Device, method and computer readable medium for adjusting beamforming profiles

1. An electronic device, comprising:

at least one processor; and

at least one memory including computer program code;

the at least one memory and the computer program code configured to, with the at least one processor, cause the electronic device to:

obtain performance measurement information for a broadcast area where an initial beamforming profile is currently used, the initial beamforming profile being determined previously from a set of candidate beamforming profiles;

determine, based on the performance measurement information, the initial beamforming profile, each candidate beamforming profile in the set and a learning model, a respective beamforming performance estimation in case where a respective candidate beamforming profile is used in the broadcast area, wherein the learning model specifies an association between historical measurement information for the broadcast area and beamforming performance, and wherein to determine the respective beamforming performance estimation includes to

determine a difference between a beamforming power gain vector for the initial beamforming profile and a beamforming power gain vector for a first candidate beamforming profile in the set,

estimate a change in the measurement information based on the difference, and

determine, based on the measurement information and the estimated change, a first beamforming performance estimation in case where the first candidate beamforming profile is used in the broadcast area; and

select one candidate beamforming profile from the set for the broadcast area based on the beamforming performance estimation and the performance measurement information such that an optimal beamforming performance can be obtained by using the selected candidate beamforming profile.

2. The electronic device of claim 1 , wherein the electronic device is caused to select one candidate beamforming profile from the set by:

comparing a second beamforming performance estimation in case where a second candidate beamforming profile is used in the broadcast area with a third beamforming performance estimation in case where a third candidate beamforming profile is used in the broadcast area;

in response to a determination that the second beamforming performance estimation is greater than the third beamforming performance estimation, increasing a first probability that the second candidate beamforming profile is selected;

in response to a determination that the second beamforming performance estimation is less than the third beamforming performance estimation, increasing a second probability that the third candidate beamforming profile is selected; and

selecting the second candidate beamforming profile with the first increased probability or the third candidate beamforming profile with the second increased probability.

3. The electronic device of claim 1 , wherein the electronic device is further caused to update the learning model with the measurement information.

4. The electronic device of claim 1 , wherein each of the measurement information, the historical measurement information and the beamforming performance is associated with spatial distribution information of terminal devices in the broadcast area.

5. A method for communications, comprising:

obtaining performance measurement information for a broadcast area where an initial beamforming profile is currently used, the initial beamforming profile being determined previously from a set of candidate beamforming profiles;

determining, based on the performance measurement information, the initial beamforming profile, each candidate beamforming profile in the set and a learning model, a respective beamforming performance estimation in case where a respective candidate beamforming profile is used in the broadcast area, wherein the learning model specifies an association between historical measurement information for the broadcast area and beamforming performance, and wherein determining the respective beamforming performance estimation includes

determining a difference between a beamforming power gain vector for the initial beamforming profile and a beamforming power gain vector for a first candidate beamforming profile in the set,

estimating a change in the measurement information based on the difference, and

determining, based on the measurement information and the estimated change, a first beamforming performance estimation in case where the first candidate beamforming profile is used in the broadcast area; and

selecting one candidate beamforming profile from the set for the broadcast area based on the beamforming performance estimation and the performance measurement information such that an optimal beamforming performance can be obtained by using the selected candidate beamforming profile.

6. The method of claim 5 , wherein selecting the one candidate beamforming profile comprises:

comparing a second beamforming performance estimation in case where a second candidate beamforming profile is used in the broadcast area with a third beamforming performance estimation in case where a third candidate beamforming profile is used in the broadcast area;

in response to a determination that the second beamforming performance estimation is greater than the third beamforming performance estimation, increasing a first probability that the second candidate beamforming profile is selected;

in response to a determination that the second beamforming performance estimation is less than the third beamforming performance estimation, increasing a second probability that the third candidate beamforming profile is selected; and

selecting the second candidate beamforming profile with the first increased probability or the third candidate beamforming profile with the second increased probability.

7. The method of claim 5 , further comprising:

updating the learning model with the measurement information.

8. The method of claim 5 , wherein each of the measurement information, the historical measurement information and the beamforming performance is associated with spatial distribution information of terminal devices in the broadcast area.

9. An apparatus for communications, comprising:

means for obtaining performance measurement information for a broadcast area where an initial beamforming profile is currently used, the initial beamforming profile being determined previously from a set of candidate beamforming profiles;

means for determining, based on the performance measurement information, the initial beamforming profile, each candidate beamforming profile in the set and a learning model, a respective beamforming performance estimation in case where a respective candidate beamforming profile is used in the broadcast area, wherein the learning model specifies an association between historical measurement information for the broadcast area and beamforming performance, and wherein means for determining the respective beamforming performance estimation comprises:

means for determining a difference between a beamforming power gain vector for the initial beamforming profile and a beamforming power gain vector for a first candidate beamforming profile in the set,

means for estimating a change in the measurement information based on the difference, and

means for determining, based on the measurement information and the estimated change, a first beamforming performance estimation in case where the first candidate beamforming profile is used in the broadcast area; and

means for selecting one candidate beamforming profile from the set for the broadcast area based on the beamforming performance estimation and the performance measurement information such that an optimal beamforming performance can be obtained by using the selected candidate beamforming profile.

10. The apparatus of claim 9 , wherein means for selecting the one candidate beamforming profile comprises:

means for comparing a second beamforming performance estimation in case where a second candidate beamforming profile is used in the broadcast area with a third beamforming performance estimation in case where a third candidate beamforming profile is used in the broadcast area;

means for increasing a first probability that the second candidate beamforming profile is selected in response to a determination that the second beamforming performance estimation is greater than the third beamforming performance estimation;

means for increasing a second probability that the third candidate beamforming profile is selected in response to a determination that the second beamforming performance estimation is less than the third beamforming performance estimation; and

means for selecting the second candidate beamforming profile with the first increased probability or the third candidate beamforming profile with the second increased probability.

11. The apparatus of claim 9 , further comprising:

means for updating the learning model with the measurement information.

12. The apparatus of claim 9 , wherein each of the measurement information, the historical measurement information and the beamforming performance is associated with spatial distribution information of terminal devices in the broadcast area.