Method for energy control in a cellular radio system

• US 8,989,757 B2
• Filed: 02/16/2010
• Issued: 03/24/2015
• Est. Priority Date: 02/16/2010
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Veres, Andrs, Barta, Jzsef
• Primary Examiner(s): Siddiqui, Kashif
• Assistant Examiner(s): TRAN, MONG-THUY THI
• Application Number:
  US13/579,129
• Publication Number:
  US 20120329471A1
• Time in Patent Office: 1,862 Days
• Field of Search: 455/452.1, 455/453, 455/522, 455/574
• US Class Current: 455/452.1
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/343 taking into account loading or congestion level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Methods and devices enabling improved switch-on procedures during the reactivation of base stations already switched off to save power are provided. In accordance with one embodiment a method of activating a de-activated cell in a cellular radio system is provided. First measurements are collected from a number of user equipments connected to the cellular radio system. Based on the collected measurements a model for mapping a cell, the best cell, providing the least power increase in the cellular radio system when activated is constructed. When the traffic demand of the cellular radio system cannot be served using already activated cells it is determined to activate the cell that is mapped as the best cell to be activated. Hereby, the cells of a cellular radio system can be managed to maximally utilize the energy used in the system.

Claims

1. A method of activating a de-activated cell in a cellular radio system, the method comprising:

collecting measurements from a number of user equipment connected to the cellular radio system;

constructing a model for mapping a first cell generating a least power increase in the cellular radio system to be activated based on the collected measurements;

determining to activate the cell mapped as the first cell to be activated when traffic demand of the cellular radio system cannot be served using already activated cells, wherein activation of the cell mapped as the first cell decreases the overall energy consumption of the cellular radio system; and

collecting and storing measured power consumptions of base stations at given loads;

wherein the measured power consumptions of the base stations at the given loads are used as input data when determining to activate the cell mapped as the first cell to be activated.

2. The method of claim 1 wherein the collected measurements comprise one or more received signal powers or one or more timing advances.

3. The method of claim 1 wherein the collected measurements comprise one or more inter radio access technology measurements or one or more positioning measurements.

4. The method of claim 1 wherein constructing the model comprises automatically constructing the model for mapping the first cell to be activated based on the collected measurements using machine learning.

5. The method of claim 1 further comprising ordering additional measurements to be performed by one or many user equipment.

6. A network device for activating a de-activated cell in a cellular radio system, the network device comprising a processor configured to:

collect measurements from a number of user equipment connected to the cellular radio system;

construct a model for mapping a first cell generating a least power increase in the cellular radio system to be activated based on the collected measurements;

determine to activate the cell mapped as the first cell to be activated when traffic demand of the cellular radio system cannot be served using already activated cells, wherein activation of the cell mapped as the first cell decreases the overall energy consumption of the cellular radio system; and

collect and store measured power consumptions of base stations at given loads;

wherein the measured power consumptions of base stations at given loads are used as input data when determining to activate the cell that is mapped as the first cell to be activated.

7. The device of claim 6 wherein the measurements comprise one or more received signal powers or one or more timing advances.

8. The device of claim 6 wherein the measurements comprise one or more inter radio access technology measurements or one or more positioning measurements.

9. The device of claim 6 wherein the processor is further configured to automatically perform the construction of the model for mapping the first cell to be activated based on the collected measurements using machine learning.

10. The device of claim 6 wherein the processor is further configured to order additional measurements to be performed by one or many user equipment.