Abstract: A mobile communication device with a wireless module and a controller module is provided. The wireless module performs wireless transceiving to and from a service network. The controller module transmits an attachment request message without integrity protection to the service network via the wireless module, and receives an attachment response message without integrity protection from the service network via the wireless module. Also, the controller module directly applies a first value of a periodic Routing Area (RA) update timer included in the attachment response message.

Abstract: A mobile communications device with a wireless module and a controller module is provided. The wireless module selectively performs wireless transceiving to and from a first service network or a second service network. The controller module receives, via the wireless module, a handover request for a handover from the first service network to the second service network, and determines whether a Non-Access Stratum (NAS) message flow with a counted sequence number is active on a Circuit-Switched (CS) domain of the first service network in response to the handover request. Also, the controller module keeps the counted sequence number unchanged in response to the NAS message flow being active on the CS domain of the first service network. Specifically, the handover request is transmitted by the first service network in response to a Single Radio Voice Call Continuity (SRVCC) procedure between the first service network and the second service network.

Abstract: A mobile communications device with a wireless module and a controller module is provided. The wireless module performs wireless transmissions and receptions to and from a cellular station. The controller module receives a detachment request message comprising a detachment cause from the cellular station via the wireless module, and determines whether the detachment cause indicates unauthorized membership of a closed subscriber group (CSG) supported by the cellular station. Also, the controller module determines whether the cellular station is a non-CSG cell in response to the detachment cause indicating unauthorized membership of the CSG supported by the cellular station, and keeps an allowed CSG list unmodified in response to the cellular station being a non-CSG cell.

Abstract: A mobile communications device with a wireless module and a controller module is provided. The wireless module performs wireless transceiving to and from a cellular station of a service network, and the cellular station is associated with a Closed Subscriber Group (CSG) identification (ID) and configured to operate in a hybrid access mode. The controller module transmits a Circuit Switched (CS) or Packet Switched (PS) domain request message to the cellular station via the wireless module, and receives a rejection message corresponding to the CS or PS domain request message from the cellular station via the wireless module. Also, the controller module determines whether the rejection message indicates unauthorized membership of the CSG ID, and removes the CSG ID from an allowed CSG list in response to the CSG ID being in the allowed CSG list and the rejection message indicating unauthorized membership of the CSG ID.

Abstract: A method of handling a proximity indication for a mobile device in a wireless communication system is disclosed. The method comprises the steps of entering a proximity of a CSG (closed subscriber group) cell, reporting an entering proximity indication to a network and starting a specified timer; and sending a leaving proximity indication whenever the mobile device leaves the proximity of the CSG cell even the specified timer is running.

Abstract: A mobile communications device with a wireless module and a controller module is provided. The wireless module performs wireless transceiving to and from a cellular station of a service network, and the cellular station is associated with a Closed Subscriber Group (CSG) identification (ID) and configured to operate in a hybrid access mode. The controller module transmits a request message for Circuit Switched (CS) or Packet Switched (PS) domain to the cellular station via the wireless module, and receives a response message corresponding to the request message from the cellular station via the wireless module. Also, the controller module determines whether the response message indicates authorized membership of the CSG ID, and adds the CSG ID in an allowed CSG list in response to the CSG ID not being in the allowed CSG list and the response message indicating authorized membership of the CSG ID.

Abstract: A method for reducing CSG identity comparison for a mobile device in a wireless communication system is disclosed. The method includes the steps of including RAT information in an Allowed CSG list and an Operator CSG List, wherein the Allowed CSG list and the Operator CSG List are stored in an elementary file of the mobile device and the RAT information indicates a plurality of RATs associated with a plurality of CSG identities listed in the allowed CSG list; maintaining a plurality of sub-allowed CSG lists in an access stratum (AS) layer of the mobile device according to the plurality of RATs, wherein the number of the sub-allowed CSG lists corresponds to the number of the RATs; and comparing a CSG identity associated with a first RAT with the CSG identities listed in a first sub allowed CSG list corresponding to the first RAT.