METHOD AND DEVICE FOR TRANSMITTING/RECEIVING UPLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20130195066A1
• Filed: 11/02/2011
• Published: 08/01/2013
• Est. Priority Date: 11/02/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Hyunwoo, Chung, Jaehoon, Han, Seunghee
• Granted Patent: US 9,113,458 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• 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 1/1887 Scheduling and prioritising arrangements
• 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 5/0048 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 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 36/0072 of resource information of target access point
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to a method for a terminal to transmit acknowledgement information including: determining a physical uplink control channel (PUCCH) format and resource, in which the acknowledgement information is transmitted in response to a downlink transmission received in a downlink sub-frame set including M (M≧1) downlink sub-frame; and transmitting the acknowledgement information using the PUCCH format and resource in one uplink sub-frame. Here, more than one serving cells are configured to the terminal, and the more than one serving cells can include one PCell and at least one SCell. The acknowledgement information can be transmitted using a PUCCH format 1a/1b when one physical downlink shared channel (PDSCH) without a corresponding physical downlink control channel (PDCCH) detected, exists only on PCell in the downlink sub-frame set, and a semi-persistent scheduling (SPS) release PDCCH does not exist in the downlink sub-frame set.

Claims

1. A method for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information at a User Equipment (UE) in a wireless communication system, comprising:

determining a Physical Uplink Control Channel (PUCCH) format and resource through which ACK/NACK information for downlink transmission in a downlink frame set including M (M≧

1) downlink subframes is to be transmitted; and

transmitting the ACK/NACK information using the PUCCH format and resource in one uplink subframe,

wherein more than one serving cell is configured for the UE and the more than one serving cell includes one Primary Cell (PCell) and at least one Secondary Cell (SCell), and

the ACK/NACK information is transmitted using a PUCCH format 1a/1b, when one Physical Downlink Shared Channel (PDSCH) in which a corresponding Physical Downlink Control Channel (PDCCH) is not detected is present in the downlink subframe set only on the PCell and a Semi-Persistent Scheduling (SPS) release PDCCH is not present in the downlink subframe set.

2. The method according to claim 1, wherein a resource index of the PUCCH format 1a/1b is determined by a value of a Transmit Power Control (TPC) field of a PDCCH indicating SPS activation for one PDSCH in which the corresponding PDCCH is not detected.

3. The method according to claim 1, wherein the ACK/NACK information is transmitted by channel selection using a PUCCH format 1b, when M is greater than 1, one PDSCH in which the corresponding PDCCH is not detected is present in the downlink subframe set only on the PCell, a PDSCH indicated by detection of the corresponding PDCCH in the downlink subframe set is present in the downlink subframe set only on the PCell, and a Downlink Assignment Index (DAI) value of the detected PDCCH is 1.

4. The method according to claim 3, wherein the channel selection is performed by selecting one PUCCH resource from among A (where A is 2 or 3) PUCCH resources.

5. The method according to claim 4, wherein the A is determined based on the number of transport blocks of the downlink transmission.

6. The method according to claim 4,

wherein one of the A PUCCH resources is determined by a value of a TPC field of a PDCCH indicating SPS activation for the one PDSCH in which the corresponding PDCCH is not detected, and

the other resources of the A PUCCH resources are derived from a Control Channel Element (CCE) index of the detected PDCCH.

7. The method according to claim 1,

wherein a TPC field of a PDCCH with a DAI value being greater than 1 corresponding to a PDSCH on the PCell is used for determination of a resource index of a PUCCH format 3, and

a TPC field of a PDCCH corresponding to a PDSCH on each of the at least one SCell is used for determination of the resource index of the PUCCH format 3.

8. The method according to claim 7, wherein the UE assumes that the same PUCCH resource index value is transmitted in all PDCCHs on the PCell and the at least one SCell used for determination of the resource index of the PUCCH format 3 in the downlink subframe set.

9. The method according to claim 1, wherein the wireless communication system is a Time Division Duplex (TDD) wireless communication system.

10. A User Equipment (UE) for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information in a wireless communication system, comprising:

a reception module for receiving a downlink signal from a Base Station (BS);

a transmission module for transmitting an uplink signal to the BS; and

a processor for controlling the UE including the reception module and the transmission module,

wherein the processor is configured to,

determine a Physical Uplink Control Channel (PUCCH) format and resource through which ACK/NACK information for downlink transmission received through the reception module in a downlink frame set including M (M≧

1) downlink subframes is to be transmitted and

transmit the ACK/NACK information using the PUCCH format and resource in one uplink subframe through the transmission module, and

wherein more than one serving cell is configured for the UE and the more than one serving cell includes one Primary Cell (PCell) and at least one Secondary Cell (SCell), and

the ACK/NACK information is transmitted using a PUCCH format 1a/1b, when one Physical Downlink Shared Channel (PDSCH) in which a corresponding Physical Downlink Control Channel (PDCCH) is not detected is present in the downlink subframe set only on the PCell and a Semi-Persistent Scheduling (SPS) release PDCCH is not present in the downlink subframe set.

11. The UE according to claim 10, wherein the ACK/NACK information is transmitted by channel selection using a PUCCH format 1b, when M is greater than 1, one PDSCH in which the corresponding PDCCH is not detected is present in the downlink subframe set only on the PCell, a PDSCH indicated by detection of the corresponding PDCCH is present in the downlink subframe set only on the PCell, and a Downlink Assignment Index (DAI) value of the detected PDCCH is 1.

12. The UE according to claim 11, wherein the channel selection is performed by selecting one PUCCH resource from among A (where A is 2 or 3) PUCCH resources.

13. The UE according to claim 12, wherein the A is determined based on the number of transport blocks of the downlink transmission.

14. The UE according to claim 12, wherein one of the A PUCCH resources is determined by a value of a TPC field of a PDCCH indicating SPS activation for the one PDSCH in which the PDCCH is not detected and the other resources of the A PUCCH resources are derived from a Control Channel Element (CCE) index of the detected PDCCH.