A system and method is provided for controlling a packet data service in a mobile communication network, in which, when a packet data service active terminal moves from an area of an old radio network controller to an area of a new radio network controller in either a suspended state or a dormant state,...http://www.google.com.hk/patents/US7035636?utm_source=gb-gplus-share專利 US7035636 - System and method for controlling packet data service in mobile communication network
