MOBILE COMMUNICATION DEVICES AND METHODS FOR HANDLING A COMBINED ATTACH OR ROUTING AREA UPDATE PROCEDURE SUCCESSFUL FOR PS DOMAIN SERVICES ONLY

摘要

A communication device is provided with a wireless module and a controller module. The wireless module performs wireless transceiving to and from a service network. The controller module performs a combined attach or RAU procedure by transmitting an attach or RAU request message to the service network via the wireless module, and receives an attach or RAU accept message for the combined attach or RAU procedure, which includes a reject cause for CS domain services, from the service network via the wireless module. Also, the controller module prohibits retrying the combined attach or RAU procedure to obtain the CS domain services, in response to the attach or RAU accept message including the reject cause for the CS domain services.