Charging policy obtaining method and apparatus

A charging policy obtaining apparatus, wherein the apparatus comprises:

• a processor;
• and
• a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the apparatus to:
• receive an authentication, authorization, and accounting request from a user equipment, wherein the authentication, authorization, and accounting request comprises a user name and a user equipment identifier;
• send a charging policy request to a first server, wherein the charging policy request comprises a first field and a second field, the first field is used to carry the user name, and the second field is used to carry the user equipment identifier;
• and
• receive a charging policy response sent by the first server, wherein the charging policy response comprises a charging policy corresponding to the user name and the user equipment identifier, and obtain the charging policy from the charging policy response.