Multimedia priority service for wireless devices

1. A method, comprising:

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

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

sending, by the wireless device to the AMF, a packet data unit (PDU) session establishment request after receiving the parameter for the MPS configuration of the wireless device,

wherein a create session management context request message is generated in response to the PDU session establishment request, wherein the session management context request message comprises a header indicating priority information of the wireless device.

2. The method of claim 1 , wherein 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 sending the PDU session establishment request is configured to trigger the AMF to send the create session management context request message 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 receiving, by the wireless device from the AMF, 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 receiving, by the wireless device from the AMF, 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. A wireless device, comprising:

one or more processors; and

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

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

receive, from the AMF, a wireless device configuration update command comprising a parameter for a multimedia priority service (MPS) configuration of the wireless device; and

send, to the AMF, a packet data unit (PDU) session establishment request after receiving the parameter for the MPS configuration of the wireless device,

wherein a create session management context request message is generated in response to the PDU session establishment request, wherein the session management context request message comprises a header indicating priority information of the wireless device.

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

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

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

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

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

18. The wireless device of claim 11 , wherein the instructions further cause the wireless device to receive, from the AMF, 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 wireless device 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, generate 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.