Method and apparatus for performing roaming traffic charging for a UE

An objective of the present invention is to provide a method and apparatus for performing roaming traffic charging for a user equipment; receiving a roaming traffic charging request about the user equipment, wherein the user equipment roams to a visited network, the roaming traffic charging request includes roaming traffic-related information of the user equipment; if the roaming traffic-related information satisfies a first charging condition, forwarding the roaming traffic charging request to an OCS of an alternative roaming provider corresponding to the user equipment so as to perform the roaming traffic charging for the user equipment, wherein the alternative roaming provider corresponds to a home network of the user equipment. Compared with the prior art, the present invention provides an innovative online charging solution to support an alternative roaming provider, which is based on the new EU roaming regulations and independent from H-MNO, for roaming tariff; enables operators to support new EU roaming regulations and fulfill most of EU Commission's expectations without causing a great impact to the core network.