SYSTEMS AND METHODS FOR DETERMINING AN OVER POWER SUBSCRIPTION ADJUSTMENT FOR A RADIO EQUIPMENT

• US 20190313346A1
• Filed: 03/31/2016
• Published: 10/10/2019
• Est. Priority Date: 03/31/2016
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Griffioen, Robert
• Granted Patent: US 10,827,438 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/00 Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
• CPC Class Codes: H04B 17/13 of power amplifiers, e.g. gain or non-linearity
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/223 predicting future states of the transmission
• CPC Class Codes: H04W 52/225 Calculation of statistics, e.g. average, variance
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading

Abstract

Systems and methods for determining an over power subscription adjustment for a Radio Equipment (RE) are provided. In some embodiments, a method of operation of an RE includes determining an over power subscription adjustment for one or more carriers based on one or more system parameters and providing the over power subscription adjustment to a Radio Equipment Controller (REC) for the one or more carriers. According to some embodiments, this permits the network operator to better utilize radio network resources by over subscribing carrier power levels. The operator can do this without exposing radio hardware to damage by adaptive learning of Mean Power Limiting (MPL) parameters. Further, the degree of over subscription can be dynamically adjusted to suit network operating conditions. This can lead to improved quality of service metrics and increased radio sector cell size.

Claims

1. A method of operation of a Radio Equipment, RE, comprising:

determining an over power subscription adjustment for one or more carriers based on one or more system parameters; and

providing the over power subscription adjustment to a Radio Equipment Controller, REC, for the one or more carriers.

2. The method of claim 1 further comprising:

updating the over power subscription adjustment for the one or more carriers based on current operating conditions; and

providing the over power subscription adjustment to the REC for the one or more carriers.

3. The method of claim 1 wherein the one or more system parameters comprises at least one of the group consisting of:

a number of active carriers served by the RE,

a Radio Access Type, RAT, of the active carriers served by the RE, and

an average carrier power utilization of the active carriers served by the RE.

4. The method of any of claim 1 wherein determining the over power subscription adjustment for the one or more carriers comprises determining the over power subscription adjustment for the one or more carriers using a statistical process based on the one or more system parameters.

5. The method of claim 1 wherein determining the over power subscription adjustment for the one or more carriers comprises determining the over power subscription adjustment for the one or more carriers using an Artificial Neural Network, ANN, based on the one or more system parameters.

6. The method of claim 5 wherein the ANN is a Bayesian ANN.

7. The method of claim 1 wherein the over power subscription adjustment for the one or more carriers comprises at least one of a baseband power adjustment and a Mean Power Limiting, MPL, timing adjustment.

8. The method of claim 7 wherein determining the over power subscription adjustment for the one or more carriers comprises:

determining that a baseband power adjustment is needed for the one or more carriers where the baseband power adjustment is either an increase to the baseband power for the one or more carriers or a decrease to the baseband power for the one or more carriers;

in response to determining that the baseband power adjustment is needed, determining the baseband power adjustment for the one or more carriers;

determining that an MPL timing adjustment is needed for the one or more carriers where the MPL timing adjustment is either an increase to the MPL timing for the one or more carriers or a decrease to the MPL timing for the one or more carriers; and

in response to determining that the MPL timing adjustment is needed, determining the MPL timing adjustment for the one or more carriers.

9. The method of claim 8 wherein:

determining that the baseband power adjustment is needed for the one or more carriers comprises determining that a signal level of the one or more carriers is consistently below a mean power threshold for the one or more carriers; and

determining the baseband power adjustment for the one or more carriers comprises determining an increase to the baseband power for the one or more carriers.

10. The method of claim 8 wherein determining that the baseband power adjustment is needed and determining that the MPL timing adjustment is needed comprises:

determining a probability that the baseband power adjustment is needed and a probability that the MPL timing adjustment is needed;

in response to determining that the probability that the baseband power adjustment is needed is greater than the probability that the MPL timing adjustment is needed;

determining that the baseband power adjustment is needed; and

determining that the MPL timing adjustment is not needed; and

in response to determining that the probability that the baseband power adjustment is needed is not greater than the probability that the MPL timing adjustment is needed;

determining that the baseband power adjustment is not needed; and

determining that the MPL timing adjustment is needed.

