Method for wireless communication based on relay and apparatus for the same

1. A method for transmitting signals performed in a first terminal connected to a first base station in a communication system, the method comprising:

wherein downlink transmission between the first terminal and the first base station is performed through a first radio link, uplink transmission between the first terminal and the first base station is performed through a second radio link, the first base station is connected to a second base station which is connected to a second terminal, downlink transmission between the second terminal and the second base station is performed through the second radio link, and uplink transmission between the second terminal and the second base station is performed through the first radio link,

receiving scheduling information from the first base station through the first radio link;

generating uplink data based on the scheduling information;

performing puncturing on uplink data symbols positioned in a region to which a downlink synchronization signal is allocated, wherein the downlink synchronization signal is transmitted from the second base station to the second terminal through the second radio link; and

transmitting punctured uplink data through the second radio link.

2. The method of claim 1 , wherein downlink transmission from the first base station to the second base station is performed through the first radio link, and uplink transmission from the second base station to the first base station is performed through the second radio link.

3. The method of claim 1 , wherein, in the communication system based on a frequency division duplexing (FDD) manner, frequency resources used for the first radio link are different from frequency resources used for the second radio link.

4. The method of claim 1 , wherein, in the communication system based on a time division duplexing (TDD) manner, time resources used for the first radio link are different from time resources used for the second radio link.

5. The method of claim 1 , wherein at least one of the first base station and the second base station uses an antenna having a switching beam structure.

6. A method for transmitting signals performed in a first terminal connected to a first base station in a communication system, the method comprising:

wherein downlink transmission between the first terminal and the first base station is performed through a first radio link, uplink transmission between the first terminal and the first base station is performed through a second radio link, the first base station is connected to a second base station which is connected to a second terminal, downlink transmission between the second terminal and the second base station is performed through the second radio link, and uplink transmission between the second terminal and the second base station is performed through the first radio link,

receiving scheduling information from the first base station through the first radio link;

allocating uplink data to radio resources except a region to which a downlink synchronization signal is allocated, wherein the downlink synchronization signal is transmitted from the second base station to the second terminal through the second radio link based on the scheduling information; and

transmitting the allocated uplink data through the second radio link.

7. The method of claim 6 , wherein downlink transmission from the first base station to the second base station is performed through the first radio link, and uplink transmission from the second base station to the first base station is performed through the second radio link.

8. The method of claim 6 , wherein at least one of the first base station and the second base station uses an antenna having a switching beam structure.

9. A first terminal connected to a first base station in a communication system, the first terminal comprising:

a memory for storing a program; and

a processor connected to the memory and adapted to execute the program,

wherein downlink transmission between the first terminal and the first base station is performed though a first radio link, uplink transmission between the first terminal and the first base station is performed through a second radio link, the first base station is connected to a second base station which is connected to a second terminal, downlink transmission between the second terminal and the second base station is performed through the second radio link, and uplink transmission between the second terminal and the second base station is performed through the first radio link,

wherein, in accordance with the program, the processor:

receives scheduling information from the first base station through the first radio link;

generates uplink data based on the scheduling information;

performs puncturing on uplink data symbols positioned in a region to which a downlink synchronization signal is allocated, where the downlink synchronization signal is transmitted from the second base station to the second terminal through the second radio link; and

transmits punctured uplink data through the second radio link.

10. The terminal of claim 9 , wherein downlink transmission from the first base station to the second base station is performed through the first radio link, and uplink transmission from the second base station to the first base station is performed through the second radio link.

11. The terminal of claim 9 , wherein, in the communication system based on a frequency division duplexing (FDD) manner, frequency resources used for the first radio link are different from frequency resources used for the second radio link.

12. The terminal of claim 9 , wherein, in the communication system based on a time division duplexing (TDD) manner, time resources used for the first radio link are different from time resources used for the second radio link.