METHOD FOR COMMUNICATION BASED ON MOBILITY EVALUATION IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME

• US 20140031039A1
• Filed: 04/04/2012
• Published: 01/30/2014
• Est. Priority Date: 04/04/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jung, Sung Hoon, Yi, Seung June, Lee, Young Dae, Chun, Sung Duck, Park, Sung Jun
• Granted Patent: US 9,078,150 B2
• Time in Patent Office: Days
• US Class Current: 455/436
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 36/04 Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 36/22 for handling the traffic

Abstract

A method for communication based on mobility evaluation in a wireless communication system is provided. The method includes: receiving evaluation basis information from a network, the evaluation basis information basis information comprising an offset value for mobility evaluation and a domain condition; determining whether the domain condition is satisfied; performing the mobility evaluation for at least one neighbor cell based on the offset value, if the domain condition is satisfied; and selecting a cell among the at least one neighbor cell as a mobility target cell, if a result of the mobility evaluation satisfies a predetermined criterion.

Claims

1. A method for communication based on mobility evaluation in a wireless communication system, the method comprising:

receiving, by a user equipment (UE), evaluation basis information from a network, the evaluation basis information comprising an offset value for mobility evaluation and a domain condition

determining, by the UE, whether the domain condition is satisfied;

performing, by the UE, the mobility evaluation for at least one neighbor cell based on the offset value, if the domain condition is satisfied; and

selecting, by the UE, a cell among the at least one neighbor cell as a mobility target cell, if a result of the mobility evaluation satisfies a predetermined criterion.

2. The method of claim 1, wherein the domain condition indicates a geographical area.

3. The method of claim 2, further comprising

receiving, by the UE, positioning information which indicates a location of the UE.

4. The method of claim 3, wherein the step of the determining whether the domain condition is satisfied includes, if the location of the UE is located in the geographical area, determining that the domain condition is satisfied.

5. The method of claim 1, wherein the domain condition indicates a threshold for a serving cell.

6. The method of claim 5, wherein the step of the determining whether the domain condition is satisfied includes, if a measurement result for the serving cell is less than the threshold, determining that the domain condition is satisfied.

7. The method of claim 1, wherein the domain condition indicates a threshold for a neighbor cell.

8. The method of claim 7, wherein the step of the determining whether the domain condition is satisfied includes, if a measurement result for the neighbor cell is greater than the threshold, determining that the domain condition is satisfied.

9. The method of claim 1, wherein the evaluation basis information further includes a limit cell list.

10. The method of claim 9, wherein the at least one neighbor cell is included in the limit cell list.

11. The method of claim 1, wherein the evaluation basis information further includes a limit frequency list.

12. The method of claim 11, wherein at least one frequency in which the at least one neighbor cell operates is included in the limit frequency list.

13. The method of claim 1, further comprising performing, by the UE, a cell reselection with the cell, if the UE operates in an RRC_IDLE mode.

14. The method of claim 1, further comprising transmitting, by the UE, a measurement report of the cell to a serving cell, if the UE operates in an RRC_CONNECTED mode.

15. A wireless device comprising:

a radio frequency (RF) unit transmitting and receiving a radio signal; and

a processor operably coupled to the RF unit, wherein the processor is configured to;

receive estimation basis information from a network, the evaluation basis information comprising an offset value for mobility evaluation and a domain condition;

determine whether the domain condition is satisfied;

perform the mobility evaluation for at least one neighbor cell based on the offset value, if the domain condition is satisfied; and

select a cell among the at least one neighbor cell as a mobility target cell, if a result of the mobility evaluation satisfies a predetermined criterion.

16. A method for communication based on mobility evaluation in a wireless communication system, the method comprising:

receiving, by a user equipment (UE), evaluation basis information from a network, the evaluation basis information comprising a domain condition;

determining, by the UE, whether a domain condition is satisfied;

measuring, by the UE, at least one neighbor cell, when the domain condition is satisfied;

performing, by the UE, the mobility evaluation for the neighbor cell based on the offset value; and

selecting, by the UE, a cell among the at least one neighbor cell as a mobility target cell, if a result of the mobility evaluation satisfies a predetermined criterion.