Charging method and device

A roaming charging method applied to a roaming charging system of a visited network or a roaming charging system of a home network, the method comprising:

• receiving a charging resource creation request sent by a charging trigger device of the visited network, the charging resource creation request requests creation of a charging resource for a data connection session of a roaming user;
• returning a charging resource creation response message to the charging trigger device of the visited network, the charging resource creation response message carries an identifier of the created charging resource;
• receiving a first charging request sent by the charging trigger device of the visited network to the roaming charging system of the visited network, the first charging request is used to perform roaming charging for the data connection session, or receiving a second charging request sent by the charging trigger device of the visited network to the roaming charging system of the home network, the second charging request is used to perform online charging or converged charging for the data connection session;
• and
• charging the roaming user based on the first charging request or the second charging request.

An apparatus, comprising:

• a memory storing instructions;
• and
• at least one processor in communication with the memory, the at least one processor configured, upon execution of the instructions, to perform the following steps:
• receiving a creation request of a data connection session and determining that a user of the data connection session is a roaming user;
• sending a first charging resource creation request to a roaming charging system of the visited network of the roaming user, the first charging resource creation request requests creation of a first charging resource for the data connection session;
• receiving a first charging resource creation response message returned by the roaming charging system of the visited network, the first charging resource creation response message carries an identifier of the first charging resource;
• sending a second charging resource creation request to a roaming charging system of a home network of the roaming user, the second charging resource creation request requests creation of a second charging resource for the data connection session;
• receiving a second charging resource creation response message returned by the roaming charging system of the home network, the second charging resource creation response carries an identifier of the second charging resource;
• sending a first charging request to the roaming charging system of the visited network, the first charging request comprises first charging information and the identifier of the first charging resource, and the first charging information is used to perform roaming charging for the data connection session;
• and
• sending a second charging request to the roaming charging system of the home network, the second charging request comprises second charging information and the identifier of the first charging resource, and the second charging information is used to perform online charging or converged charging for the data connection session.

An apparatus, comprising:

• a memory storing instructions;
• and
• at least one processor in communication with the memory, the at least one processor configured, upon execution of the instructions, to perform the following steps:
• receiving a charging resource creation request sent by a charging trigger device of the visited network, the charging resource creation request requests creation of a charging resource for a data connection session of a roaming user;
• returning a charging resource creation response message to the charging trigger device of the visited network, the charging resource creation response message carries an identifier of the created charging resource;
• receiving a first charging request sent by the charging trigger device of the visited network to the roaming charging system of the visited network, the first charging request is used to perform roaming charging for the data connection session, or receiving a second charging request sent by the charging trigger device of the visited network to the roaming charging system of the home network, the second charging request is used to perform online charging or converged charging for the data connection session;
• and
• charging the roaming user based on the first charging request or the second charging request.