Reusing resources in a wireless relay

1. An operation method of a repeater relaying wireless communications between a base station and a terminal in a communication system, the operation method comprising:

requesting, from the base station, permission to reuse radio resources allocated to one or more beams of a plurality of beams of the base station for beamforming for a link between the repeater and the terminal;

receiving, from the base station, a signal permitting to reuse radio resources allocated to one or more beams of the plurality of beams of the base station;

obtaining reuse preference information for the plurality of beams of the base station, which is determined based on a signaling signal transmission and reception operation with the base station;

receiving, from the base station, a first signal to be transmitted to the terminal;

transmitting, to the terminal, the first signal by using a first radio resource used for transmission of the first signal; and

transmitting, to the terminal, the first signal by using a second radio resource selected based on the determined reuse preference information,

wherein the obtaining of the reuse preference information comprises:

determining reuse preference for each of the plurality of beams of the base station; and

transmitting, to the base station, the reuse preference information including information on the determined reuse preference for each of the plurality of beams through a first signaling signal.

2. The operation method according to claim 1 , wherein the reuse preference information includes information on a reuse non-preferred beam index set, and the transmitting of the first signal to the terminal by using the second radio resource comprises:

identifying information on at least one beam that does not correspond to one or more indexes included in the reuse non-preferred beam index set among the plurality of beams of the base station;

selecting a radio resource allocated to the at least one beam as the second radio resource; and

transmitting, to the terminal, the first signal by using the selected second radio resource.

3. The operation method according to claim 1 , wherein the reuse preference information includes information on a reuse preferred beam index set, and the transmitting of the first signal to the terminal by using the second radio resource comprises:

identifying information on one or more beams corresponding to one or more indexes included in the reuse preferred beam index set among the plurality of beams of the base station;

selecting a radio resource allocated to the one or more beams corresponding to the one or more indexes as the second radio resource; and

transmitting, to the terminal, the first signal by using the selected second radio resource.

4. The operation method according to claim 1 , further comprising:

receiving, from the terminal, a first report including information on a result of receiving the first signal; and

transmitting the first report to the base station.

5. A base station performing wireless communications with a terminal through relaying of a repeater in a communication system, the base station comprising:

a processor;

a memory electronically communicating with the processor; and

instructions stored in the memory,

wherein when executed by the processor, the instructions cause the base station to:

receive, from the repeater, a request for permission to reuse radio resources allocated to one or more beams of a plurality of beams of the base station for beamforming for a link between the repeater and the terminal;

transmit, to the repeater, a signal permitting reuse of the radio resources allocated to the one or more beams of the plurality of beams of the base station;

obtain reuse preference information for the plurality of beams of the base station, which is determined based on a signaling signal transmission and reception operation with the repeater;

transmit, to the repeater, a first signal to be transmitted to the terminal;

receive, from the repeater, a first report including information on a result of reception of the first signal at the terminal; and

based on comparison of the reuse preference information and information included in the first report, determine whether an interpretation change for the first report is required.

6. The base station according to claim 5 , wherein the reuse preference information includes information on a reuse non-preferred beam index set, and the instructions further cause the base station to:

compare a first beam index indicated by the first report with information of the reuse non-preferred beam index set; and

when the first beam index is not included in the reuse non-preferred beam index set, determine that the interpretation change for the first report is required.

7. The base station according to claim 5 , wherein the reuse preference information includes information on a reuse preferred beam index set, and the instructions further cause the base station to:

compare a first beam index indicated by the first report with information of the reuse preferred beam index set; and

when the first beam index is included in the reuse preferred beam index set, determine that the interpretation change for the first report is required.

8. The base station according to claim 5 , wherein the instructions further cause the base station to:

receive, from the repeater, the reuse preference information determined by the repeater through a first signaling signal; and

identify information on whether to prefer reuse for each of the plurality of beams, which is included in the reuse preference information.

9. The base station according to claim 5 , wherein the instructions further cause the base station to:

determine whether to prefer reuse for each of the plurality of beams; and

transmit, to the repeater, the reuse preference information including information on reuse preference determined for each of the plurality of beams through a second signaling signal.

10. An operation method of a repeater relaying wireless communications between a base station and a terminal in a communication system, the operation method comprising:

requesting, from the base station, permission to reuse radio resources allocated to one or more beams of a plurality of beams of the base station for beamforming for a link between the repeater and the terminal;

receiving, from the base station, a signal permitting to reuse radio resources allocated to one or more beams of the plurality of beams of the base station;

obtaining reuse preference information for the plurality of beams of the base station, which is determined based on a signaling signal transmission and reception operation with the base station;

receiving, from the base station, a first signal to be transmitted to the terminal;

transmitting, to the terminal, the first signal by using a first radio resource used for transmission of the first signal; and

transmitting, to the terminal, the first signal by using a second radio resource selected based on the determined reuse preference information,

wherein the obtaining of the reuse preference information comprises:

receiving, from the base station, the reuse preference information determined by the base station through a second signaling signal; and

identifying information on whether to prefer reuse for each of the plurality of beams, which is included in the reuse preference information.

11. The operation method according to claim 10 , wherein the reuse preference information includes information on a reuse non-preferred beam index set, and the transmitting of the first signal to the terminal by using the second radio resource comprises:

identifying information on at least one beam that does not correspond to one or more indexes included in the reuse non-preferred beam index set among the plurality of beams of the base station;

selecting a radio resource allocated to the at least one beam as the second radio resource; and

transmitting, to the terminal, the first signal by using the selected second radio resource.

12. The operation method according to claim 10 , wherein the reuse preference information includes information on a reuse preferred beam index set, and the transmitting of the first signal to the terminal by using the second radio resource comprises:

identifying information on one or more beams corresponding to one or more indexes included in the reuse preferred beam index set among the plurality of beams of the base station;

selecting a radio resource allocated to the one or more beams corresponding to the one or more indexes as the second radio resource; and

transmitting, to the terminal, the first signal by using the selected second radio resource.

13. The operation method according to claim 10 , further comprising:

receiving, from the terminal, a first report including information on a result of receiving the first signal; and

transmitting the first report to the base station.