Apparatuses and methods for avoiding location exposure

1. A mobile communication device for avoiding location exposure on insecure communications, comprising:

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

a controller, configured to determine whether a Radio Resource Control (RRC) security has been activated between the mobile communication device and the service network, and in response to the RRC security not having been activated, does not send a measurement report to the service network via the wireless transceiver to avoid exposing location information of the mobile communication device present in the measurement report,

wherein the controller is further configured to send the measurement report after the RRC security has been activated.

2. The mobile communication device of claim 1 , wherein, in response to the RRC security not having been activated, the controller is further configured to not perform measurements or system information acquisition according to the measurement configuration until the RRC security has been activated.

3. The mobile communication device of claim 1 , wherein, in response to the RRC security not having been activated, the controller is further configured to perform measurements or system information acquisition according to the measurement configuration, and not perform evaluations of the results of the measurements until the RRC security has been activated.

4. The mobile communication device of claim 1 , wherein, in response to the RRC security not having been activated, the controller is further configured to perform measurements or system information acquisition according to the measurement configuration, and perform evaluations of the results of the measurements.

5. The mobile communication device of claim 1 , wherein the location information of the mobile communication device comprises Global Positioning System (GPS) information of the mobile communication device or a measurement result of one or more cells.

6. A method for a mobile communication device to avoid location exposure on insecure communications, the method comprising:

determining whether a Radio Resource Control (RRC) security has been activated between the mobile communication device and a service network;

in response to the RRC security not having been activated, not sending a measurement report to the service network to avoid exposing location information of the mobile communication device present in the measurement report; and

sending the measurement report after the RRC security has been activated.

7. The method of claim 6 , further comprising:

in response to the RRC security not having been activated, not performing measurements or system information acquisition according to the measurement configuration until the RRC security has been activated.

8. The method of claim 6 , further comprising:

in response to the RRC security not having been activated, performing measurements or system information acquisition according to the measurement configuration, and not performing evaluations of the results of the measurements until the RRC security has been activated.

9. The method of claim 6 , further comprising:

in response to the RRC security not having been activated, performing measurements or system information acquisition according to the measurement configuration, and performing evaluations of the results of the measurements.

10. The method of claim 6 , wherein the location information of the mobile communication device comprises Global Positioning System (GPS) information of the mobile communication device or a measurement result of one or more cells.

11. A mobile communication device for avoiding location exposure on insecure communications, comprising:

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

a controller, configured to:

determine whether a Radio Resource Control (RRC) security has been activated between the mobile communication device and the service network after receiving one of (i) a User Equipment (UE) Information Request message, (ii) an RRC Connection Re-Establishment message, (iii) an RRC Connection Setup message, and (iv) an RRC Connection Reconfiguration message from the service network via the wireless transceiver;

in response to the RRC security not having been activated between the mobile communication device and the service network after receiving the UE Information Request message from the service network via the wireless transceiver, not send a UE Information Response message to the service network via the wireless transceiver to avoid exposing location information of the mobile communication device present in the UE Information Response message; and

in response to the RRC security not having been activated between the mobile communication device and the service network after receiving the one of the (ii) RRC Connection Re-Establishment message, the (iii) RRC Connection Setup message, and the (iv) RRC Connection Reconfiguration message from the service network via the wireless transceiver, send one of an RRC Connection Re-Establishment Complete message, an RRC Connection Setup Complete message, and an RRC Connection Reconfiguration Complete message to the service network via the wireless transceiver;

wherein none of the RRC Connection Re-Establishment Complete message, the RRC Connection Setup Complete message, and the RRC Connection Reconfiguration Complete message includes an availability indication of any of a Radio Link Failure (RLF) report, a connection-establish-failure report, a logged measurement report, and a mobility history report that each exposes location information of the mobile communication device.

12. A method for a mobile communication device to avoid location exposure on insecure communications, the method comprising:

determining whether a Radio Resource Control (RRC) security has been activated between the mobile communication device and a service network after receiving a UE Information Request message from the service network; and

in response to the RRC security not having been activated, not sending a UE Information Response message to the service network to avoid exposing location information of the mobile communication device present in the UE Information Response message.

13. A method for a mobile communication device to avoid location exposure on insecure communications, the method comprising:

determining whether a Radio Resource Control (RRC) security has been activated between the mobile communication device and the service network after receiving an RRC Connection Re-Establishment message, an RRC Connection Setup message, or an RRC Connection Reconfiguration message from the service network; and

in response to the RRC security not having been activated, sending an RRC Connection Re-Establishment Complete message, an RRC Connection Setup Complete message, or an RRC Connection Reconfiguration Complete message,

wherein none of the RRC Connection Re-Establishment Complete message, the RRC Connection Setup Complete message, and the RRC Connection Reconfiguration Complete message includes an availability indication of any of a Radio Link Failure (RLF) report, a connection-establish-failure report, a logged measurement report, and a mobility history report that each exposes location information of the mobile communication device.

14. The mobile communication device of claim 11 , wherein the UE Information Response message comprises location information of the mobile communications device.

15. The method of claim 12 , wherein the UE Information Response message comprises location information of the mobile communications device.