Charging policy information for a home session management function

An apparatus comprising:

• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors, cause a home session management function (SMF) of a home public land mobile network (PLMN) to:
• receive, from a visited SMF of a visited PLMN from a visited SMF of a visited PLMN, a request for creation of a packet data unit (PDU) session of a wireless device, the request comprising first charging policy information corresponding to a first policy of the visited PLMN;
• and
• send, to a home policy control function (PCF), a charging policy request message comprising the first charging policy information;
• receive, from the home PCF, a charging policy response message comprising second charging policy information determined based on the first charging policy information;
• and
• send, to the visited SMF, the second charging policy information, wherein the second charging policy information comprises:
• a charging method for the PDU session;
• and
• a charging parameter indicating a charging level for the PDU session.

A system comprising:

• a visited session management function (SMF) of a visited public land mobile network (PLMN);
• and
• a home SMF of a home PLMN comprising:
• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors, cause the home SMF to:
• receive, from a visited SMF of a visited PLMN from a visited SMF of a visited PLMN, a request for creation of a packet data unit (PDU) session of a wireless device, the request comprising first charging policy information corresponding to a first policy of the visited PLMN;
• and
• send, to a home policy control function (PCF), a charging policy request message comprising the first charging policy information;
• receive, from the home PCF, a charging policy response message comprising second charging policy information determined based on the first charging policy information;
• and
• send, to the visited SMF, the second charging policy information, wherein the second charging policy information comprises:
• a charging method for the PDU session;
• and
• a charging parameter indicating a charging level for the PDU session.