METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20130182676A1
• Filed: 09/16/2011
• Published: 07/18/2013
• Est. Priority Date: 09/16/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Han, Seunghee, Chung, Jaehoon, Lee, Hyunwoo
• Granted Patent: US 9,001,768 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

The present invention relates to a wireless communication system supporting carrier aggregation (CA). The present invention provides a method for allowing a terminal to transmit control information to a base station in a wireless communication system, and the method comprises receiving from said base station at least one physical downlink control channel (PDCCH) and one physical downlink shared channel (PDSCH) through at least one serving cell that is configured in said terminal; and transmitting to said base station first control information which has bundled at least a portion of the control information for said PDCCH reception or the PDSCH reception that is indicated by said PDCCHs, wherein said first control information is transmitted using a physical uplink control channel (PUCCH) resource corresponding to a second control information, and said second control information can be related to a PDCCH which was last detected by said terminal among said received PDCCHs.

Claims

1. A method of transmitting control information from a terminal to a base station in a wireless communication system supporting a plurality of serving cells, the method comprising:

receiving at least one of physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) through at least one serving cell configured in the terminal from the base station; and

transmitting, to the base station, first control information resulting from performing a bundling on at least a portion of control information on reception of PDCCH or reception of PDSCH indicated by the PDCCH,

wherein the first control information is transmitted using physical uplink control channel (PUCCH) resource corresponding to second control information according to a predetermined rule, and

wherein the second control information is associated with a PDCCH last detected by the terminal among the received PDCCH.

2. The method according to claim 1, wherein the first control information is acknowledgement (ACK) or negative acknowledgement (NACK) information, and the second control information is downlink assignment index (DAI) information last detected by the terminal from at least one DAI information transmitted through the PDCCH, and wherein the at least one DAI information indicates an assignment order of at least one of the received PDCCH and the received PDSCH.

3. The method according to claim 1, wherein if the PDCCH last detected by the terminal is included in a primary cell (PCell) of the at least one serving cell,

PUCCH resource corresponding to the second control information is determined using at least one control channel element (CCE) index configuring the PDCCH last detected by the terminal.

4. The method according to claim 3, wherein, if the PDCCH last detected by the terminal is included in a secondary cell (SCell) of the at least one serving cell, the PUCCH resource corresponding to the second control information is determined using assignment resource indicator (ARI) information received from the base station.

5. The method according to claim 4, wherein the ARI information includes PUCCH resource information corresponding to the second control information, parameter information for determining the PUCCH resource corresponding to the second control information, or offset information of the parameter.

6. The method according to claim 3, wherein if the PDCCH last detected by the terminal is included in a secondary cell (SCell) of the at least one serving cell, the PUCCH resource corresponding to the second control information is configured by the base station in advance through RRC signaling.

7. The method according to claim 1, wherein information about the PUCCH resource corresponding to the second control information is configured by the base station in advance through RRC signaling.

8. The method according to claim 1, wherein the bundling is full bundling.

9. The method according to claim 1, wherein:

the PDCCH carries one or more transport blocks or indicates a PDSCH carrying one or more transport blocks, and

the first control information and the second control information include information about one or more transport blocks included in the PDCCH or the PDSCH indicated by the PDCCH.

10. The method according to claim 9, wherein the first control information includes information about a maximum number of transport blocks carried by the PDCCH or the PDSCH indicated by the PDCCH, and

if the number of transport blocks carried by the PDCCH or the PDSCH indicated by the PDCCH is less than the maximum number of transport blocks,

the first control information of transport blocks excluding the transport blocks actually carried by the PDCCH or the PDSCH indicated by the PDCCH among the maximum number of transport blocks carried by the PDCCH or the PDSCH indicated by the PDCCH is negative acknowledgement (NACK) information.

11. The method according to claim 9, wherein the first control information includes information about a maximum number of transport blocks carried by the PDCCH or the PDSCH indicated by the PDCCH, and

if the number of transport blocks carried by the PDCCH or the PDSCH indicated by the PDCCH is less than the maximum number of transport blocks,

the first control information of transport blocks excluding the transport blocks actually carried by the PDCCH or the PDSCH indicated by the PDCCH among the maximum number of transport blocks carried by the PDCCH or the PDSCH indicated by the PDCCH is equal to the first control information of the actually carried transport blocks.

12. A method of, at a base station, receiving control information from a terminal in a wireless communication system supporting a plurality of serving cells, the method comprising:

transmitting, to the terminal, at least one of physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) through at least one serving cell configured in the terminal; and

receiving first control information resulting from performing a bundling on at least a portion of control information on transmission of PDCCH or transmission of PDSCH indicated by the PDCCH,

wherein the first control information is received using physical uplink control channel (PUCCH) resource corresponding to second control information according to a predetermined rule, and

wherein the second control information is associated with a PDCCH last detected by the terminal among the received PDCCH.

13. The method according to claim 12, wherein the first control information is acknowledgement (ACK) or negative acknowledgement (NACK) information, and the second control information is downlink assignment index (DAI) information last detected by the terminal from at least one of DAI information transmitted through the PDCCH, and wherein the at least one DAI information indicates an assignment order of at least one of the received PDCCH and the received PDSCH.

14. A terminal for transmitting control information to a base station in a wireless communication system supporting a plurality of serving cells, the terminal comprising:

a receiver for receiving at least one of physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) through at least one serving cell configured in the terminal from the base station;

a transmitter for transmitting, to the base station, first control information resulting from performing a bundling on at least a portion of control information on reception of PDCCH or reception of PDSCH indicated by the PDCCH; and

a processor for controlling transmission of the first control information to the base station using physical uplink control channel (PUCCH) resource corresponding to second control information according to a predetermined rule,

wherein the second control information is associated with a PDCCH last detected by the terminal among the received PDCCH.

15. The terminal according to claim 14, wherein the first control information is acknowledgement (ACK) or negative acknowledgement (NACK) information, and the second control information is downlink assignment index (DAI) information last detected by the terminal from at least one DAI information transmitted through the PDCCH, and wherein the at least one DAI information indicates an assignment order of at least one of the received PDCCH and the received PDSCH.

16. The terminal according to claim 14, wherein if the PDCCH last detected by the terminal is included in a primary cell (PCell) of the at least one serving cell,

PUCCH resource corresponding to the second control information is determined using at least one control channel element (CCE) index configuring the PDCCH last detected by the terminal.

17. The terminal according to claim 16, wherein, if the PDCCH last detected by the terminal is included in a secondary cell (SCell) of the at least one serving cell, the PUCCH resource corresponding to the second control information is determined using assignment resource indicator (ARI) information received from the base station.

18. The terminal according to claim 16, wherein if the PDCCH last detected by the terminal is included in a secondary cell (SCell) of the at least one serving cell, the PUCCH resource corresponding to the second control information is configured by the base station in advance through RRC signaling.

19. The terminal according to claim 14, wherein information about the PUCCH resources corresponding to the second control information is configured by the base station in advance through RRC signaling.

20. A base station for receiving control information from a terminal in a wireless communication system supporting a plurality of serving cells, the base station comprising:

a transmitter for transmitting, to the terminal, at least one of physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) through at least one serving cell configured in the terminal;

a receiver for receiving first control information resulting from performing a bundling on at least a portion of control information on reception of PDCCH or reception of PDSCH indicated by the PDCCH; and

a processor for controlling transmission of the first control information to the base station using physical uplink control channel (PUCCH) resource corresponding to second control information according to a predetermined rule,

wherein the second control information is associated with a PDCCH last detected by the terminal among the received PDCCH.