Method, Device, and System for Processing Closed Subscriber Group Subscription Data Request

A method for requesting closed subscriber group (CSG) subscription data, the method comprising:

• when a mobility management network element (MMNE) does not have CSG subscription data of a user equipment (UE), determining, by the MMNE, that the MMNE does not have a registration success indication of a CSG subscriber server (CSS) of the UE, wherein the registration success indication is used for indicating that the CSS stores a first identifier of the MMNE;
• and
• sending, by the MMNE, a request to the CSS, wherein the request comprising the first identifier and a second identifier of the UE is used for requesting the CSG subscription data of the UE.

A closed subscriber group (CSG) subscriber server (CSS), comprising:

• a receiving unit, configured to receive a request sent by a mobility management network element (MMNE), wherein the request comprises a first identifier of the MMNE and a second identifier of a user equipment (UE) is used for requesting CSG subscription data of the UE;
• and
• a storage unit, configured to, when the CSG subscription data of the UE does not exist, store the first identifier and the second identifier.

A mobility management network element (MMNE), comprising:

• a first judging unit, configured to, when the MMNE does not have closed subscriber group (CSG) subscription data of a user equipment (UE), determine whether the MMNE has a registration success indication of a CSG subscriber server (CSS) of the UE, wherein the registration success indication is used for indicating that the CSS stores a first identifier of the MMNE;
• and
• a sending unit, configured to, when the first judging unit determines that the MMNE does not have the registration success indication, send a request to the CSS, wherein the request comprising the first identifier and a second identifier is used for requesting CSG subscription data of the UE.