11. The method of any of claim 1 further comprising saving the over power subscription adjustment for the one or more carriers.

12. The method of claim 1 wherein the one or more carriers is a single carrier served by the RE.

13. The method of claim 1 wherein the one or more carriers is more than one carrier served by the RE and the over power subscription adjustment applies to each of the more than one carrier.

14. The method of any of claim 1 wherein providing the over power subscription adjustment to the REC comprises sending a Common Public Radio Interface, CPRI, message to the REC.

15. A Radio Equipment, RE, comprising:

a network interface configured to communicatively couple the RE to at least one Radio Equipment Controller, REC; and

circuitry configured to;

determine an over power subscription adjustment for one or more carriers based on one or more system parameters; and

provide the over power subscription adjustment to the at least one REC for the one or more carriers.

16. The RE of claim 15 wherein the circuitry is further configured to:

update the over power subscription adjustment for the one or more carriers based on current operating conditions; and

provide the over power subscription adjustment to the REC for the one or more carriers via the network interface.

17. The RE of any of claim 15 wherein the one or more system parameters comprises at least one of the group consisting of:

a number of active carriers served by the RE,

a Radio Access Type, RAT, of the active carriers served by the RE, and

a average carrier power utilization of the active carriers served by the RE.

18. The RE of claim 15 wherein being configured to determine the over power subscription adjustment for the one or more carriers comprises being configured to determine the over power subscription adjustment for the one or more carriers using a statistical process based on the one or more system parameters.

19. The RE of claim 15 wherein being configured to determine the over power subscription adjustment for the one or more carriers comprises being configured to determine the over power subscription adjustment for the one or more carriers using an Artificial Neural Network, ANN, based on the one or more system parameters.

20. The RE of claim 19 wherein the ANN is a Bayesian ANN.

21. The RE of claim 15 wherein the over power subscription adjustment for the one or more carriers comprises at least one of a baseband power adjustment and a Mean Power Limiting, MPL, timing adjustment.

22. The RE of claim 21 wherein being configured to determine the over power subscription adjustment for the one or more carriers comprises being configured to:

determine that a baseband power adjustment is needed for the one or more carriers;

in response to determining that the baseband power adjustment is needed, determine the baseband power adjustment for the one or more carriers;

determine that an MPL timing adjustment is needed for the one or more carriers; and

in response to determining that the MPL timing adjustment is needed, determine the MPL timing adjustment for the one or more carriers.

23. The RE of claim 22 wherein being configured to determine that the baseband power adjustment is needed and being configured to determine that the MPL timing adjustment is needed comprises being configured to:

determine a probability that the baseband power adjustment is needed and a probability that the MPL timing adjustment is needed;

in response to determining that the probability that the baseband power adjustment is needed is greater than the probability that the MPL timing adjustment is needed;

determine that the baseband power adjustment is needed; and

determine that the MPL timing adjustment is not needed; and

in response to determining that the probability that the baseband power adjustment is needed is not greater than the probability that the MPL timing adjustment is needed;

determine that the baseband power adjustment is not needed; and

determine that the MPL timing adjustment is needed.

24. The RE of claim 15 further configured to save the over power subscription adjustment for the one or more carriers.

25. The RE of claim 15 wherein the one or more carriers is a single carrier served by the RE.

26. The RE of claim 15 wherein the one or more carriers is more than one carrier served by the RE and the over power subscription adjustment applies to each of the more than one carrier.

27. The RE of claim 15 wherein being configured to provide the over power subscription adjustment to the REC comprises being configured to send a Common Public Radio Interface, CPRI, message to the REC via the network interface.

28. A Radio Equipment, RE, adapted to:

determine an over power subscription adjustment for one or more carriers based on one or more system parameters; and

provide the over power subscription adjustment to at least one Radio Equipment Controller, REC, for the one or more carriers.

29-32. -32. (canceled)