Method and radio base station for handling power disturbance in the radio base station

1. A method performed by a radio base station for handling a power disturbance caused by a radio unit, RU, of the radio base station, the method comprising:

obtaining scheduling information of data traffic associated with the RU;

comparing the power disturbance with one or more first thresholds, wherein the power disturbance is caused by the RU adapted to handle the data traffic according to the scheduling information; and

adjusting a switching frequency of a direct current to direct current, DC/DC converter based on the comparison, wherein the DC/DC converter is comprised in the RU to power the RU.

2. The method according to claim 1 , the adjusting comprising:

increasing the switching frequency of the DC/DC converter when the power disturbance is above a maximum threshold.

3. The method according to claim 1 , the adjusting comprising:

decreasing the switching frequency of the DC/DC converter when the power disturbance is below a minimum threshold.

4. The method according to claim 1 , wherein the RU is operable in different Radio Access Technologies, RATs, and the one or more first thresholds are configured per RAT.

5. The method according to claim 1 , further comprising:

adjusting a switching frequency of an alternating current to direct current, AC/DC, converter adapted to power the radio base station, when a sum of power disturbances caused by a plurality of RUs of the radio base station in a sector is above a second threshold.

6. The method according to claim 1 , further comprising:

determining that a failure has occurred in the radio base station, when a number of times of the power disturbances are above the first and/or second thresholds, or adjusting the switching frequency of the DC/DC converter and/or the AC/DC, is above a third threshold.

7. The method according to claim 1 , further comprising:

determining that a failure has occurred in the radio base station, when a number of times of the power disturbances being above the one or more first thresholds after adjusting the switching frequency of the DC/DC converter and/or above a second threshold after adjusting a switching frequency of the AC/DC converter, is above a fourth threshold.

8. A non-transitory computer-readable storage medium, having stored thereon a computer program product comprising instructions which, when executed on at least one processor, cause the at least one processor to carry out the method according to claim 1 , as performed by the radio base station.

9. A radio base station for handling a power disturbance caused by a radio unit, RU, of the radio base station, wherein the radio base station is configured to:

obtain scheduling information of data traffic associated with the RU;

compare the power disturbance with one or more first thresholds, wherein the power disturbance is caused by the RU adapted to handle the data traffic according to the scheduling information; and

adjust a switching frequency of a direct current to direct current, DC/DC converter based on the comparison, wherein the DC/DC converter is comprised in the RU to power the RU.

10. The radio base station according to claim 9 , further configured to:

increase the switching frequency of the DC/DC converter when the power disturbance is above a maximum threshold.

11. The radio base station according to claim 9 , further configured to:

decrease the switching frequency of the DC/DC converter when the power disturbance is below a minimum threshold.

12. The radio base station according to claim 9 , wherein the RU is operable in different Radio Access Technologies, RATs, and the one or more first thresholds are configured per RAT.

13. The radio base station according to claim 9 , further configured to:

adjust a switching frequency of an alternating current to direct current, AC/DC, converter adapted to power the radio base station, when a sum of power disturbances caused by a plurality of RUs of the radio base station in a sector is above a second threshold.

14. The radio base station according to claim 9 , further configured to:

determine that a failure has occurred in the radio base station, when a number of times of adjusting a switching frequency of the DC/DC converter and/or the AC/DC converter is above a third threshold.

15. The radio base station according to claim 9 , further configured to:

determine that a failure has occurred in the radio base station, when a number of times of the power disturbance being above the one or more first thresholds after adjusting the switching frequency of the DC/DC converter and/or above a second threshold after adjusting a switching frequency of the AC/DC converter, is above a fourth threshold.

16. A radio base station comprising a radio unit (RU) adapted to handle data traffic according to scheduling information, and processing circuitry configured to:

obtain scheduling information of data traffic associated with the RU;

compare a power disturbance with one or more first thresholds, wherein the power disturbance is caused by the RU adapted to handle the data traffic according to the scheduling information; and

adjust a switching frequency of a direct current to direct current, DC/DC, converter based on the comparison, wherein the DC/DC converter is comprised in the RU to power the RU.