D2D operation method of terminal in wireless communication system, and terminal using method

1. A device to device (D2D) operation method in a wireless communication system, the method performed by a first user equipment (UE) and comprising:

receiving first information, by the first UE, from a second UE, the second UE being a target of the D2D operation; and

performing the D2D operation based on the first information,

wherein the first information notifies the first UE of a specific resource through which the second UE is incapable of receiving a signal transmitted from the first UE,

wherein the first UE performs the D2D operation within a number of resources excluding the specific resource, and

wherein, within a pre-configured resource, the D2D operation is performed at a higher priority level than an uplink communication being performed by the first UE.

2. The method of claim 1 , wherein the first UE has a greater bandwidth capability than the second UE.

3. The method of claim 1 , wherein the specific resource is not a resource for a Sidelink Synchronization Signal (SLSS) transmitted by the first UE.

4. The method of claim 1 , wherein the first UE determines a time resource pattern based on only the number of resources excluding the specific resource.

5. The method of claim 1 , wherein the first UE determines a time resource pattern including the specific resource, and

wherein the D2D operation is not performed in a resource where the time resource pattern and the specific resource overlay one another.

6. The method of claim 1 , wherein the specific resource is a resource through which a specific signal having a value equal to or greater than a threshold value is received.

7. The method of claim 6 , wherein the specific signal corresponds to a synchronization signal transmitted from a base station.

8. The method of claim 1 , wherein, based on the first UE performing the D2D operation, in a pre-configured frequency band, discovery is performed at a higher priority level than communication.

9. The method of claim 1 , wherein information on the pre-configured resource is transmitted to the second UE.

10. The method of claim 1 ,

wherein, based on the first UE performing the D2D operation, and based on the first UE receiving a discovery signal from the second UE through a physical layer, the discovery signal and a first resource pool through which the discovery signal is received are delivered to an upper layer of the first UE,

determining whether to transmit, from the upper layer, a discovery model and a response signal corresponding to the discovery signal, to the second UE is determined, and

wherein, if the response signal is to be transmitted from the upper layer, delivering, to the physical layer, the response signal and information on a second resource pool through which the response signal is to be transmitted.

11. The method of claim 1 further comprising:

selecting a resource pool for performing the D2D operation by the second UE, and

transmitting the selection result to a base station.

12. A device to device (D2D) operation method of a second user equipment (UE) in a wireless communication system, comprising:

determining reception or non-reception of a D2D signal transmitted by a first UE; and

based on non-reception of the D2D signal reception, transmitting reception failure information to the first UE,

wherein the reception failure information notifies the first UE of a resource through which the second UE is incapable of performing the D2D operation, and

wherein the reception failure information is different than reception failure information based on link quality.

13. A user equipment (UE), comprising:

a transceiver configured for transmitting and receiving radio signals; and

a processor operatively coupled to the transceiver, wherein the processor is configured:

to receive first information from another UE, the other UE being a target of the D2D operation, and

to perform the D2D operation based on the first information,

wherein the first information notifies the processor of a specific resource through which the other UE is incapable of receiving a signal transmitted from the UE,

wherein the UE performs the D2D operation within a number of resources excluding the specific resource, and

wherein, within a pre-configured resource, the D2D operation is performed at a higher priority level than an uplink communication being performed by the UE.

14. The UE of claim 13 , wherein the UE communicates with at least one of a mobile terminal, a network or autonomous vehicles other than the UE.