Method and apparatus for reducing energy consumption of terminal in wireless communication system

1. An operation method of a terminal for reducing energy consumption of the terminal by adjusting a bit resolution value of an analog-to-digital converter (ADC), the operation method comprising:

obtaining a parameter related to the energy consumption of the terminal;

determining the bit resolution value of the ADC for reducing the energy consumption of the terminal, based on the obtained parameter; and

setting the bit resolution value of the ADC as the determined bit resolution value.

2. The operation method of claim 1 , wherein the parameter related to the energy consumption of the terminal comprises:

a maximum modulation and coding scheme (MCS) value; and

a channel quality indicator (CQI) value corresponding to the maximum MCS value usable by a base station for the terminal so that a transmission error of a signal received from the base station is equal to or less than a specific error rate according to the bit resolution value of the ADC.

3. The operation method of claim 2 , wherein the parameter related to the energy consumption of the terminal further comprises:

at least one of a channel intensity between the base station and the terminal, an intensity of interference with the signal received from the base station, thermal noise of the signal received from the base station, an energy consumption amount of the terminal, a residual energy amount of the terminal, a bit resolution range settable by the ADC, or a signal-to-quantization noise ratio (SQNR) of the signal received from the base station according to the bit resolution value of the ADC.

4. The operation method of claim 2 ; wherein the determining of the bit resolution value of the ADC for reducing the energy consumption of the terminal comprises:

determining the bit resolution value of the ADC for reducing the energy consumption of the terminal by comparing the obtained parameter with a pre-set threshold value.

5. The operation method of claim 4 , further comprising:

transmitting, to the base station, the maximum MCS value according to the determined bit resolution value or the CQI value corresponding to the maximum MCS value according to the determined bit resolution value.

6. The operation method of claim 5 , further comprising:

measuring a CQI value; and

reporting, to the base station, a smaller value between the measured CQI value and the CQI value corresponding to the maximum MCS value according to the determined bit resolution value as the CQI value.

7. The operation method of claim 6 ; further comprising:

receiving, from the base station, data encoded according to an MCS value determined by the base station,

wherein a smaller value between an MCS value corresponding to the reported CQI value and the maximum MCS value according to the determined bit resolution value is determined by the base station as the determined MCS value.

8. The operation method of claim 1 , wherein the determining of the bit resolution value of the ADC for reducing the energy consumption of the terminal comprises:

transmitting the obtained parameter to a base station;

receiving, from the base station, the bit resolution value of the ADC for reducing the energy consumption of the terminal determined by the base station based on the obtained parameter; and

determining the bit resolution value of the ADC for reducing the energy consumption of the terminal as the received bit resolution value.

9. An operation method of a base station for reducing energy consumption of a terminal by adjusting a bit resolution value of an analog-to-digital converter (ADC) of the terminal, the operation method comprising:

receiving, from the terminal, at least one of a maximum modulation and coding scheme (MCS) value or a channel quality indicator (CQI) value corresponding to the maximum MCS value usable by the base station for the terminal according to the bit resolution value of the ADC for reducing the energy consumption of the terminal; and

determining an MCS value, based on at least one of the maximum MCS value or the CQI value corresponding to the maximum MCS value.

10. The operation method of claim 9 , wherein the maximum MCS value and the CQI value corresponding to the maximum MCS value are obtained by the terminal,

wherein the maximum MCS value comprises:

the maximum MCS value usable by the base station for the terminal so that a transmission error of a signal received by the terminal from the base station is equal to or less than a specific error rate, according to the bit resolution value of the ADC for reducing the energy consumption of the terminal.

11. The operation method of claim 9 , wherein the bit resolution value of the ADC for reducing the energy consumption of the terminal is determined by the terminal, based on a parameter related to the energy consumption of the terminal obtained by the terminal.

12. The operation method of claim 11 , wherein the parameter related to the energy consumption of the terminal comprises:

the maximum modulation and coding scheme (MCS) value and the channel quality indicator (CQI) value corresponding to the maximum MCS value usable by the base station for the terminal so that a transmission error of a signal received from the base station is equal to or less than a specific error rate according to the bit resolution value of the ADC.

13. The operation method of claim 12 , wherein the parameter related to the energy consumption of the terminal further comprises:

at least one of a channel intensity between the base station and the terminal, an intensity of interference with the signal received from the base station, thermal noise of the signal received from the base station, an energy consumption amount of the terminal, a residual energy amount of the terminal, a bit resolution range settable by the ADC, or a signal-to-quantization noise ratio (SQNR) of the signal received from the base station according to the bit resolution value of the ADC.

14. The operation method of claim 11 , wherein the bit resolution value of the ADC for reducing the energy consumption of the terminal is determined by the terminal by comparing the measured parameter with a pre-set threshold value.

15. The operation method of claim 9 , further comprising:

receiving, from the terminal, a parameter related to the energy consumption of the terminal obtained by the terminal;

determining the bit resolution value of the ADC for reducing the energy consumption of the terminal, based on the received parameter; and

transmitting the determined bit resolution value to the terminal.

16. The operation method of claim 9 , further comprising:

receiving a smaller value, between a CQI value measured by the terminal and the CQI value corresponding to the maximum MCS value, reported as a CQI value from the terminal,

wherein the determining of the MCS value comprises:

determining a smaller value between an MCS value corresponding to the reported CQI value and the maximum MCS value as the MCS value.

17. The operation method of claim 16 , further comprising:

encoding data according to the determined MCS value; and

transmitting the data encoded according to the determined MCS value to the terminal.

18. A terminal comprising:

a transceiver;

at least one memory configured to store a program for reducing energy consumption of the terminal by adjusting a bit resolution value of an analog-to-digital converter (ADC); and

at least one processor configured to control; by executing the program, a parameter related to the energy consumption of the terminal to be obtained, the bit resolution value of the ADC for reducing the energy consumption of the terminal to be determined based on the obtained parameter, and the bit resolution value of the ADC to be set as the determined value.

19. A base station comprising:

a transceiver;

at least one memory configured to store a program for reducing energy consumption of a terminal by adjusting a hit resolution value of an analog-to-digital converter (ADC) of the terminal; and

at least one processor configured to, by executing the program, receive, from the terminal, at least one of a maximum modulation and coding scheme (MCS) value or a channel quality indicator (CQI) value corresponding to the maximum MCS value usable by the base station for the terminal according to the bit resolution value of the ADC for reducing the energy consumption of the terminal and determine an MCS value based on at least one of the maximum MCS value or the CQI value corresponding to the maximum MCS value.