Method and apparatus for controlling power of uplink in a beam forming system

1. A method to control power of an uplink, at a base station, in a wireless communication system, the method comprising:

generating power control information for reception beams of the base station based on signals received using the reception beams;

transmitting, to a terminal, the power control information;

transmitting, to the terminal, a reception beam identifier of a reception beam determined among the reception beams; and

receiving, from the terminal, a signal transmitted using a transmission power which is determined based on the reception beam identifier and the power control information.

2. The method as claimed in claim 1 , wherein the generating comprises:

measuring a noise and interference (NI) value corresponding to each of the reception beams based on the signals received over the reception beams.

3. The method as claimed in claim 2 , wherein the power control information includes information related to the NI values.

4. The method as claimed in claim 2 , wherein the power control information:

includes an average NI value of the reception beams and an NI offset of the reception beam mapped to the determined reception beam identifier, the NI offset indicating a difference between an NI value of the reception beam and the average NI value.

5. The method as claimed in claim 1 , further comprising: if the terminal includes a plurality of transmission beams, determining at least one reception beam for each of the plurality of transmission beams from the reception beams.

6. A method to control power of an uplink at a terminal in a wireless communication system, the method comprising:

receiving, from a base station, power control information generated based on signals received using reception beams of the base station;

receiving, from the base station, a reception beam identifier of a reception beam determined among the reception beams;

determining a transmission power of a signal based on the reception beam identifier and the power control information; and

transmitting the signal to the base station using the determined transmission power.

7. The method of as claimed in claim 6 , wherein determining the transmission power comprises:

obtaining information related to a noise and interference (NI) value of the reception beams mapped to the reception beam identifier among NI values of the reception beams included in the power control information; and

determining the transmission power based on the information related to the NI value of the reception beam.

8. The method as claimed in claim 6 , wherein the power control information includes information related to noise and interference (NI) values measured corresponding to each of the reception beams.

9. The method as claimed in claim 6 , wherein determining the transmission power comprises:

obtaining an average noise and interference (NI) value of the reception beams and an NI offset of the reception beam mapped to the reception beam identifier included in the power control information; and

determining the transmission power based on the NI offset.

10. The method as claimed in claim 6 , wherein the power control information includes an average noise and interference (NI) value of the reception beams and an NI offset of the reception beam mapped to the reception beam identifier, the NI offset indicating a difference between an NI value of the reception beam and the average NI value.

11. The method as claimed in claim 6 , wherein if the terminal includes a plurality of transmission beams, receiving, from the base station, information related to at least one reception beam corresponding to each of the plurality of transmission beams from the reception beams.

12. A base station to control power of an uplink in a wireless communication system, the base station comprising:

a controller configured to generate power control information for reception beams of the base station based on signal received by the reception beams;

a transceiver configured to:

transmit, to a terminal, the power control information, and

transmit, to the terminal, a reception beam identifier of a reception beam determined among the reception beams, and

receive, a signal transmitted using a transmission power that is determined based on the reception beam identifier and the power control information from the terminal.

13. The base station as claimed in claim 12 , wherein the controller is configured to measure a noise and interference (NI) value corresponding to each of the reception beams based on the signals received over the reception beams.

14. The base station as claimed in claim 13 , wherein the power control information includes information related to the measured NI values.

15. The base station as claimed in claim 13 , wherein the power control information includes an average NI value of the reception beams and an NI offset of the reception beam mapped to the determined reception beam identifier, the NI offset indicating a difference between an NI value of the reception beam and the average NI value.

16. The base station as claimed in claim 12 , wherein the controller is further configured to: if the terminal includes a plurality of transmission beams, determine at least one reception beam for each of the plurality of transmission beams from the reception beams.

17. A terminal to control power of an uplink in a wireless communication system, the terminal comprising:

a transceiver configured to receive, from a base station, power control information generated based on signals received using reception beams of the base station, and receive, from the base station, a reception beam identifier of a reception beam determined among the reception beams; and

a controller configured to:

determine a transmission power of a signal based on the reception beam identifier and the power control information, and

control the transceiver to transmit the signal to the base station using the determined transmission power.

18. The terminal as claimed in claim 17 , wherein the controller is configured to obtain information related to a noise and interference (NI) value of the reception beam mapped to the reception beam identifier among NI values of the reception beams included in the power control information, and determine the transmission power based on the information related to an NI value of the reception beam.

19. The terminal as claimed in claim 17 , wherein the power control information includes information related to noise and interference (NI) values measured corresponding to each of the reception beams.

20. The terminal as claimed in claim 17 , wherein the controller is configured to obtain an average noise and interference (NI) value of the reception beams and an NI offset of a reception beam mapped to the reception beam identifier included in the power control information, and determine the transmission power based on the NI offset.

21. The terminal as claimed in claim 17 , wherein the power control information includes an average noise and interference (NI) value of the reception beams and an NI offset of the reception beam mapped to the reception beam identifier, the NI offset indicating a difference between an NI value of the reception beam and the average NI value.

22. The terminal as claimed in claim 17 , wherein the transceiver is configured to: if the terminal includes a plurality of transmission beams, receive, from the base station, at least one reception beam corresponding to each of the plurality of transmission beams.