Method, system and apparatus for expanding policy and charging control rules

The invention discloses an expansion policy and charging control rule method comprising that a policy control and charging rule function device (PCRF) generates the policy and charging control rule containing an expansion seven-layer analytical filtrating rule, and transmits the rule to a policy and charging execution function device (PCEF) to execute. The invention also discloses an expansion policy and charging control rule system comprising a PCRF and a PCEF; as well as a PCRF. The method of the invention realizes the transmission of the policy and charging control rule containing the seven-layer analytical filtrating rule from the PCRF to the PCEF, so that the user visiting position PCEF can be executed according to the policy and charging control rule containing the seven-layer analytical filtrating rule of the user ownership PCRF, the policy and charging control is accurately and fully implemented and the network appliance resource is saved at the same time of convenient centralization management.