Method and apparatus for measuring and reporting beams in a beamforming based system
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Disclosed is a method of reporting beam measurement state information by a User Equipment (UE). The method may include: measuring beam state information by using a first reception chain and a second reception chain; controlling beam state information on the first reception chain to correspond to beam state information on the second reception chain; calculating state information on each beam based on the controlled beam state information on the first reception chain and beam state information on the second reception chain; and reporting state information on one or more beams.
1. A method by a terminal, the method comprising:
receiving first information associated with a number of beams to be averaged and second information associated with a threshold value;
measuring values of a plurality of beams transmitted from a base station;
generating a measurement result based on the first information and the second information; and
transmitting the measurement result,
wherein the measurement result is obtained by averaging the measured values of the plurality of beams above the threshold value, and
wherein the number of the plurality of beams is equal to or less than the number of beams.
2. The method of claim 1 , wherein a first reception chain is a chain for collecting measurement values of a serving reception beam of the terminal, and a second reception chain is a chain for collecting measurement values of other reception beams except for the serving reception beam of the terminal.
3. The method of claim 1 , further comprising:
assigning weight to the measurement values,
wherein recently collected measurement values are assigned higher weight as compared to other measurement values.
4. The method of claim 1 ,
wherein the first information indicates a maximum number of the measurement values to be averaged per beam, and
wherein recently collected measurement values are assigned higher weight as compared to other measurement values.
5. The method of claim 1 , further comprising:
adjusting a number of samples of measurement values per beam based on the number of beams.
6. A terminal comprising:
a transceiver configured to transmit and receive a signal; and
at least one processor configured to:
receive first information associated with a number of beams to be averaged and second information associated with a threshold value,
measure values of a plurality of beams transmitted from a base station,
generate a measurement result based on the first information and the second information, and
transmit the measurement result,
wherein the measurement result is obtained by averaging the measured values of the plurality beams above the threshold value, and
wherein the number of the plurality beams is equal to or less than the number of beams.
7. The terminal of claim 6 , wherein a first reception chain is a chain for collecting measurement values of a serving reception beam of the terminal, and a second reception chain is a chain for collecting measurement values of other reception beams except for the serving reception beam of the terminal.
8. The terminal of claim 6 ,
wherein the processor is further configured to assign weight to the measurement values, and
wherein recently collected measurement values are assigned higher weight as compared to other measurement values.
9. The terminal of claim 8 , wherein the first information indicates a maximum number of the measurement values to be averaged per beam.
10. The terminal of claim 6 , wherein the processor is further configured to adjust a number of samples of measurement values per beam based on the number of beams.
11. A method of receiving beam state information by a base station, the method comprising:
transmitting first information associated with a number of beams to be averaged and second information associated with a threshold value to a terminal;
transmitting signals based on a plurality of beams to the terminal; and
receiving a measurement result from the terminal,
wherein the measurement result is obtained by averaging measured values of a plurality beams above the threshold value, and
wherein the number of the plurality beams is equal to or less than the number of beams.
12. The method of claim 11 , wherein the first information indicates a maximum number of the measurement values to be averaged per beam.
13. The method of claim 11 , wherein a number of samples of measurement values per beam are adjusted based on the number of beams.
14. A base station comprising:
a transceiver configured to transmit and receive a signal; and
at least one processor configured to:
transmit first information associated with a number of beams to be averaged and second information associated with a threshold value to a terminal,
transmit signals based on a plurality of beams to the terminal, and
receive a measurement result from the terminal,
wherein the measurement result is obtained by averaging measured values of a plurality beams above the threshold value, and
wherein the number of the plurality beams is equal to or less than the number of beams.
15. The base station of claim 14 , wherein the first information indicates a maximum number of the measurement values to be averaged per beam.
16. The base station of claim 14 , wherein a number of samples of measurement values per beam are adjusted based on the number of beams.