Multimedia priority service

1. A method comprising:

sending, by an access and mobility management function (AMF) to a wireless device, a registration accept message comprising one or more configuration parameters of the wireless device;

sending, by the AMF to the wireless device, a wireless device configuration update command comprising a parameter for a multimedia priority service (MPS) configuration of the wireless device;

receiving, by the AMF from the wireless device, a packet data unit (PDU) session establishment request; and

in response to the PDU session establishment request, sending, by the AMF to a session management function (SMF), a create session management context request message comprising a header indicating priority information of the wireless device.

2. The method of claim 1 , wherein the priority information indicates that signaling associated with the wireless device is exempt from non-access stratum (NAS) level congestion control.

3. The method of claim 1 , wherein the PDU session establishment request indicates that the session is for MPS.

4. The method of claim 1 , wherein the sending the create session management context request message is based on the wireless device being associated with the MPS configuration.

5. The method of claim 1 , wherein the wireless device configuration update command updates the one or more configuration parameters.

6. The method of claim 1 , wherein the one or more configuration parameters comprise one or more of:

a data network name (DNN); and

a slice identifier of a network slice.

7. The method of claim 1 , further comprising sending, to the wireless device, a connection capability indication indicating network support for a connection of the wireless device for the MPS.

8. The method of claim 1 , further comprising sending, to the wireless device, a user equipment route selection policy (URSP) comprising one or more of:

a data network name (DNN) that supports the MPS; and

a slice identifier of a slice that supports the MPS.

9. The method of claim 8 , wherein the URSP comprises a traffic descriptor associated with one or more of:

an MPS-unique identifier; and

an MPS code.

10. The method of claim 9 , wherein the traffic descriptor is associated with a set of rules comprising one or more of:

a data network name (DNN) associated with the traffic descriptor associated with the MPS-unique identifier; and

a slice identifier of a network slice associated with the traffic descriptor associated with the MPS-unique identifier.

11. An access and mobility management function (AMF) comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the AMF to:

send, to a wireless device, a registration accept message comprising one or more configuration parameters of the wireless device;

send, to the wireless device, a wireless device configuration update command comprising a parameter for a multimedia priority service (MPS) configuration of the wireless device;

receive, from the wireless device, a packet data unit (PDU) session establishment request; and

in response to the PDU session establishment request, send, to a session management function (SMF), a create session management context request message comprising a header indicating priority information of the wireless device.

12. The AMF of claim 11 , wherein the priority information indicates that signaling associated with the wireless device is exempt from non-access stratum (NAS) level congestion control.

13. The AMF of claim 11 , wherein the PDU session establishment request indicates that the session is for MPS.

14. The AMF of claim 11 , wherein the sending the create session management context request message is based on the wireless device being associated with the MPS configuration.

15. The AMF of claim 11 , wherein the wireless device configuration update command updates the one or more configuration parameters.

16. The AMF of claim 11 , wherein the one or more configuration parameters comprise one or more of:

a data network name (DNN); and

a slice identifier of a network slice.

17. The AMF of claim 11 , wherein the instructions further cause the AMF to send, to the wireless device, a connection capability indication indicating network support for a connection of the wireless device for the MPS.

18. The AMF of claim 11 , wherein the instructions further cause the AMF to send, to the wireless device, a user equipment route selection policy (URSP) comprising one or more of:

a data network name (DNN) that supports the MPS; and

a slice identifier of a slice that supports the MPS.

19. The AMF of claim 18 , wherein the URSP comprises a traffic descriptor associated with one or more of:

an MPS-unique identifier; and

an MPS code.

20. A system comprising:

an access and mobility management function (AMF) comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the AMF to:

send, to a wireless device, a registration accept message comprising one or more configuration parameters of the wireless device;

send, to the wireless device, a wireless device configuration update command comprising a parameter for a multimedia priority service (MPS) configuration of the wireless device;

receive, from the wireless device, a packet data unit (PDU) session establishment request; and

in response to the PDU session establishment request, send, to a session management function (SMF), a create session management context request message comprising a header indicating priority information of the wireless device; and

the wireless device, wherein the wireless device comprises:

one or more second processors; and

second memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive, from the AMF, the registration accept message;

receive, from the AMF, the wireless device configuration update command; and

send, to the AMF, the PDU session establishment request.