Method for transmitting and receiving signal using beam sharing between user equipments

1. A method of receiving a signal by a user equipment (UE) in a wireless communication system, the UE comprising at least one distributed antenna unit (DU), the method comprising:

receiving information about a preferred beam through the DU from another UE, the information about the preferred beam comprising information indicating at least one preferred beam for the another UE;

determining at least one shared beam based on the received information about the preferred beam;

transmitting information about the determined at least one shared beam through the DU to a base station (BS);

determining a dedicated beam of the UE based on the determined at least one shared beam;

transmitting information about the determined dedicated beam through the DU to the BS; and

simultaneously receiving UE-common data based on the information about the at least one shared beam and UE-specific data based on the information about the dedicated beam from the BS.

2. The method according to claim 1 , further comprising receiving group information from the BS, wherein the group information comprises information indicating a representative UE in a UE group and information indicating one or more member UEs, and wherein the UE corresponds the representative UE.

3. The method according to claim 1 , further comprising determining at least one preferred beam of the UE,

wherein the at least one shared beam is determined from among beams overlapping between the at least one preferred beam for the UE and the at least one preferred beam for the another UE.

4. The method according to claim 1 , further comprising receiving information indicating a specific shared beam from the BS,

wherein the dedicated beam is determined from among beams other than the specific shared beam.

5. The method according to claim 1 , wherein the information regarding the preferred beam further comprises information regarding priority of at least one shared beam candidate.

6. The method according to claim 1 , wherein each of the information regarding the shared beam and the information regarding the dedicated beam comprises precoding matrix index information.

7. The method according to claim 1 , wherein the UE-common data is received through a physical broadcast channel (PBCH) and the UE-specific data is received through a physical downlink shared channel (PDSCH).

8. The method according to claim 1 , wherein the UE-common data is received through a physical multicast channel (PMCH) and the UE-specific data is received through a physical downlink shared channel (PDSCH).

9. The method according to claim 1 , wherein the UE-common data and the UE-specific data are received through different antenna ports.

10. A user equipment (UE) for transmitting precoding information in a wireless communication system, the UE comprising:

at least one distributed antenna unit (DU) configured to transmit and receive a radio signal; and

a processor connected to the DU while being operated,

wherein the processor is configured to receive information about a preferred beam from another UE, the information about the preferred beam comprising information indicating at least one preferred beam for the another UE, to determine at least one shared beam based on the received information about the preferred beam, to transmit information about the determined at least one shared beam to a base station (BS), to determine a dedicated beam of the specific UE based on the determined at least one shared beam, to transmit information about the determined dedicated beam to the BS, and to simultaneously receive UE-common data based on the information about the at least one shared beam and UE-specific data based on the information about the dedicated beam, from the BS.

11. The UE according to claim 10 , wherein the processor is further configured to receive group information from the BS, and

wherein the group information comprises information indicating a representative UE in a UE group and information indicating one or more member UEs, and wherein the UE corresponds the representative UE.

12. The UE according to claim 10 , wherein the processor is further configured to determine at least one preferred beam of the UE, and

wherein the at least one shared beam is determined from among beams overlapping between at least one preferred beam for the UE and the at least one preferred beam for the another UE.

13. The UE according to claim 10 , wherein the processor is further configured to receive information indicating a specific shared beam from the BS, and

wherein the dedicated beam is determined from among beams other than the specific shared beam.

14. The UE according to claim 10 , wherein the information about the preferred beam further comprises information about priority of at least one shared beam candidate.

15. The UE according to claim 10 , wherein each of the information about the shared beam and the information about the dedicated beam comprises precoding matrix index information.

16. The UE according to claim 10 , wherein the UE-common data is received through a physical broadcast channel (PBCH) and the UE-specific data is received through a physical downlink shared channel (PDSCH).

17. The UE according to claim 10 , wherein the UE-common data is received through a physical multicast channel (PMCH) and the UE-specific data is received through a physical downlink shared channel (PDSCH).

18. The UE according to claim 10 , wherein the UE-common data and the UE-specific data are received through different antenna ports.

19. The UE according to claim 10 , wherein the DU is an activated DU.

20. The method according to claim 1 , wherein the DU is an activated DU.