Patent ID: 8422452

Claim:
A communication method in Selected IP Traffic Offload (SIPTO) architecture, the method comprising: a Mobility Management Entity (MME) sending a page signal to a user equipment, when deciding that it is necessary to re-select a gateway apparatus, in a case where the user equipment is in an EPS Connection Management (ECM)-IDLE state; the user equipment, on reception of the page signal, transmitting a service request to the MME; the MME, on reception of the service request, sending a deactivate bearer request to a base station; the base station transmitting an RRC connection reconfiguration to the user equipment; the user equipment transmitting a notification of completion of the RRC connection reconfiguration to the base station; the base station transmitting a deactivate bearer response to the MME; and the user equipment initiating a UE requested PDN connectivity procedure, the gateway apparatus being re-selected in the PDN connectivity procedure.