Wireless communications for asymmetric services

1. A method comprising:

receiving, by a wireless device from a base station, a first message indicating an internet protocol (IP) address for a first communication session for uplink traffic associated with a wireless device application;

sending a second message for establishment of a second communication session for downlink traffic associated with the wireless device application, wherein the second message indicates an association between the second communication session and the first communication session; and

receiving a third message indicating the IP address is for the second communication session.

2. The method of claim 1 , further comprising:

sending, via the first communication session, a first data packet comprising the IP address; and

receiving, via the second communication session, a second data packet comprising the IP address.

3. The method of claim 1 , wherein the second message comprises a session correlation indication indicating that the second communication session is associated with the first communication session.

4. The method of claim 1 , wherein the second message indicates that a first network slice for the first communication session is associated with a second network slice for the second communication session.

5. The method of claim 1 , wherein the second message indicates that the first communication session is associated with a first service type and the second communication session is associated with a second service type different from the first service type.

6. The method of claim 1 , wherein the second message comprises at least one of:

a packet data unit (PDU) session identifier of the first communication session;

the IP address;

first single network slice selection assistance information (S-NSSAI) of the first communication session; or

a first network slice instance identifier for the first S-NSSAI.

7. The method of claim 1 , wherein the sending the second message comprises sending, via the base station, the second message to an access and mobility management functions (AMF) device.

8. The method of claim 1 , wherein the first communication session is associated with a first slice service type (SST) and the second communication session is associated with a second SST.

9. The method of claim 1 , further comprising sending a third message for establishment of the first communication session.

10. The method of claim 1 , wherein the first communication session is a first packet data unit (PDU) session and the second communication session is a second PDU session.

11. A method comprising:

receiving, by a first device from a second device, a first establishment request message for a first packet data unit (PDU) session for uplink traffic associated with a wireless device application;

receiving, from the second device, a second establishment request message for a second PDU session for downlink traffic associated with the wireless device application;

determining, based on the first PDU session and the second PDU session being for a same wireless device application, an IP address for the first PDU session and the second PDU session; and

sending, to the second device, the IP address.

12. The method of claim 11 , wherein the first device is a session management function (SMF) device and the second device is an access and mobility management function (AMF) device.

13. The method of claim 11 , further comprising:

sending, to a first user plane function (UPF) device for the first PDU session, a first user plane rule comprising the IP address; and

sending, to a second UPF device for the second PDU session, a second user plane rule comprising the IP address.

14. The method of claim 11 , wherein the second establishment request message comprises at least one of:

a PDU session identifier of the first PDU session;

the IP address;

first single network slice selection assistance information (S-NSSAI) of the first PDU session; or

a first network slice instance identifier for the first S-NSSAI.

15. The method of claim 11 , wherein the second establishment request message indicates that a first network slice for the uplink traffic is associated with a second network slice for the downlink traffic.

16. The method of claim 11 , wherein the second establishment request message indicates that the first PDU session is associated with a first service type and the second PDU session is associated with a second service type different from the first service type.

17. The method of claim 11 , wherein the first PDU session is associated with a first slice service type (SST) and the second PDU session is associated with a second SST.

18. 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 a base station, a first message indicating an internet protocol (IP) address for a first communication session for uplink traffic associated with a wireless device application;

send a second message for establishment of a second communication session for downlink traffic associated with the wireless device application, wherein the second message indicates an association between the second communication session and the first communication session; and

receive a third message indicating the IP address is for the second communication session.

19. The wireless device of claim 18 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:

send, via the first communication session, a first data packet comprising the IP address; and

receive, via the second communication session, a second data packet comprising the IP address.

20. The wireless device of claim 18 , wherein the second message comprises a session correlation indication indicating that the second communication session is associated with the first communication session.

21. The wireless device of claim 18 , wherein the second message indicates that a first network slice for the first communication session is associated with a second network slice for the second communication session.

22. The wireless device of claim 18 , wherein the second message indicates that the first communication session is associated with a first service type and the second communication session is associated with a second service type different from the first service type.

23. The wireless device of claim 18 , wherein the second message comprises at least one of:

a packet data unit (PDU) session identifier of the first communication session;

the IP address;

first single network slice selection assistance information (S-NSSAI) of the first communication session; or

a first network slice instance identifier for the first S-NSSAI.

24. The wireless device of claim 18 , wherein the instructions, when executed by the one or more processors, cause the wireless device to send the second message by causing sending, via the base station, the second message to an access and mobility management functions (AMF) device.

25. The wireless device of claim 18 , wherein the first communication session is associated with a first slice service type (SST) and the second communication session is associated with a second SST.

26. The wireless device of claim 18 , wherein the instructions, when executed by the one or more processors, cause the wireless device to send a third message for establishment of the first communication session.

27. The wireless device of claim 18 , wherein the first communication session is a first packet data unit (PDU) session and the second communication session is a second PDU session.

