-defined access category definitions which causes the UE to send a REGISTRATION COMPLETE message,

starting a timer in a case where the at least one operator-defined access category definitions are included in the REGISTRATION ACCEPT message,

receiving, from the UE, the REGISTRATION COMPLETE message indicating acknowledge reception of the at least one operator-defined access category definitions, and

stopping the timer upon receiving a REGISTRATION COMPLETE message, wherein the operator-defined access category definitions includes OS id+OS App id.

2. The method according to claim 1 , further comprising:

resending the REGISTRATION ACCEPT message if the core network node does not receive the REGISTRATION COMPLETE message before the timer expires.

3. A method for User Equipment (UE), the method comprising:

receiving, from a core network node, a REGISTRATION ACCEPT message including at least one operator-defined access category definition;

storing the received at least one operator-defined access category definition; and

sending, to the core network node, a REGISTRATION COMPLETE message indicating acknowledge of the received at least one operator-defined access category definition, wherein a REGISTRATION COMPLETE message causes the core network node to stop a timer which the core network starts the timer in a case where the at least one operator-defined access category definitions are included in the REGISTRATION ACCEPT message, wherein the operator-defined access category definitions includes OS id+OS App id.

4. The method according to claim 3 , further comprising:

deleting a stored operator-defined access category definition before the storing the received at least one operator-defined access category definition in a case where the UE already stored operator-defined access category definition.

5. The method according to claim 4 , further comprising:

receiving, from the core network, a second REGISTRATION ACCEPT message including at least one operator-defined access category definition in a case where the core network node did not receive the REGISTRATION COMPLETE message before a timer expires wherein the timer starts counting when the core network node sends the REGISTRATION ACCEPT message.

6. The method according to claim 3 , further comprising:

sending, to the core network node, a first REGISTRATION REQUEST message; and

starting a timer, wherein the UE configured to send, to the core network node, a second REGISTRATION REQUEST message when the timer expires.

7. The method according to claim 6 , wherein

the REGISTRATION REQUEST message indicating that the UE is not configured with operator-defined access category definition.

8. A core network node comprising:

a memory; and

at least one hardware processor coupled to the memory,

wherein the at least one hardware processor is configured to:

send, to a User Equipment (UE), a REGISTRATION ACCEPT message containing at least one operator-defined access category definitions which causes the UE to a send REGISTRATION COMPLETE message,

start a timer in a case where the at least one operator-defined access category definitions are included in the REGISTRATION ACCEPT message,

receive, from the UE, the REGISTRATION COMPLETE message indicating acknowledge reception of the at least one operator-defined access category definitions, and

stop the timer upon receiving a REGISTRATION COMPLETE message, wherein the operator-defined access category definitions includes OS id+OS App id.

9. The core network node according to claim 8 , wherein

the at least one hardware processor is further configured to:

resend the REGISTRATION ACCEPT message if the core network node does not receive the REGISTRATION COMPLETE message before the timer expires.

10. A User Equipment (UE) comprising:

a memory; and

at least one hardware processor coupled to the memory,

wherein the at least one hardware processor is configured to:

receive, from a core network node, a REGISTRATION ACCEPT message including at least one operator-defined access category definition;

store the received at least one operator-defined access category definition; and

send, to the core network node, a REGISTRATION COMPLETE message indicating acknowledge of the received at least one operator-defined access category definition, wherein a REGISTRATION COMPLETE message causes the core network node to stop a timer which the core network starts the timer in a case where the at least one operator-defined access category definitions are included in the REGISTRATION ACCEPT message, wherein the operator-defined access category definitions includes OS id+OS App id.

11. The UE according to claim 10 , wherein

the at least one hardware processor is configured to delete a stored operator-defined access category definition before the at least one hardware processor stores the received at least one operator-defined access category definition in a case where the at least one hardware processor already stored operator-defined access category definition.

12. The UE according to claim 11 , wherein

the at least one hardware processor is configured to receive, from the core network, a second REGISTRATION ACCEPT message including at least one operator-defined access category definition in a case where the core network node did not receive the REGISTRATION COMPLETE message before a timer expires wherein the timer starts counting when the core network node sends the REGISTRATION ACCEPT message.

13. The UE according to claim 10 , wherein

the at least one hardware processor is configured to:

send, to the core network node, a first REGISTRATION REQUEST message; and

start a timer, wherein the UE is configured to send, to the core network node, a second REGISTRATION REQUEST message when the timer expires.

14. The UE according to claim 13 , wherein

the REGISTRATION REQUEST message indicating that the UE is not configured with operator-defined access category definition.