METHOD AND APPARATUS FOR PERFORMING MEASUREMENT IN A WIRELESS COMMUNICATION SYSTEM

• US 20120327802A1
• Filed: 03/25/2011
• Published: 12/27/2012
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jung, Sung Hoon, Chun, Sung Duck, Yi, Seung June, Lee, Young Dae, Park, Sung Jun
• Granted Patent: US 8,929,237 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0094 Definition of hand-off measurement parameters

Abstract

A method and an apparatus for performing measurement in a wireless communication system is provided. A user equipment determines a reference quality value based on quality values of a plurality of serving cells; determines a management object by comparing the reference quality value with a plurality of

Claims

1. A method for performing measurement by a user equipment (UE) in a wireless communication system, the method comprising:

determining a reference quality value based on quality values of a plurality of serving cells;

determining a management object by comparing the reference quality value with a plurality of threshold values; and

performing measurement on the management object.

2. The method of claim 1, wherein the plurality of threshold values include a first threshold value and a second threshold value.

3. The method of claim 2, wherein

when the reference quality value is greater than the first threshold value, a first management object is determined as the management object,

when the reference quality value is between the first threshold value and the second threshold value, a second management object is determined as the management object, and

when the reference quality value is smaller than the first threshold value, a third management object is determined as the management object.

4. The method of claim 3, wherein the first management object includes the plurality of serving cells.

5. The method of claim 4, wherein the second management object includes the plurality of serving cells and neighbor cells on a plurality of serving frequencies corresponding to the plurality of serving cells.

6. The method of claim 5, wherein the third management object includes the plurality of serving cells, neighbor cells on a plurality of serving frequencies corresponding to the plurality of serving cells, and cells on non-serving frequencies.

7. The method of claim 1, wherein the reference quality value is a quality value of one serving cell selected from among the plurality of serving cells.

8. The method of claim 7, wherein the reference quality value is a quality value of a primary cell.

9. The method of claim 7, wherein the reference quality value is the best quality value among quality values of the plurality of serving cells.

10. The method of claim 7, wherein the reference quality value is the worst quality value among quality values of the plurality of serving cells.

11. The method of claim 1, wherein the reference quality value is an average value of quality values of the plurality of serving cells.

12. The method of claim 1, wherein the UE is in an RRC connected state.

13. The method of claim 1, further comprising:

receiving information regarding the plurality of threshold values from a base station.

14. An apparatus for performing measurement in a wireless communication system, the apparatus comprising:

a radio frequency (RF) unit configured to transmit and receive a radio signal; and

a processor connected to the RF unit, wherein the processor is configured to;

determine a reference quality value based on quality values of a plurality of serving cells,

determine a management object by comparing the reference quality value with a plurality of threshold values, and

perform measurement on the management object.

15. The apparatus of claim 14, wherein the plurality of threshold values include a first threshold value and a second threshold value, and

when the reference quality value is greater than the first threshold value, the processor determines a first management object as the management object,

when the reference quality value is between the first threshold value and the second threshold value, the processor determines a second management object as the management object, and

when the reference quality value is smaller than the first threshold value, the processor determines a third management object as the management object.