28. A first device comprising:

one or more processors; and

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

receive, from a second device, a first establishment request message for a first packet data unit (PDU) session for uplink traffic of a wireless device application;

receive, from the second device, a second establishment request message for a second PDU session for downlink traffic of the wireless device application;

determine, based on the first PDU session and the second PDU session being for a same wireless device application, an IP address for the first PDU session and the second PDU session; and

send, to the second device, the IP address.

29. The first device of claim 28 , wherein the first device is a session management function (SMF) device, wherein the instructions, when executed by the one or more processors, cause the first device to:

receive the first establishment request message by causing receiving the first establishment request message from an access and mobility management function (AMF) device; and

receive the second establishment request message by causing receiving the second establishment request message from the AMF device.

30. The first device of claim 28 , wherein the instructions, when executed by the one or more processors, cause the first device to:

send, to a first user plane function (UPF) device for the first PDU session, a first user plane rule comprising the IP address; and

send, to a second UPF device for the second PDU session, a second user plane rule comprising the IP address.

31. The first device of claim 28 , wherein the second establishment request message comprises at least one of:

a PDU session identifier of the first PDU session;

the IP address;

first single network slice selection assistance information (S-NSSAI) of the first PDU session; or

a first network slice instance identifier for the first S-NSSAI.

32. The first device of claim 28 , wherein the second establishment request message indicates that a first network slice for the uplink traffic is associated with a second network slice for the downlink traffic.

33. The first device of claim 28 , wherein the second establishment request message indicates that the first PDU session is associated with a first service type and the second PDU session is associated with a second service type different from the first service type.

34. The first device of claim 28 , wherein the first PDU session is associated with a first slice service type (SST) and the second PDU session is associated with a second SST.

35. A non-transitory computer readable medium storing instructions that, when executed, cause:

receiving, by a wireless device from a base station, a first message indicating an internet protocol (IP) address for a first communication session for uplink traffic associated with a wireless device application;

sending a second message for establishment of a second communication session for downlink traffic associated with the wireless device application, wherein the second message indicates an association between the second communication session and the first communication session; and

receiving a third message indicating the IP address is for the second communication session.

36. The non-transitory computer readable medium of claim 35 , wherein the instructions, when executed, cause:

sending, via the first communication session, a first data packet comprising the IP address; and

receiving, via the second communication session, a second data packet comprising the IP address.

37. The non-transitory computer readable medium of claim 35 , wherein the second message indicates that a first network slice for the first communication session is associated with a second network slice for the second communication session.

38. A system comprising:

a wireless device; and

a base station,

wherein the base station is configured to:

send, to the wireless device, a first message indicating an internet protocol (IP) address for a first communication session for uplink traffic associated with a wireless device application;

wherein the wireless device is configured to:

send a second message for establishment of a second communication session for downlink traffic associated with the wireless device application, wherein the second message indicates an association between the second communication session and the first communication session; and

wherein the base station is further configured to:

send a third message indicating the IP address is for the second communication session.

39. The system of claim 38 , wherein the wireless device is further configured to send, via the first communication session, a first data packet comprising the IP address; and

wherein the base station is further configured to send, via the second communication session, a second data packet comprising the IP address.

40. The system of claim 38 , wherein the second message comprises a session correlation indication indicating that the second communication session is associated with the first communication session.

41. A non-transitory computer readable medium storing instructions that, when executed, cause:

receiving, by a first device from a second device, a first establishment request message for a first packet data unit (PDU) session for uplink traffic associated with a wireless device application;

receiving, from the second device, a second establishment request message for a second PDU session for downlink traffic associated with the wireless device application;

determining, based on the first PDU session and the second PDU session being for a same wireless device application, an IP address for the first PDU session and the second PDU session; and

sending, to the second device, the IP address.

42. The non-transitory computer readable medium of claim 41 , wherein the first device is a session management function (SMF) device and the second device is an access and mobility management function (AMF) device.

43. The non-transitory computer readable medium of claim 41 , wherein the instructions, when executed, cause:

sending, to a first user plane function (UPF) device for the first PDU session, a first user plane rule comprising the IP address; and

sending, to a second UPF device for the second PDU session, a second user plane rule comprising the IP address.

44. A system comprising:

a first device; and

a second device,

wherein the second device is configured to:

send, to the first device, a first establishment request message for a first packet data unit (PDU) session for uplink traffic associated with a wireless device application; and

send, to the first device, a second establishment request message for a second PDU session for downlink traffic associated with the wireless device application, and

wherein the first device is configured to:

determine, based on the first PDU session and the second PDU session being for a same wireless device application, an IP address for the first PDU session and the second PDU session; and

send, to the second device, the IP address.

45. The system of claim 44 , wherein the first device is a session management function (SMF) device and the second device is an access and mobility management function (AMF) device.

46. The system of claim 44 , wherein the first device is further configured to:

send, to a first user plane function (UPF) device for the first PDU session, a first user plane rule comprising the IP address; and

send, to a second UPF device for the second PDU session, a second user plane rule comprising the IP address.