Apparatuses, systems, and methods for closed subscriber group (csg) membership synchronization

A method for Closed Subscriber Group (CSG) membership synchronization in a mobile communications device, comprising:

• transmitting a Circuit Switched (CS) or Packet Switched (PS) domain request message to a cellular station of a service network, wherein the cellular station is associated with a CSG identification (CSG ID) and configured to operate in a hybrid access mode;
• receiving a rejection message corresponding to the CS or PS domain request message from the cellular station;
• determining whether the rejection message indicates unauthorized membership of the CSG ID;
• and
• removing 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.

A method for Closed Subscriber Group (CSG) membership synchronization by a service network, comprising:

• configuring a cellular station associated with a CSG identification (CSG ID) to operate in a hybrid access mode for performing wireless transceiving to and from a mobile communication device;
• receiving a Circuit Switched (CS) or Packet Switched (PS) domain request message from the mobile communication device via the cellular station;
• and
• determining whether the mobile communication device has authorized membership of the CSG ID in response to the CS or PS domain request message;
• and
• transmitting a rejection message with a rejection to the mobile communication device via the cellular station in response to the mobile communication device not having authorized membership of the CSG ID.