Method for Charging Inter-PLMN Roaming Data Service Online, and Device

A packet data network gateway, comprising:

• a processor;
• and
• a computer-readable storage medium coupled to the processor and configured to store programming instructions for execution by the processor, the programming instructions instructing the processor to:
• send, to a home online charging function of a roaming subscriber that corresponds to an address of the home online charging function, a first request message used to establish an online charging session, the address of the home online charging function being from a policy and charging rules function;
• receive an online charging session response message from the home online charging function;
• establish the online charging session between the packet data network gateway and the home online charging function for the roaming subscriber;
• form a first charging information parameter list applicable to the roaming subscriber;
• send, to the home online charging function, a first quota request message carrying a rating group;
• receive a roaming data service quota from the home online charging function according to the rating group;
• and
• send first charging information to the home online charging function according to the first charging information parameter list, the first charging information comprising a usage of the roaming data service quota.

A packet data network gateway, comprising:

• a processor;
• and
• a computer-readable storage medium coupled to the processor and configured to store programming instructions for execution by the processor, the programming instructions instructing the processor to:
• send, to a home online charging function of a roaming subscriber that corresponds to an address of the home online charging function, a first request message used to establish an online charging session, the address of the home online charging function being from a charging characteristic;
• receive an online charging session response message from the home online charging function;
• establish the online charging session between the packet data network gateway and the home online charging function for the roaming subscriber;
• form a first charging information parameter list applicable to the roaming subscriber;
• send, to the home online charging function, a first quota request message carrying a rating group;
• receive a roaming data service quota from the home online charging function according to the rating group;
• and
• send first charging information to the home online charging function according to the first charging information parameter list, the first charging information comprising a usage of the roaming data service quota.

A system for charging an inter-Public Land Mobile Network (PLMN) roaming data service online, comprising:

• a home online charging function;
• and
• a visited-place packet data network gateway configured to:
• send a first request message to the home online charging function of a roaming subscriber that corresponds to an address of the home online charging function, the first request message establishing an online charging session, the address of the home online charging function being from a policy and charging rules function;
• receive an online charging session response message from the home online charging function;
• establish the online charging session between the visited-place packet data network gateway and the home online charging function for the roaming subscriber;
• send a first quota request message to the home online charging function, the first quota request message carrying a rating group;
• receive a roaming data service quota from the home online charging function according to the rating group;
• and
• send first charging information to the home online charging function according to a first charging information parameter list, the first charging information comprising a usage of the roaming data service quota;
• the home online charging function being configured to receive the first request message, send the online charging session response message, receive the first quota request message that carries the rating group, send the roaming data service quota according to the rating group, and receive the first charging information.

A system for charging an inter-Public Land Mobile Network (PLMN) roaming data service online, comprising:

• a home online charging function;
• and
• a visited-place packet data network gateway being configured to:
• send a first request message to the home online charging function of a roaming subscriber that corresponds to an address of the home online charging function, the first request message establishing an online charging session, the address of the home online charging function being from a charging characteristic;
• receive an online charging session response message from the home online charging function;
• establish the online charging session between the visited-place packet data network gateway and the home online charging function for the roaming subscriber;
• send to the home online charging function, a first quota request message that carries a rating group;
• receive a roaming data service quota from the home online charging function according to the rating group;
• and
• send first charging information to the home online charging function according to a first charging information parameter list, the first charging information comprising a usage of the roaming data service quota,
• the home online charging function being configured to receive the first request message, send the online charging session response message, receive the first quota request message that carries the rating group, send the roaming data service quota according to the rating group, and receive the first charging information.