Configuration enhancements on access point name (APN) or data network name (DNN) selection in user equipment (UE)

1. A Mobile communication network, comprising:

a wireless transceiver, configured to perform wireless transmission and reception to and from a UE; and

a controller, coupled to the wireless transceiver, and configured to:

send a message to the UE via the wireless transceiver, wherein the message comprises information for indicating an order and a priority of reading Access Point Name (APN) parameters or Data Network Name (DNN) parameters from a plurality of input sources, and wherein each input source comprises an APN value or a DNN value; and

wherein the message comprises an IP Multimedia Subsystem (IMS) Management Object (MO), and the information is provided by an IMS configuration parameter in the IMS MO,

wherein the APN value or the DNN value is provided by a Universal Integrated Circuit Card (UICC) in the UE, by the mobile communication network, or by user via UE settings menu or any other method based on a value of the IMS configuration parameter in the IMS MO.

2. The Mobile communication network as claimed in claim 1 , wherein the message is sent via Open Mobile Alliance-Device Management (OMA-DM) signaling, HyperText Transfer Protocol (HTTP) signaling, Non-Access Stratum (NAS) signaling, or AS signaling.

3. The Mobile communication network as claimed in claim 1 , wherein the APN value or the DNN value is provided by the UICC in the UE, when the IMS configuration parameter is set to a first value.

4. The Mobile communication network as claimed in claim 3 , wherein the APN value or the DNN value is provided by an Elementary File (EF) for APN Control List (ACL) in the UICC.

5. The Mobile communication network as claimed in claim 1 , wherein the APN value or the DNN value is provided by the mobile communication network, when the IMS configuration parameter is set to a second value.

6. The Mobile communication network as claimed in claim 5 , wherein the APN value or the DNN value is provided by a Radio Resource Control (RRC) response message or a Short Message Service (SMS) message sent by the mobile communication network.

7. The Mobile communication network as claimed in claim 1 , wherein the APN value or the DNN value is associated with an extensible Markup Language (XML) Configuration Access Protocol (XCAP) APN or DNN, a Multimedia Messaging Service (MMS) APN or DNN, or an IMS APN or DNN.

8. A method, comprising:

sending a message from a mobile communication network to a User Equipment (UE), wherein the message comprises information for indicating an order and a priority of reading Access Point Name (APN) parameters or Data Network Name (DNN) parameters from a plurality of input sources, and wherein each input source comprises an APN value or a DNN value; and

receiving a request establishment of a Packet Data Network (PDN) connection or a Protocol Data Unit (PDU) session by using the APN value or the DNN value based on the information from the UE,

wherein the message comprises an IP Multimedia Subsystem (IMS) Management Object (MO), and the information is provided by an IMS configuration parameter in the IMS MO,

wherein the APN value or the DNN value is provided by a Universal Integrated Circuit Card (UICC) in the UE, by the mobile communication network, or by user via UE settings menu or any other method based on a value of the IMS configuration parameter in the IMS MO.

9. The method as claimed in claim 8 , wherein the message is sent via Open Mobile Alliance-Device Management (OMA-DM) signaling, HyperText Transfer Protocol (HTTP) signaling, Non-Access Stratum (NAS) signaling, or AS signaling.

10. The method as claimed in claim 8 , wherein the APN value or the DNN value is provided by the UICC in the UE, when the IMS configuration parameter is set to a first value.

11. The method as claimed in claim 10 , wherein the APN value or the DNN value is provided by an Elementary File (EF) for APN Control List (ACL) in the UICC.

12. The method as claimed in claim 8 , wherein the APN value or the DNN value is provided by the mobile communication network, when the IMS configuration parameter is set to a second value.

13. The method as claimed in claim 12 , wherein the APN value or the DNN value is provided by a Radio Resource Control (RRC) response message or a Short Message Service (SMS) message sent by the mobile communication network.

14. The method as claimed in claim 8 , wherein the APN value or the DNN value is associated with an extensible Markup Language (XML) Configuration Access Protocol (XCAP) APN or DNN, a Multimedia Messaging Service (MMS) APN or DNN, or an IMS APN or DNN.