METHOD FOR REPORTING THE RESULTS OF SPECIFIC REFERENCE-CELL-BASED QUALITY MEASUREMENT IN A MOBILE COMMUNICATION SYSTEM USING CARRIER AGGREGATION, AND APPARATUS FOR THE METHOD

• US 20150009854A1
• Filed: 09/22/2014
• Published: 01/08/2015
• Est. Priority Date: 01/21/2010
• 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 9,161,271 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The present invention relates to a method in which a terminal reports the results of quality measurement based on a specific reference cell from among a plurality of serving cells for the terminal in a mobile communication system using carrier aggregation. The present invention also relates to a terminal apparatus for the method. For this purpose, the terminal receives measurement configuration information from a network, performs a quality measurement in accordance with the received measurement configuration information, determines whether or not a report criterion based on a specific reference cell from among the plurality of cells for the terminal is met in accordance with the measurement result, and, if the report criterion based on the specific reference cell is met, sends a report message, including the measurement results and an indicator that indicates the specific reference cell, to the network.

Claims

1. A method of reporting a cell measurement by a user equipment (UE) in a mobile communication system, the method comprising:

transmitting a first measurement report for a first type cell according to a reporting criterion configured in the UE;

configuring a second type cell in addition to the first type cell which is currently configured in the UE;

reporting a second measurement report for at least one of a first type cell or a second type cell according to the reporting criterion,

wherein the reporting criterion comprises a predetermined event which is applied to the first type cell only regardless of whether the second type cell has been configured in the UE.

2. The method of claim 1, wherein the reporting criterion comprises at least one event which can be applied to both of the first type cell and the second type cell.

3. The method of claim 1, wherein the first type cell is a primary cell (PCell) which is always activated and the second type cell is a secondary cell (SCell) which is can be deactivated.

4. The method of claim 1, wherein the second measurement report contains cell ID information only if the second measurement report is related to the second type cell.

5. The method of claim 1, wherein the reporting criterion comprises at least one of:

a first event in which a serving cell measurement becomes better than a first threshold;

a second event in which the serving cell measurement becomes worse than a second threshold;

a third event in which a neighbor cell measurement becomes offset better than the serving cell measurement;

a forth event in which the neighbor cell measurement becomes better than a third threshold;

or

a fifth event in which the serving cell measurement becomes worse than a forth threshold and the neighbor cell measurement becomes better than a fifth threshold.

6. The method of claim 5, wherein the predetermined event corresponds to the third event or the fifth event.

7. The method of claim 1, further comprising:

receiving measurement configuration information including information on the reporting criterion;

measuring the first type cell or the second type cell according to the received measurement configuration information; and

checking whether a result of the measurement satisfies the reporting criterion.

8. The method of claim 7, wherein measurement configuration information includes information on a measurement object on which the measurement to be performed and the measurement object comprises at least one of an inter-frequency measurement or an intra-frequency measurement.

9. A non-transitory computer readable medium recorded thereon a program for executing the method of claim 1.

10. A user equipment (UE) for reporting a cell measurement in a mobile communication system, the UE comprising:

a radio frequency (RF) module to receive or transmit a radio frequency signal;

a processor controls the RF module for;

transmitting a first measurement report for a first type cell according to a reporting criterion configured in the UE;

configuring a second type cell in addition to the first type cell which is currently configured in the UE;

reporting a second measurement report for at least one of a first type cell or a second type cell according to the reporting criterion,

wherein the reporting criterion comprises a predetermined event which is applied to the first type cell only regardless of whether the second type cell has been configured in the UE.

11. The method of claim 10, wherein the reporting criterion comprises at least one event which is available for both of the first type cell and the second type cell.

12. The method of claim 10, wherein the first type cell is a primary cell which is always activated and the second type cell is a secondary cell which is can be deactivated.

13. The method of claim 10, wherein the second measurement report contains cell ID information only if the second measurement report is related to the second type cell.

14. The method of claim 10, wherein the reporting criterion comprises at least one of:

a first event in which a serving cell becomes better than a first threshold;

a second event in which the serving cell becomes worse than a second threshold;

a third event in which a neighbor cell becomes offset better than the serving cell;

a forth event in which the neighbor cell becomes better than a third threshold;

or

a fifth event in which the serving cell becomes worse than a forth threshold and the neighbor cell becomes better than a fifth threshold.

15. The method of claim 14, wherein the predetermined event corresponds to the third event or the fifth event.

16. The method of claim 10, wherein the processor controls the RF module for:

receiving measurement configuration information including information on the reporting criterion;

measuring the first type cell or the second type cell according to the received measurement configuration information; and

checking whether a result of the measurement satisfies the reporting criterion.

17. The method of claim 16, wherein measurement configuration information includes information on a measurement object on which the measurement to be performed and the measurement object comprises at least one of an inter-frequency measurement or an intra-frequency measurement.