| 摘要 |
A network access method, system and device are used for solving the problem that a policy and charging enforcement function (PCEF) in the prior art is incapable of reliably obtaining user information in time, therefore failing to effectively control and manage network flow of a user. The method comprises: a PCEF receiving, through a Gx interface between the PCEF and a network access device, a session setup request message sent by the network access device, the session setup request message being sent after the network access device receives a network access request message sent by a user; the PCEF acquiring user information by parsing the session setup request message, and storing the user information; requesting from a policy and charging rule function (PCRF) a policy corresponding to the user according to the user information, and saving the policy; and the PCEF managing and controlling the flow of the user according to the user information and the policy. The solution improves the reliability and timeliness of the user information obtained by the PCEF. |
