METHOD FOR REPORTING CHANNEL STATE INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

• US 20140071848A1
• Filed: 04/20/2012
• Published: 03/13/2014
• Est. Priority Date: 04/20/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sungho, Chun, Jinyoung, Kim, Kitae, Kim, Sunam, Kang, Jiwon, Ihm, Binchul
• Granted Patent: US 9,544,803 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 25/03891 Spatial equalizers MIMO diversity systems H04B7/0413
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0046 Determination of how many bits are transmitted on different sub-channels
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for reporting channel state information (CSI), wherein the method in which a terminal reports CSI comprises the steps of: receiving configuration information for periodic CSI reporting from a base station; and transmitting CSI information for each of a plurality of sets of CSI reports based on said configuration information to said base station via a physical uplink control channel (PUCCH). Said plurality of sets of CSI reports contains one or more mutually different subframes.

Claims

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

receiving a configuration information for a periodic reporting of CSI from a base station; and

transmitting a CSI information on each of a plurality of CSI report sets according to the configuration information to the base station on PUCCH (physical uplink control channel),

wherein a plurality of the CSI report sets include one or more different subframes.

2. The method according to claim 1, wherein coding for transmitting the CSI information on each of a plurality of the CSI report sets to the base station follows a joint coding scheme of coding the CSI informations into prescribed transmission bits by synthesizing the CSI informations together.

3. The method according to claim 1, wherein coding for transmitting the CSI information on each of a plurality of the CSI report sets to the base station is performed in a manner of synthesizing the CSI informations by coding the CSI informations into the same predetermined bits and then coding the synthesized CSI information into prescribed transmission bits.

4. The method according to claim 1, wherein a plurality of the CSI report sets comprise a restricted subset including subframes respectively having different inter-cell interferences.

5. A method for receiving a channel state information (CSI), at a base station in a wireless communication system, the method comprising:

transmitting a plurality of configuration informations for a periodic reporting of CSI to a user equipment; and

receiving a CSI information on each of a plurality of CSI report sets according to the configuration information from the user equipment on PUCCH (physical uplink control channel),

wherein a plurality of the CSI report sets include one or more different subframes.

6. The method according to claim 5, wherein coding for receiving the CSI information on each of a plurality of the CSI report sets from the user equipment follows a joint coding scheme of coding the CSI informations into prescribed transmission bits by synthesizing the CSI informations together.

7. The method according to claim 5, wherein coding for receiving the CSI information on each of a plurality of the CSI report sets from the user equipment is performed in a manner of synthesizing the CSI informations by coding the CSI informations into the same predetermined bits and then coding the synthesized CSI information into prescribed transmission bits.

8. The method according to claim 5, wherein a plurality of the CSI report sets comprise a restricted subset including subframes respectively having different inter-cell interferences.

9. A user equipment configured to perform a channel state information (CSI) reporting in a wireless communication system, the user equipment comprising:

a radio frequency (RF) unit; and

a processor configured to control the radio frequency unit to receive a configuration information for a periodic reporting of the CSI from a base station, and to control the radio frequency unit to transmit a CSI information on each of a plurality of CSI report sets according to the configuration information to the base station on PUCCH (physical uplink control channel),

wherein a plurality of the CSI report sets include one or more different subframes.

10. The user equipment according to claim 9, wherein the processor performs coding for transmitting the CSI information on each of a plurality of the CSI report sets to the base station by following a joint coding scheme of coding the CSI informations into prescribed transmission bits by synthesizing the CSI informations together.

11. The user equipment according to claim 9, wherein the processor performs coding for transmitting the CSI information on each of a plurality of the CSI report sets to the base station in a manner of synthesizing the CSI informations by coding the CSI informations into the same predetermined bits and then coding the synthesized CSI information into prescribed transmission bits.

12. The user equipment according to claim 9, wherein a plurality of the CSI report sets comprise a restricted subset including subframes respectively having different inter-cell interferences.

13. A base station configured to receive a channel state information (CSI) in a wireless communication system, the base station comprising:

a radio frequency (RF) unit; and

a processor configured to control the radio frequency unit to transmit a plurality of configuration informations for a periodic reporting of CSI to a user equipment, and to control the radio frequency unit to receive a CSI information on each of a plurality of CSI report sets according to the configuration information from the user equipment on PUCCH (physical uplink control channel),

wherein a plurality of the CSI report sets include one or more different subframes.

14. The base station according to claim 13, wherein the processor performs coding for receiving the CSI information on each of a plurality of the CSI report sets from the user equipment by following a joint coding scheme of coding the CSI informations into prescribed transmission bits by synthesizing the CSI informations together.

15. The base station of claim 13, wherein the processor performs coding for receiving the CSI information on each of a plurality of the CSI report sets from the user equipment in a manner of synthesizing the CSI informations by coding the CSI informations into the same predetermined bits and then coding the synthesized CSI information into prescribed transmission bits.