Optimized energy consumption management in wireless base stations

• US 8,660,547 B2
• Filed: 11/30/2011
• Issued: 02/25/2014
• Est. Priority Date: 11/30/2011
• Status: Active Grant

• Current Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Marin, James S.
• Primary Examiner(s): DOAN, PHUOC HUU
• Application Number:
  US13/307,595
• Publication Number:
  US 20130137411A1
• Time in Patent Office: 818 Days
• Field of Search: 455/418, 455/574, 455/41.2, 370/252, 370/400, 370/338
• US Class Current: 455/418
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method, apparatus and a non-transitory computer readable medium include comparing two or more access points in a wireless communication network based upon one or more scenarios to minimize energy consumption, identifying one or more energy conservation constraints in the wireless communication network and controlling each of the two or more access points by selectively distributing traffic based upon the one or more energy conservation constraints.

Claims

1. A method comprising:

comparing input information into two or more access points, the two or more access points each having respective controllers being operated synchronously with each other, the two or more access points having overlapping radio coverage to at least one user equipment in a wireless communication network, the input information being compared based upon one or more scenarios operable to minimize energy consumption;

identifying one or more energy conservation constraints in the wireless communication network based on the comparison of the input information; and

controlling each of the two or more access points using said respective synchronous controllers to selectively distribute traffic through at least one of the two or more access points based upon the one or more energy conservation constraints.

2. The method in claim 1, where a plurality of distributed power controllers determines whether to enable or disable at least one of the two or more access points to selectively distribute traffic through said at least one of the two or more access points based upon the one or more energy conservation constraints.

3. The method in claim 2, where at least one distributed power controller powers on or off one or more access points based upon at least a traffic load, a traffic capacity, an energy savings, or one or more operational constraints.

4. The method in claim 3, where the one or more operational constraints comprise:

a minimum quality of service;

a time of day;

a calendar date; and

a probability of traffic routing failure.

5. The method in claim 3, where a distributed synchronous traffic controller routes traffic to one or more enabled access points.

6. The method of claim 5, where a radio resource of each of the two or more access points acquires state information regarding traffic rates and resource capacity of one another, and the distributed synchronous power controller and distributed synchronous traffic controller determine which one of the two or more access points to process traffic based upon the state information.

7. The method of claim 6, wherein one or more access points are not required to exchange controller results to acquire the state information.

8. The method of claim 5, where the distributed traffic controller routes traffic to any one of the one or more access points that are enabled, and clears traffic based on the operational constraints.

9. The method of claim 8, where traffic routing further comprises:

handing off traffic to a remote wireless communication network; and

simulcasting to the remote wireless communication network.

10. The method of claim 1, where the one or more access points comprise:

a transmitter of a channel of a sector of a wireless communication base station;

a transmitter of a group of channels of a sector of a wireless communication base station;

a sector of a wireless communication base station;

or

a wireless communications base station.

21. The method in claim 2, where a first distributed power controller of the plurality of distributed power controllers outputs a first control decision signal to enable or disable a respective access point of the two or more access points, a second distributed power controller of the plurality of distributed power controllers outputs a second control decision signal to enable or disable another respective access point of the two or more access points, the first distributed power controller outputs a copy of the second control decision signal and the second distributed power controller outputs a copy of the first control decision signal so that control decisions output by the first distributed power controller and the second distributed power controller are the same.

11. An apparatus, comprising:

a processor; and

a memory including computer program code, where the memory and computer program code are configured, with the processor, to cause the apparatus to;

compare input information into two or more access points, the two or more access points each having respective controllers being operated synchronously with each other, the two or more access point having overlapping radio coverage to at least one user equipment in a wireless communication network, the input information being compared based upon one or more scenarios operable to minimize energy consumption;

identify one or more energy conservation constraints in the wireless communication network based on the comparison of input information; and

control each of the two or more access points using said respective synchronous controllers to selectively distribute traffic through at least one of the two or more access points based upon the one or more energy conservation constraints.

12. The apparatus in claim 11, further comprising at least one distributed power controller configured to determine whether to enable or disable at least one of the two or more access points to selectively distribute traffic through said at least one of the two or more access points based upon the one or more energy conservation constraints.

13. The apparatus in claim 12, where the distributed power controller powers on or off one or more access points based upon at least a traffic load, a traffic capacity, an energy savings or one or more operational constraint.

14. The apparatus in claim 13, where the one or more operational constraints comprise:

a minimum quality of service;

a time of day;

a calendar date; and

a probability of traffic routing failure.

15. The apparatus in claim 11, further comprising:

a distributed synchronous traffic controller configured to route traffic to one or more enabled access points.

16. The apparatus in claim 15, where a radio resource of each of the two or more access points is informed of traffic rates and resource capacity of one another and the distributed synchronous power controller and distributed synchronous traffic controller determine which one of the two or more access points to process traffic based upon the traffic rates and resource capacity.

17. The apparatus in claim 15, where the distributed traffic controller routes traffic to any one of the one or more access points that are enabled and clears traffic based on the operational constraints.

18. The apparatus in claim 17, where traffic routing further comprises:

handing off traffic to a remote wireless communication network; and

simulcasting to the remote wireless communication network.

19. The apparatus in claim 11, where the one or more access points comprise:

a transmitter of a channel of a sector of a wireless communication base station;

a transmitter of a group of channels of a sector of a wireless communication base station;

a sector of a wireless communication base station;

or

a wireless communications base station.

20. A non-transitory computer readable medium storing a program of machine-readable instructions executable by a digital processing apparatus of a computer system to perform operations for controlling computer system, said actions comprising:

comparing input information into two or more access points, the two or more access points each having respective controllers being operated synchronously with each other, the two or more access points having overlapping radio coverage to at least one user equipment in a wireless communication network, the input information being compared based upon one or more scenarios operable to minimize energy consumption;

identifying one or more energy conservation constraints in the wireless communication network based on the comparison of the input information; and

controlling each two or more access points using said respective synchronous controllers to selectively distribute traffic through at least one of the two or more access points based upon the one or more energy conservation constrains constraints.