Charging aggregation control for network slices
A policy control function (PCF) receives from a session management function (SMF) a first message requesting policy establishment of a first packet data unit (PDU) session for a wireless device. The first message comprises a first single-network slice selection assistance information (S-NSSAI) and a first network slice instance identifier (NSI ID) for the first S-NSSAI. The PCF also receives a second message comprising an identifier of a communication service provider (CSP ID). The PCF maps the first NSI ID to the CSP ID and further selects a charging function (CHF) for the first PDU session per CSP based on the mapping.
1. A method comprising:
receiving, by a policy control function (PCF) from a session management function (SMF), a first message requesting policy establishment for a first packet data unit (PDU) session of a wireless device, the first message comprising:
a first single-network slice selection assistance information (S-NSSAI); and
a first network slice instance identifier (NSI ID) for the first S-NSSAI;
receiving, by the PCF, a second message comprising an identifier of a communication service provider (CSP ID);
mapping, by the PCF, the first NSI ID to the CSP ID; and
selecting, by the PCF, a charging function (CHF) for the first PDU session per CSP based on the mapping.
2. The method of claim 1 , wherein the second message is received by the PCF from a unified data repository (UDR).
3. The method of claim 1 , wherein the second message is received by the PCF from an application function (AF).
4. The method of claim 1 , wherein the second message further comprises:
a charging aggregation indication for the CSP;
a list of S-NSSAIs for the CSP; and
a list of network slice instance identifiers for the list of S-NSSAIs.
5. The method of claim 4 , further comprising determining, by the PCF, charging aggregation control per CSP for the first PDU session based on:
the mapping of the first NSI ID to the CSP ID;
the CSP ID; and
the charging aggregation indication for the CSP.
6. The method of claim 4 , further comprising:
receiving, by the PCF from the SMF, a third message requesting policy establishment for a second PDU session, the third message comprising:
a second S-NSSAI; and
a second NSI ID for the second S-NSSAI; and
selecting, by the PCF, the selected CHF for the second PDU session per CSP.
7. The method of claim 6 , further comprising:
receiving, by the PCF from an application function (AF), a fourth message comprising the CSP ID;
mapping, by the PCF, the second NSI ID to the CSP ID; and
determining, by the PCF, charging aggregation control for the CSP for the second PDU session based on:
the mapping of the second NSI ID to the CSP ID;
the CSP ID; and
the charging aggregation indication for the CSP.
8. The method of claim 7 , further comprising sending, by the PCF to the SMF, a fifth message, wherein the fifth message comprises:
an address of the CHF;
the CSP ID, and
the charging aggregation indication for the CSP.
9. 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 perform operations comprising:
receiving, by the PCF from a session management function (SMF), a first message requesting policy establishment for a first packet data unit (PDU) session of a wireless device, the first message comprising:
a first single-network slice selection assistance information (S-NSSAI); and
a first network slice instance identifier (NSI ID) for the first S-NSSAI;
receiving, by the PCF, a second message comprising an identifier of a communication service provider (CSP ID);
mapping, by the PCF, the first NSI ID to the CSP ID; and
selecting, by the PCF, a charging function (CHF) for the first PDU session per CSP based on the mapping.
10. The policy control function of claim 9 , wherein the second message is received by the PCF from a unified data repository (UDR).
11. The policy control function of claim 9 , wherein the second message is received by the PCF from at an application function (AF).
12. The policy control function of claim 9 , wherein the second message further comprises:
a charging aggregation indication for the CSP;
a list of S-NSSAIs for the CSP; and
a list of network slice instance identifiers for the list of S-NSSAIs.
13. The policy control function of claim 12 , further comprising determining, by the PCF, charging aggregation control per CSP for the first PDU session based on:
the mapping of the first NSI ID to the CSP ID;
the CSP ID; and
the charging aggregation indication for the CSP.
14. The policy control function of claim 12 , further comprising:
receiving, by the PCF from the SMF, a third message requesting policy establishment for a second PDU session, the third message comprising:
a second S-NSSAI; and
a second NSI ID for the second S-NSSAI; and
selecting, by the PCF, the selected CHF for the second PDU session per CSP.
15. The policy control function of claim 14 , further comprising:
receiving, by the PCF from an Application Function (AF), a fourth message comprising the CSP ID;
mapping, by the PCF, the second NSI ID to the CSP ID; and
determining, by the PCF, charging aggregation control for the CSP for the second PDU session based on:
the mapping of the second NSI ID to the CSP ID;
the CSP ID; and
the charging aggregation indication for the CSP.
16. The policy control function of claim 15 , further comprising sending, by the PCF to the SMF, a fifth message, wherein the fifth message comprises:
an address of the CHF;
the CSP ID; and
the charging aggregation indication for the CSP.
17. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a policy control function (PCF), cause the PCF to:
receive from a session management function (SMF), a first message requesting policy establishment for a first packet data unit (PDU) session of a wireless device, the first message comprising:
a first single-network slice selection assistance information (S-NSSAI); and
a first network slice instance identifier (NSI ID) for the first S-NSSAI;
receive a second message comprising an identifier of a communication service provider (CSP ID);
map the first NSI ID to the CSP ID; and
select a charging function (CHF) for the first PDU session per CSP based on the mapping.
18. The non-transitory computer-readable medium of claim 17 , wherein the second message is received by the PCF from:
a unified data repository (UDR); or
an application function (AF); and the second message further comprises:
a charging aggregation indication for the CSP;
a list of S-NSSAIs for the CSP; and
a list of network slice instance identifiers for the list of S-NSSAIs.
19. The non-transitory computer-readable medium of claim 18 , wherein the instructions further cause the PCF to determine charging aggregation control per CSP for the first PDU session based on:
the mapping of the first NSI ID to the CSP ID;
the CSP ID; and
the charging aggregation indication for the CSP.
20. The non-transitory computer-readable medium of claim 19 , wherein the instructions further cause the PCF to:
receive, from the SMF, a third message requesting policy establishment for a second PDU session, the third message comprising:
a second S-NSSAI; and
a second NSI ID for the second S-NSSAI; and
select the selected CHF for the second PDU session per CSP;
receive, from an application function (AF), a fourth message comprising the CSP ID;
map the second NSI ID to the CSP ID; and
determine charging aggregation control for the CSP for the second PDU session based on:
the mapping of the second NSI ID to the CSP ID;
the CSP ID; and
the charging aggregation indication for the CSP.