METHOD, APPARATUS AND SYSTEM FOR ENABLING TO RELEASE PDN CONNECTIONS

摘要

A method for releasing Packet Data Network (PDN) connections includes: when the subscription data of the user in Home Subscriber Server (HSS) changes, the HSS notifies Mobility Management Entity (MME) to trigger releasing of the PDN connections (201); the MME requests Serving Gateway (GW) and PDN Gateway (PDN GW) to delete all bearers connected to the PDN according to the notice of the HSS (202); the MME then requests the UE (UE) to deactivate all bearers connected to the PDN (203). An apparatus and a system for releasing PDN connections are also provided in the present invention. The method, apparatus and system according to the present invention solve the problem that UE is unable to initiate the releasing process of the PDN connections when the subscription data of the users changes, in addition, solve the problem of rebuilding a Default Access Point Name (APN) connection when the Default APN of the UE is deleted at the same time. And the change for the current system is small, while the system performance is improved.