COMMUNICATION SYSTEM, MOBILE DEVICE, AND NETWORK APPARATUS

摘要

The present invention prevents a mobile device from transitioning back to a first wireless communication system when access restrictions in the first wireless communication system have caused the device to transition to a different wireless communication system. The communication system of the present invention includes a mobile device (300) capable of connecting to a LTE system and 3G system, and an RNC (210) that controls the transitioning of the mobile device (300) between the LTE system and 3G system. When the mobile device (300) sends the RNC (210) a request to connect to the 3G system instead of the LTE system, in response the establishment of restrictions restricting the communication of the mobile device (300) in the LTE system, transition information indicating a transition from the LTE system is included in the request to connect. If the RNC (210) receives transition information from the mobile device, the RNC (210) prevents the mobile device (300) from transitioning to the LTE system.