EFFECTIVE METHOD AND DEVICE FOR TRANSMITTING CONTROL INFORMATION FOR SUPPORTING UPLINK MULTI-ANTENNA TRANSMISSION

• US 20130028213A1
• Filed: 03/29/2011
• Published: 01/31/2013
• Est. Priority Date: 03/29/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Ko, Hyun Soo, Chung, Jae Hoon, Han, Seung Hee, Lee, Moon Il
• Granted Patent: US 8,819,501 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0623 Auxiliary parameters, e.g. power control [PCB] or not acknowledged commands [NACK], used as feedback information
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1614 using bitmaps
• CPC Class Codes: H04L 1/1816 with retransmission of the same, encoded, message
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 2025/03414 Multicarrier
• CPC Class Codes: H04L 2025/03426 transmission using multiple-input and multiple-output channels
• CPC Class Codes: H04L 25/03343 Arrangements at the transmitter end
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• 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: H04W 52/242 : taking into account path loss
• CPC Class Codes: H04W 72/044 : based on the type of the allocated resource
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/08 : Access point devices

Abstract

Disclosed is a method for transmitting control information on uplink multi-antenna transmission from a base station and the method includes: transmitting DCI that schedules uplink transmission of a first data block and a second data block through a PDCCH; receiving the first and second data blocks scheduled by the DCI; transmitting information indicating ACK or NACK for the received first and second data blocks, respectively, by using a first PHICH for the first data block and a second PHICH resource for the second data block; receiving a retransmission for a negative-acknowledged data block; and transmitting information indicating ACK or NACK of the retransmission of the negative-acknowledged data block by using the first PHICH resource when the number of negative-acknowledged data blocks is not identical to the number of data blocks that the PDCCH indicates.

Claims

1. A method for transmitting control information of uplink (UL) MIMO (Multiple Input Multiple Output) transmission by a base station (BS), the method comprising:

transmitting downlink control information (DCI) scheduling UL transmission of a first transport block (TB) and a second transport block (TB) to a user equipment (UE) through a physical downlink control channel (PDCCH);

receiving the first and second transport blocks (TBs) scheduled by the DCI from the user equipment (UE);

transmitting information indicating acknowledgement (ACK) or negative acknowledgement (NACK) of each of the received first and second transport blocks (TBs) to the user equipment (UE), using a first physical hybrid-automatic repeat request indicator channel (PHICH) resource with respect to the first transport block (TB), and using a second PHICH resource with respect to the second transport block (TB);

receiving retransmission of a negative-acknowledged transport block (NACK TB) from the user equipment (UE); and

transmitting, if the number of NACK transport blocks is different from the number of a plurality of transport blocks indicated by the PDCCH, ACK or NACK indication information for retransmission of the negative-acknowledged transport block (NACK TB) to the user equipment (UE) using the first PHICH resource.

2. The method according to claim 1, wherein the retransmission is carried out if a PDCCH is not detected in a downlink subframe in which the UE detects the PHICH.

3. The method according to claim 1, wherein a subframe performing the retransmission at the UE is a fourth subframe starting from a subframe in which the UE receives ACK or NACK indication information of each of the first and second transport blocks.

4. The method according to claim 1, wherein a subframe in which the UE receives ACK or NACK indication information for the retransmission is a fourth subframe starting from a subframe in which the UE performs retransmission.

5. The method according to claim 1, wherein the first PHICH resource and the second PHICH resource are distinguished from each other by indices of different frequency domains.

