Data business charging method, system and associated device

The invention discloses a data business charging method, a system and an associated device. The data business charging method comprises steps of detecting the practical bandwidth of the user usage data business according to the indication information after receiving charging respond information carrying bandwidth detection indication information by the PCEF device, and transmitting the charging request information carrying the practical bandwidth to the OCS or the PCRF device in order to provide convenience to the PSC or the PCRF device to perform charging on the user according to the user practical bandwidth. Compared with the prior art, the PCEF device can obtain the practical bandwidth of the user, wherein the practical bandwidth can better reflect the network condition of the user compared with the authorized bandwidth, and can improve the charging accuracy on the user according to the bandwidth. 本发明公开了种数据业务的计费方法、系统和相关设备，在本发明实施例提供的数据业务的计费方法中，PCEF设备在接收到携带带宽检测指示信息的计费响应消息后，根据该指示信息检测用户使用数据业务的实际带宽，并向OCS或PCRF设备