Charging control for non-public network
A session management function (SMF) comprises one or more processors and memory storing instructions. When executed by the one or more processors, the instructions cause the SMF to send, to a policy control function (PCF), a policy request message. The policy request message comprises a non-public network (NPN) identifier of an NPN through which a wireless device accesses a public land mobile network (PLMN) and a PLMN identifier of the PLMN. When executed by the one or more processors, the instructions cause the SMF to receive, from the PCF, a policy response message comprising a charging control policy.
1. A session management function (SMF) comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the SMF to:
send, to a policy control function (PCF), a policy request message comprising:
a non-public network (NPN) identifier of an NPN through which a wireless device accesses a public land mobile network (PLMN); and
a PLMN identifier of the PLMN; and
receive, from the PCF, a policy response message comprising a charging control policy.
2. The SMF of claim 1 , wherein the instructions further cause the SMF to receive, from an access and mobility management function (AMF), a message comprising one or more of the NPN identifier and the PLMN identifier.
3. The SMF of claim 2 , wherein the message comprises at least one of:
a data network name (DNN);
a single network slice selection assistance information (S-NSSAI); and
a packet data unit (PDU) session identifier.
4. The SMF of claim 2 , wherein the sending the policy request message is based on the receiving the message from the AMF.
5. The SMF of claim 1 , wherein the instructions further cause the SMF to send, to a charging function, a charging data request message based on the policy response message.
6. The SMF of claim 5 , wherein the charging data request message comprises the PLMN identifier.
7. The SMF of claim 1 , wherein the policy request message further comprises at least one of:
a wireless device identifier of the wireless device;
a data network name (DNN);
a single network slice selection assistance information; or
a packet data unit session identifier.
8. The SMF of claim 1 , wherein the policy response message comprises at least one of:
a charging control rule;
the NPN identifier;
a single network slice selection assistance information (S-NSSAI); and
a packet data unit (PDU) session identifier.
9. The SMF of claim 1 , wherein the instructions further cause the SMF to determine one or more user plane rules for the NPN based on the charging control policy.
10. The SMF of claim 9 , further comprising sending the one or more user plane rules for the NPN to a user plane function (UPF).
11. A policy control function (PCF) comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the PCF to:
receive, from a session management function (SMF), a policy request message comprising:
a non-public network (NPN) identifier of an NPN through which a wireless device accesses a public land mobile network (PLMN); and
a PLMN identifier of the PLMN; and
send, to the SMF, a policy response message comprising a charging control policy.
12. The PCF of claim 11 , wherein the instructions further cause the PCF to determine the charging control policy.
13. The PCF of claim 12 , wherein the determining the charging control policy is based on the NPN identifier.
14. The PCF of claim 12 , wherein the determining the charging control policy is based on the PLMN identifier.
15. The PCF of claim 12 , wherein the instructions further cause the PCF to send, to a unified data repository (UDR), a subscription request message comprising the PLMN identifier and the NPN identifier.
16. The PCF of claim 15 , wherein the instructions further cause the PCF to receive, from the UDR, charging control information for the NPN.
17. The PCF of claim 16 , wherein the instructions further cause the PCF to determine a charging control rule for the NPN based on the charging control information for the NPN received from the UDR.
18. The PCF of claim 16 , wherein the determining the charging control policy is based on the charging control information for the NPN received from the UDR.
19. The PCF of claim 11 , wherein the policy request message further comprises at least one of:
a wireless device identifier of the wireless device;
a data network name;
a single network slice selection assistance information; or
a packet data unit session identifier.
20. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause the one or more processors to:
send, to a policy control function (PCF), a policy request message comprising:
a non-public network (NPN) identifier of an NPN through which a wireless device accesses a public land mobile network (PLMN); and
a PLMN identifier of the PLMN; and
receive, from the PCF, a policy response message comprising a charging control policy.