6. A method for performing uplink (UL) MIMO (Multiple Input Multiple Output) transmission by a user equipment (UE), the method comprising:

receiving downlink control information (DCI) scheduling UL transmission of a first transport block (TB) and a second transport block (TB) from a base station (BS) through a physical downlink control channel (PDCCH);

transmitting the first and second transport blocks (TBs) scheduled by the DCI to the base station (BS);

receiving information indicating acknowledgement (ACK) or negative acknowledgement (NACK) of each of the received first and second transport blocks (TBs) from the base station (BS), using a first physical hybrid-automatic repeat request indicator channel (PHICH) resource with respect to the first transport block (TB), and using a second PHICH resource with respect to the second transport block (TB);

transmitting retransmission of a negative-acknowledged transport block (NACK TB) to the base station (BS); and

receiving, if the number of NACK transport blocks is different from the number of a plurality of transport blocks indicated by the PDCCH, ACK or NACK indication information for retransmission of the negative-acknowledged transport block (NACK TB) from the base station (BS) using the first PHICH resource.

7. The method according to claim 6, wherein the retransmission is carried out if a PDCCH is not detected in a downlink subframe in which the UE detects the PHICH.

8. The method according to claim 6, wherein a subframe performing the retransmission at the UE is a fourth subframe starting from a subframe in which the UE receives ACK or NACK indication information of each of the first and second transport blocks.

9. The method according to claim 6, wherein a subframe in which the UE receives ACK or NACK indication information for the retransmission is a fourth subframe starting from a subframe in which the UE performs retransmission.

10. The method according to claim 6, wherein the first PHICH resource and the second PHICH resource are distinguished from each other by indices of different frequency domains.

11. A base station (BS) for transmitting control information of uplink (UL) MIMO (Multiple Input Multiple Output) transmission comprising:

a reception module for receiving an uplink signal from a user equipment (UE);

a transmission module for transmitting a downlink signal to the user equipment (UE); and

a processor for controlling the base station (BS) including the reception module and the transmission module,

wherein the processor enables the transmission module to transmit downlink control information (DCI) scheduling UL transmission of a first transport block (TB) and a second transport block (TB) to a user equipment (UE) through a physical downlink control channel (PDCCH), enables the reception module to receive the first and second transport blocks (TBs) scheduled by the DCI from the user equipment (UE), enables the transmission module to transmit information indicating acknowledgement (ACK) or negative acknowledgement (NACK) of each of the received first and second transport blocks (TBs) to the user equipment (UE), using a first physical hybrid-automatic repeat request indicator channel (PHICH) resource with respect to the first transport block (TB), and using a second PHICH resource with respect to the second transport block (TB), enables the reception module to receive retransmission of a negative-acknowledged transport block (NACK TB) from the user equipment (UE), and enables the transmission module to transmit, if the number of NACK transport blocks is different from the number of a plurality of transport blocks indicated by the PDCCH, ACK or NACK indication information for retransmission of the negative-acknowledged transport block (NACK TB) to the user equipment (UE) using the first PHICH resource.

12. A user equipment (UE) for performing uplink (UL) MIMO (Multiple Input Multiple Output) transmission comprising:

a reception module for receiving a downlink signal from a base station (BS);

a transmission module for transmitting an uplink signal to the base station (BS); and

a processor for controlling the user equipment (UE) including the reception module and the transmission module,

wherein the processor enables the reception module to receive downlink control information (DCI) scheduling UL transmission of a first transport block (TB) and a second transport block (TB) from a base station (BS) through a physical downlink control channel (PDCCH), enables the transmission module to transmit the first and second transport blocks (TBs) scheduled by the DCI to the base station (BS), enables the reception module to receive information indicating acknowledgement (ACK) or negative acknowledgement (NACK) of each of the received first and second transport blocks (TBs) from the base station (BS), using a first physical hybrid-automatic repeat request indicator channel (PHICH) resource with respect to the first transport block (TB), and using a second PHICH resource with respect to the second transport block (TB), enables the transmission module to transmit retransmission of a negative-acknowledged transport block (NACK TB) to the base station (BS), and enables the reception module to receive, if the number of NACK transport blocks is different from the number of a plurality of transport blocks indicated by the PDCCH, ACK or NACK indication information for retransmission of the negative-acknowledged transport block (NACK TB) from the base station (BS) using the first PHICH resource.