Uplink signal transmitting and receiving method and device in a wireless communication system
A method and an apparatus for transmitting and receiving an uplink signal by a mobile terminal in a wireless communication system are provided. The first mobile terminal includes a receiver configured to receive, from a base station, a power control variable determined based on an interference value for a first receive beam used in order to receive an uplink signal of the first mobile terminal from among a plurality of receive beams of the base station, to receive, from the base station, neighboring receive beam allocation data indicating whether any of the receive beams in the plurality of receive beams, different from the first receive beam, is being used for uplink signal reception, to determine an uplink transmit power value based on the received power control variable and neighboring receive beam allocation data, and to transmit an uplink signal to the base station by using the determined uplink transmit power value.
1. A method for transmitting an uplink signal by a first mobile terminal in a wireless communication system, the method comprising:
receiving from a base station, a power control variable determined based on an interference value for a first reception beam used for reception of the uplink signal of the first mobile terminal among multiple reception beams of the base station;
receiving from the base station, neighboring reception beam allocation information indicating whether to use other reception beams different from the first reception beam among the multiple reception beams for reception of the uplink signal;
determining an uplink transmission power value based on the received power control variable and the received neighboring reception beam allocation information; and
transmitting the uplink signal to the base station based on the determined uplink transmission power value.
2. The method of claim 1 , wherein the interference value for the first reception beam is determined based on an angle between the first reception beam and at least one second reception beam that indicates at least one reception beam used for reception of the uplink signal of at least one second mobile terminal among the other reception beams.
3. The method of claim 1 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to the other reception beams different from the first reception beam in the same frame as a frame in which the first mobile terminal transmits the uplink signal.
4. The method of claim 1 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to reception beams in which mobile terminals transmitting the uplink signals exist among the other reception beams for each channel.
5. The method of claim 1 , wherein the neighboring reception beam allocation information is included in resource allocation information and is broadcast to mobile terminals that transmit uplink signals corresponding to the first reception beam.
6. The method of claim 1 , wherein the determining of the uplink transmission power value comprises:
detecting at least one reception beam used for reception of the uplink signal among the other reception beams based on the neighboring reception beam allocation information;
detecting the interference value for the at least one reception beam based on the received power control variable; and
determining the uplink transmission power value based on the detected interference value.
7. The method of claim 1 , wherein the power control variable comprises information indicating a difference in an interference for each of the multiple reception beams of the base station.
8. A method for receiving an uplink signal by a base station in a wireless communication system, the method comprising:
determining a power control variable based on an interference value for a first reception beam used for reception of the uplink signal of a first mobile terminal among multiple reception beams of the base station;
transmitting the determined power control variable to the first mobile terminal;
transmitting to the first mobile terminal, neighboring reception beam allocation information indicating whether to use other reception beams different from the first reception beam among the multiple reception beams for reception of the uplink signal; and
receiving the uplink signal transmitted based on an uplink transmission power value from the first mobile terminal,
wherein the uplink transmission power value is determined based on the transmitted power control variable and neighboring reception beam allocation information.
9. The method of claim 8 , wherein the interference value for the first reception beam is determined based on an angle between the first reception beam and at least one second reception beam that indicates at least one reception beam used for reception of the uplink signal of at least one second mobile terminal among the other reception beams.
10. The method of claim 8 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to the other reception beams different from the first reception beam in the same frame as a frame in which the first mobile terminal transmits the uplink signal.
11. The method of claim 8 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to at least one second reception beam for each channel.
12. The method of claim 8 , wherein the neighboring reception beam allocation information is included in resource allocation information and is broadcast to mobile terminals that transmit uplink signals corresponding to the first reception beam.
13. The method of claim 8 , wherein the uplink transmission power value is determined based on the interference value for at least one reception beam detected based on the neighboring reception beam allocation information used for reception of the uplink signal among the other reception beams, and
wherein the interference value is detected based on the power control variable.
14. The method of claim 8 , wherein the power control variable comprises information indicating a difference in an interference for each of the multiple reception beams of the base station.
15. A first mobile terminal in a wireless communication system, the first mobile terminal comprising:
a receiver configured to receive from a base station, a power control variable determined based on an interference value for a first reception beam used for reception of an uplink signal of the first mobile terminal among multiple reception beams of the base station and neighboring reception beam allocation information indicating whether to use other reception beams different from the first reception beam among the multiple reception beams for reception of the uplink signal;
a controller configured to determine an uplink transmission power value based on the received power control variable and the received neighboring reception beam allocation information; and
a transmitter configured to transmit the uplink signal to the base station based on the determined uplink transmission power value.
16. The first mobile terminal of claim 15 , wherein the interference value for the first reception beam is determined based on an angle between the first reception beam and at least one second reception beam that indicates at least one reception beam used for reception of the uplink signal of at least one second mobile terminal among the other reception beams.
17. The first mobile terminal of claim 15 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to the other reception beams different from the first reception beam in the same frame as a frame in which the first mobile terminal transmits the uplink signal.
18. The first mobile terminal of claim 15 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to reception beams in which mobile terminals transmitting the uplink signals exist among the other reception beams for each channel.
19. The first mobile terminal of claim 15 , wherein the neighboring reception beam allocation information is included in resource allocation information and is broadcast to mobile terminals that transmit uplink signals corresponding to the first reception beam.
20. The first mobile terminal of claim 15 , wherein the controller is further configured to detects at least one reception beam used for reception of the uplink signal among the other reception beams based on the neighboring reception beam allocation information, to detects the interference value for the at least one reception beam based on the received power control variable, and to determine the uplink transmission power value based on the detected interference value.
21. The first mobile terminal of claim 15 , wherein the power control variable comprises information indicating a difference in an interference for each of the multiple reception beams of the base station.
22. A base station in a wireless communication system, the base station comprising:
a controller configured to determine a power control variable based on an interference value for a first reception beam used for reception of an uplink signal of a first mobile terminal among multiple reception beams of the base station and to generate neighboring reception beam allocation information indicating whether to use other reception beams different from the first reception beam among the multiple reception beams for reception of the uplink signal;
a transmitter configured to transmit the determined power control variable and the neighboring reception beam allocation information to the first mobile terminal; and
a receiver configured to receive the uplink signal transmitted based on an uplink transmission power value from the first mobile terminal,
wherein the uplink transmission power value is determined based on the transmitted power control variable and neighboring reception beam allocation information.
23. The base station of claim 22 , wherein the interference value for the first reception beam is determined based on an angle between the first reception beam and at least one second reception beam that indicates at least one reception beam used for reception of the uplink signal of at least one second mobile terminal among the other reception beams.
24. The base station of claim 22 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to the other reception beams different from the first reception beam in the same frame as a frame in which the first mobile terminal transmits the uplink signal.
25. The base station of claim 22 , wherein the neighboring reception beam allocation information comprises information indicating whether there exist mobile terminals that transmit uplink signals corresponding to at least one second reception beam for each channel.
26. The base station of claim 22 , wherein the neighboring reception beam allocation information is included in resource allocation information and is broadcast to mobile terminals that transmit uplink signals corresponding to the first reception beam.
27. The base station of claim 22 , wherein the uplink transmission power value is determined based on the interference value for at least one reception beam detected based on the neighboring reception beam allocation information used for reception of the uplink signal among the other reception beams, and
wherein the interference value is detected based on the power control variable.
28. The base station of claim 22 , wherein the power control variable comprises information indicating a difference in an interference for each of the multiple reception beams of the base station.