Method and device for transmitting control information in wireless communication system

Patent metadata

Field	Value
Publication number	US-9155080-B2
Application number	US-201213982731-A
Country	US
Kind code	B2
Filing date	Mar 5, 2012
Priority date	Mar 3, 2011
Publication date	Oct 6, 2015
Grant date	Oct 6, 2015

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.

First claim

The invention claimed is:

1. A method for reporting channel state information (CSI) at a User Equipment (UE) 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, if the PDCCH signal includes a 1-bit subframe subset indicator, at least one of the first CSI and the second CSI is calculated based on a subframe subset indicated by the subframe subset indicator.

2. The method according to claim 1 , wherein, if the PDCCH signal does not include a 1-bit subframe subset indicator and the predetermined subframe belongs to different subframe subsets in the CSI report set, the first CSI and the second CSI are calculated based on a 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, if the PDCCH signal does not include a 1-bit subframe subset indicator and 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, if the PDCCH signal does not include a 1-bit subframe subset indicator and 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.

5. The method according to claim 1 ,
wherein, if the PDCCH signal does not include a 1-bit subframe subset indicator and 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.

6. A communication device configured to report channel state information (CSI) in a wireless communication system, the communication device 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, and
wherein, if the PDCCH signal includes a 1-bit subframe subset indicator, at least one of the first CSI and the second CSI is calculated based on a subframe subset indicated by the subframe subset indicator.

7. The communication device according to claim 6 , wherein, if the PDCCH signal does not include a 1-bit subframe subset indicator and the predetermined subframe belongs to different subframe subsets in the CSI report set, the first CSI and the second CSI are calculated based on a same subframe subset as a subframe subset to which the predetermined subframe belongs in a serving cell in which the PDCCH signal is received.

8. The communication device according to claim 6 ,
wherein, if the PDCCH signal does not include a 1-bit subframe subset indicator and 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.

9. The communication device according to claim 6 , wherein, if the PDCCH signal does not include a 1-bit subframe subset indicator and 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.

10. The communication device according to claim 6 ,
wherein, if the PDCCH signal does not include a 1-bit subframe subset indicator and 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.

11. A method for reporting channel state information (CSI) at a User Equipment (UE) 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 CSI 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 the aperiodic CSI report including a first CSI of the first serving cell or a second CSI of the second serving cell via a physical uplink shared channel (PUSCH) signal,
wherein if the PDCCH signal includes an indicator field, at least one of the first CSI and the second CSI is calculated based on a CSI subset indicated by the indicator field.

Assignees

• Kim Jinmin
• Han Seunghee
• Lee Hyunwoo
• Lg Electronics Inc

Inventors

• Kim Jinmin
• Han Seunghee
• Lee Hyunwoo

Classifications

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04L27/2636

  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 title

• H04L1/0073

  Special arrangements for feedback channel · CPC title

• H04L27/2633 Primary

  using partial FFTs · CPC title

• H04L1/0027

  Scheduling of signalling, e.g. occurrence thereof · CPC title