Method and device for establishing gs association

Abstract

An embodiment of the present invention provides a method for establishing a Gs association, where the method includes: when a serving GPRS support node SGSN determines that an SGs association of a user equipment UE in an idle mode signaling reduction function ISR activated state is released, sending, by the SGSN, a location update request to a mobile switch center/visitor location register MSC/VLR, so that the SGSN and the MSC/VLR establish a Gs association for the UE. An embodiment of the present invention further provides an SGSN. In the embodiments of the present invention, when a UE is in an ISR activated state, and after an SGs association is released, a Gs association can be established in time, and therefore, the UE is not implicitly detached by an MSC/VLR, and a mobile terminated service of the UE is not affected, thereby enhancing service experience of a user.

Dependencies are inferred from the claim text.