Method and apparatus for limiting transmission of in-device coexistence indication message in wireless communication system

1. A method of communicating, by a user equipment (UE), with a base station in a mobile communication system, the method comprising:

receiving, by the UE from the base station, a configuration message including an in-device coexistence (IDC) indication; and

transmitting, by the UE to the base station, an IDC indication message if the UE determines that the received IDC indication contains specific information,

wherein the specific information is indicated by an activation bit,

wherein the activation bit represents permission for the UE to transmit the IDC indication message,

wherein the IDC indication message includes time division multiplexing (TDM) assistant information, and frequency division multiplexing (FDM) assistant information,

wherein the TDM assistant information includes bitmap solution information, and

wherein the FDM assistant information includes information on unusable frequencies, and information on whether a long-term evolution (LTE) module in the UE is interfered by other coexisting technology modules in the UE or other coexisting technology modules in the UE are interfered by the LTE module in the UE.

2. The method of claim 1 , wherein the configuration message is received via dedicated signaling.

3. The method of claim 1 , wherein the configuration message includes an FDM/TDM preference configuration which indicates an availability for an FDM/TDM solution in a serving network.

4. The method of claim 3 , wherein if the FDM solution is available, the IDC indication message further includes candidate target cell information.

5. The method of claim 3 , wherein if the TDM solution is available, the IDC indication message further includes a desired pattern for discontinuous reception (DRX).

6. The method of claim 1 , wherein the IDC indication message includes a proximity-like indication which informs the base station of turn-on of coexisting technology within the UE.

7. The method of claim 6 , wherein the proximity-like indication includes the preference of the UE between a frequency division multiplexing (FDM) solution and a TDM solution depending on a situation of the UE.

8. The method of claim 6 , wherein the proximity-like indication includes potential unusable frequencies, a potential unusable frequency being a frequency that interference from the coexisting technology within the UE is expected.

9. The method of claim 6 , the proximity-like indication is included in the IDC indication message if the coexisting technology within the UE is switched on, or if an application of the coexisting technology comes into being active.

10. The method of claim 1 , further comprising:

not transmitting the IDC indication message if the UE determines that the received IDC indication does not contain the specific information.

11. A method of communicating, by a base station, with a user equipment (UE) in a mobile communication system, the method comprising:

transmitting, by the base station to the UE, a configuration message including an in-device coexistence (IDC) indication; and

receiving, by the base station from the UE, an IDC indication message if the UE determines that the transmitted IDC indication contains specific information,

wherein the specific information is indicated by an activation bit,

wherein the activation bit represents permission for the UE to transmit the IDC indication message,

wherein the IDC indication message includes time division multiplexing (TDM) assistant information, and frequency division multiplexing (FDM) assistant information,

wherein the TDM assistant information includes bitmap solution information, and

wherein the FDM assistant information includes information on unusable frequencies, and information on whether a long-term evolution (LTE) module in the UE is interfered by other coexisting technology modules in the UE or other coexisting technology modules in the UE are interfered by the LTE module in the UE.

12. The method of claim 11 , wherein the configuration message is transmitted via dedicated signaling.

13. The method of claim 11 , wherein the configuration message includes an FDM/TDM preference configuration which indicates an availability for an FDM/TDM solution in a serving network.

14. The method of claim 13 , wherein if the FDM solution is available, the IDC indication message further includes candidate target cell information.

15. The method of claim 13 , wherein if the TDM solution is available, the IDC indication message further includes a desired pattern for discontinuous reception (DRX).

16. The method of claim 11 , wherein the IDC indication message includes a proximity-like indication which informs the base station of turn-on of coexisting technology within the UE.

17. The method of claim 16 , wherein the proximity-like indication includes the preference of the UE between a frequency division multiplexing (FDM) solution and a TDM solution depending on a situation of the UE.

18. The method of claim 16 , wherein the proximity-like indication includes potential unusable frequencies, a potential unusable frequency being a frequency that interference from the coexisting technology within the UE is expected.

19. The method of claim 16 , the proximity-like indication is included in the IDC indication message if the coexisting technology within the UE is switched on, or if an application of the coexisting technology comes into being active.

20. The method of claim 11 , further comprising:

not receiving the IDC indication message if the UE determines that the received IDC indication does not contain the specific information.