Patent ID: 8681672

Claim:
A system for transitioning a radio resource control (RRC) state of a user equipment to an idle state, the system comprising: the user equipment configured to measure a volume of packet data traffic transmitted by or received by the user equipment when the RRC state of the user equipment is changed to a CELL_FACH state, and transmit a Signaling Connection Release indication (SCRI) message when the packet data traffic has not been generated during a predetermined time; and a radio network controller configured to transmit an RRC Connection Release message to the user equipment when the radio network controller has received the SCRI message from the user equipment, wherein: the SCRI message is configured to release a Signaling Connection while maintaining a Packet Data Protocol (PDP) connection, and the user equipment is configured to transition the RRC state of the user equipment to the idle state when the RRC Connection Release message is received from the radio network controller.