User device and method for transmitting signal

1. A user device in a wireless communication system supporting D2D communication, the user device comprising:

a first transmitter configured to transmit control information for D2D by using a physical control channel for D2D in a wireless frame configuration in which the physical control channel for D2D and a physical data channel for D2D are multiplexed in a frequency domain; and

a second transmitter configured to transmit data corresponding to the control information for D2D by using the physical data channel for D2D in the wireless frame configuration in which the physical control channel for D2D and the physical data channel for D2D are multiplexed in the frequency domain,

wherein a part of the control information for D2D is omitted by associating one-to-one a wireless resource for the physical control channel for D2D with a wireless resource for the physical data channel for D2D, and

wherein the part of control information for D2D which is omitted includes at least one of frequency hopping flag, resource block allocation, and hopping resource allocation.

2. The user device as claimed in claim 1 , wherein the second transmitter transmits the data in a predetermined subframe corresponding to a subframe by which the control information for D2D has been transmitted.

3. The user device as claimed in claim 1 , wherein the first transmitter transmits the physical control information for D2D by using a specific wireless resource used for transmitting high-priority control information for D2D among wireless resources allocated to the physical control channel for D2D.

4. The user device as claimed in claim 1 , wherein the control information for D2D includes information to specify a subframe section onto which the data is mapped in wireless resources allocated to the physical data channel for D2D.

5. The user device as claimed in claim 1 , wherein the second transmitter transmits the data by a subcarrier corresponding to a subcarrier by which the control information for D2D has been transmitted.

6. The user device as claimed in claim 1 , wherein the first transmitter determines whether to transmit the control information for D2D by using a first control information format for D2D or to transmit the control information for D2D by using a second control information format for D2D different from the first control information format for D2D, depending on a range of the wireless resources allocated to the physical control channel for D2D.

7. The user device as claimed in claim 2 , wherein the first transmitter transmits the physical control information for D2D by using a specific wireless resource used for transmitting high-priority control information for D2D among wireless resources allocated to the physical control channel for D2D.

8. The user device as claimed in claim 2 , wherein the control information for D2D includes information to specify a subframe section onto which the data is mapped in wireless resources allocated to the physical data channel for D2D.

9. The user device as claimed in claim 2 , wherein the second transmitter transmits the data by a subcarrier corresponding to a subcarrier by which the control information for D2D has been transmitted.

10. The user device as claimed in claim 2 , wherein the first transmitter determines whether to transmit the control information for D2D by using a first control information format for D2D or to transmit the control information for D2D by using a second control information format for D2D different from the first control information format for D2D, depending on a range of the wireless resources allocated to the physical control channel for D2D.

11. A user device in a wireless communication system supporting D2D communication, the user device comprising:

a first transmitter configured to transmit control information for D2D by using a physical control channel for D2D in a subframe in which the physical control channel for D2D and a physical data channel for D2D are time-multiplexed; and

a second transmitter configured to transmit data corresponding to the control information for D2D by using a physical data channel for D2D in a subframe different from the subframe,

wherein a part of the control information for D2D is omitted by associating one-to-one a wireless resource for the physical control channel for D2D with a wireless resource for the physical data channel for D2D, and

wherein the first transmitter transmits the control information for D2D by using a specific wireless resource used for transmitting high-priority control information for D2D among wireless resources allocated to the physical control channel for D2D.

12. The user device as claimed in claim 11 , wherein the first transmitter maps a reference signal onto a symbol at a center among a plurality of symbols that are consecutive and correspond to a physical control channel for D2D, and maps the control information for D2D onto a symbol other than the symbol onto which the reference signal is mapped among the symbols that are consecutive, to transmit the control information for D2D.

13. The user device as claimed in claim 11 , wherein the control information for D2D includes information to specify a subframe section onto which the data is mapped in wireless resources allocated to the physical data channel for D2D.

14. The user device as claimed in claim 12 , wherein the control information for D2D includes information to specify a subframe section onto which the data is mapped in wireless resources allocated to the physical data channel for D2D.

15. The user device as claimed in claim 11 , wherein the second transmitter transmits the data by a subcarrier corresponding to a subcarrier by which the control information for D2D has been transmitted.

16. The user device as claimed in claim 11 , wherein the first transmitter determines whether to transmit the control information for D2D by using a first control information format for D2D or to transmit the control information for D2D by using a second control information format for D2D different from the first control information format for D2D, depending on a range of the wireless resources allocated to the physical control channel for D2D.

17. A method for transmitting a signal executed by a user device in a wireless communication system supporting D2D communication, the method comprising:

transmitting control information for D2D by using a physical control channel for D2D in a wireless frame configuration in which the physical control channel for D2D and a physical data channel for D2D are multiplexed in a frequency domain; and

transmitting data corresponding to the control information for D2D by using the physical data channel for D2D in the wireless frame configuration in which the physical control channel for D2D and the physical data channel for D2D are multiplexed in the frequency domain,

wherein a part of the control information for D2D is omitted by associating one-to-one a wireless resource for the physical control channel for D2D with a wireless resource for the physical data channel for D2D, and

wherein the part of control information for D2D which is omitted includes at least one of frequency hopping flag, resource block allocation and hopping resource allocation.

18. A method for transmitting a signal executed by a user device in a wireless communication system supporting D2D communication, the method comprising:

transmitting control information for D2D by using a physical control channel for D2D in a subframe in which the physical control channel for D2D and a physical data channel for D2D are time-multiplexed;

transmitting data corresponding to the control information for D2D by using the physical data channel for D2D in the subframe or a physical data channel in a subframe different from the subframe; and

transmitting the control information for D2D by using a specific wireless resource used for transmitting high-priority control information for D2D among wireless resources allocated to the physical control channel for D2D,

wherein a part of the control information for D2D is omitted by associating one-to-one a wireless resource for the physical control channel for D2D with a wireless resource for the physical data channel for D2D.