METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20130315185A1
• Filed: 03/05/2012
• Published: 11/28/2013
• Est. Priority Date: 03/03/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jinmin, Han, Seunghee, Lee, Hyunwoo
• Granted Patent: US 9,155,080 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/0073 Special arrangements for feedback channel
• CPC Class Codes: H04L 27/2633 using partial FFTs
• CPC Class Codes: H04L 27/2636 with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for executing a CSI report in a wireless communication system, and a device therefor, the method comprising the steps of: composing a CSI report set having a first serving cell and a second serving cell, wherein each of the serving cells includes a plurality of independently consisting subframe subsets; receiving, at the predetermined subframe, a PDCCH signal requesting an aperiodic CIS report on the CSI report set; transmitting a PUSCH signal including a first CSI on the corresponding subframe subset in the first serving cell and a second CSI on the corresponding subframe subset in the second serving cell, wherein the first CSI and the second CSI are calculated on the basis of the subframe subset given by a predetermined method.

Claims

1. A method for reporting channel state information (CSI) in a wireless communication system, the method comprising:

configuring a CSI report set including a first serving cell and a second serving cell, wherein each serving cell comprises a plurality of independently configured subframe subsets;

receiving, in a predetermined subframe, a physical downlink control channel (PDCCH) signal requesting an aperiodic CSI report on the CSI report set; and

transmitting a physical uplink shared channel (PUSCH) signal including first CSI on the corresponding subframe subset in the first serving cell and second CSI on the corresponding subframe subset in the second serving cell,

wherein the first CSI and the second CSI are calculated on the basis of a subframe subset given by a predetermined method.

2. The method according to claim 1, wherein, when the predetermined subframe belongs to different subframe subsets in the CSI report set, the first CSI and the second CSI are calculated based on the same subframe subset as a subframe subset to which the predetermined subframe belongs in a serving cell in which the PDCCH signal is received.

3. The method according to claim 1, wherein the plurality of subframe subsets includes two subframe subsets,

wherein, when the PDCCH signal is received in the first serving cell, the first CSI is calculated based on a subframe subset to which the predetermined subframe belongs in the first serving cell and the second CSI is calculated based on a subframe subset different from the subframe subset to which the predetermined subframe belongs in the first serving cell.

4. The method according to claim 1, wherein the PDCCH signal includes a 1-bit subframe subset indicator, and at least one of the first CSI and the second CSI is calculated based on a subframe subset indicated by the subframe subset indicator.

5. The method according to claim 4, wherein, when the PDCCH signal is received in the first serving cell, the first CSI is calculated based on a subframe subset to which the predetermined subframe belongs in the first serving cell and the second CSI is calculated based on the subframe subset indicated by the subframe subset indicator.

6. The method according to claim 1, wherein the plurality of subframe subsets includes two subframe subsets,

wherein, when the PDCCH signal is received in the first serving cell, the first CSI is calculated based on a subframe subset to which the predetermined subframe belongs in the first serving cell and the second CSI is calculated based on a subframe subset different from a previously reported subframe subset.

7. A communication device configured to report channel state information (CSI) in a wireless communication system, comprising:

a radio frequency (RF) unit; and

a processor,

wherein the processor is configured to configure a CSI report set including a first serving cell and a second serving cell, each serving cell including a plurality of independently configured subframe subsets, to receive, in a predetermined subframe, a physical downlink control channel (PDCCH) signal requesting an aperiodic CIS report on the CSI report set, and to transmit a physical uplink shared channel (PUSCH) signal including first CSI on the corresponding subframe subset in the first serving cell and second CSI on the corresponding subframe subset in the second serving cell,

wherein the first CSI and the second CSI are calculated on the basis of a subframe subset given by a predetermined method.

8. The communication device according to claim 7, wherein, when the predetermined subframe belongs to different subframe subsets in the CSI report set, the first CSI and the second CSI are calculated based on the same subframe subset as a subframe subset to which the predetermined subframe belongs in a serving cell in which the PDCCH signal is received.

9. The communication device according to claim 7, wherein the plurality of subframe subsets includes two subframe subsets,

wherein, when the PDCCH signal is received in the first serving cell, the first CSI is calculated based on a subframe subset to which the predetermined subframe belongs in the first serving cell and the second CSI is calculated based on a subframe subset different from the subframe subset to which the predetermined subframe belongs in the first serving cell.

10. The communication device according to claim 7, wherein the PDCCH signal includes a 1-bit subframe subset indicator, and at least one of the first CSI and the second CSI is calculated based on a subframe subset indicated by the subframe subset indicator.

11. The communication device according to claim 10, wherein, when the PDCCH signal is received in the first serving cell, the first CSI is calculated based on a subframe subset to which the predetermined subframe belongs in the first serving cell and the second CSI is calculated based on the subframe subset indicated by the subframe subset indicator.

12. The communication device according to claim 7, wherein the plurality of subframe subsets includes two subframe subsets,

wherein, when the PDCCH signal is received in the first serving cell, the first CSI is calculated based on a subframe subset to which the predetermined subframe belongs in the first serving cell and the second CSI is calculated based on a subframe subset different from a previously reported subframe subset