DATA SERVICE CHARGING METHOD AND SYSTEM, AND RELEVANT DEVICE

Disclosed are a data service charging method and system, and a relevant device. In the data service charging method provided in the embodiments of the present invention, after receiving a charging response message carrying bandwidth detection indication information, a PCEF device detects an actual bandwidth of a data service used by a user according to the indication information, and sends a charging request message carrying the actual bandwidth to an OCS or a PCRF device, so that the OCS or PCRF device performs charging on the user according to the actual bandwidth of the user. Compared with the prior art, the embodiments of the present invention can acquire the actual bandwidth of a user via a PCEF device, and the actual bandwidth can better reflect the network condition of the user compared to an authorized bandwidth, thereby further improving the charging precision for the user according to the bandwidth. L'invention concerne un procédé et un système de facturation de service de données, et un dispositif