Method and apparatus for transmitting HARQ-ACK feedback information by a user equipment in a wireless communication system

Patent metadata

Field	Value
Publication number	US-9615267-B2
Application number	US-201313945601-A
Country	US
Kind code	B2
Filing date	Jul 18, 2013
Priority date	Jul 18, 2012
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

An apparatus and method are provided for transmitting Hybrid Automatic Repeat reQuest ACKnowledgment (HARQ-ACK) feedback information by a User Equipment (UE) in a wireless communication system, when Component Carriers (CCs) configured for the UE include a Frequency Division Duplexing (FDD) CC and a Time Division Duplexing (TDD) CC. The method includes determining a HARQ-ACK timing and a CC for transmitting the HARQ-ACK feedback information, based on a composition structure of the CCs configured for the UE, and transmitting the HARQ-ACK feedback information on a Physical Uplink Control CHannel (PUCCH) or a Physical Uplink Shared CHannel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing.

First claim

What is claimed is:

1. A method for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information by a user equipment (UE) in a wireless communication system, the method comprising:
determining a HARQ-ACK timing and a component carrier (CC) for transmitting the HARQ-ACK feedback information, based on a composition structure indicating that a frequency division duplexing (FDD) CC or a time division duplexing (TDD) CC configured for the UE is a primary CC (PCC); and
transmitting the HARQ-ACK feedback information on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing,
wherein, if the composition structure indicates that the FDD CC is the PCC, determining the HARQ-ACK timing and the CC for transmitting the HARQ-ACK feedback information comprises:
grouping first CCs configured with an FDD configuration into a first group;
grouping second CCs configured with a TDD configuration into a second group; and
determining the HARQ-ACK timing for each of the second CCs in the second group based on TDD uplink/downlink configurations of the second CCs,
wherein HARQ-ACK feedback information of the first group is transmitted on the PCC based on an FDD HARQ-ACK timing, and HARQ-ACK feedback information of the second group is transmitted on a specific TDD CC based on the determined HARQ-ACK timing.

2. The method of claim 1 , further comprising indicating the specific TDD CC through radio resource control (RRC) signaling.

3. The method of claim 1 , wherein if the composition structure indicates that the FDD CC is the PCC, the HARQ-ACK feedback information of all CCs configured for the UE is transmitted on the PCC based on an FDD HARQ-ACK timing.

4. The method of claim 1 , wherein if the HARQ-ACK feedback information is transmitted based on a PUCCH format of channel selection, the HARQ-ACK feedback information uses one of TDD mapping and FDD mapping.

5. The method of claim 1 , wherein a number of downlink subframes for which the HARQ-ACK feedback information is transmitted on the PUSCH of a current uplink subframe is determined based on at least one of a size of a bundling window of the CC and an uplink/downlink assignment index (UL DAI) field included in a physical downlink control channel (PDCCH).

6. A method for transmitting hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback information by a user equipment (UE) in a wireless communication system, the method comprising:
determining a HARQ-ACK timing and a component carrier (CC) for transmitting the HARQ-ACK feedback information, based on a composition structure indicating that a frequency division duplexing (FDD) CC or a time division duplexing (TDD) CC configured for the UE is primary CC (PCC); and
transmitting the HARQ-ACK feedback information on a physical uplink control channel (PUSCH) or a physical uplink shared channel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing,
wherein if the composition structure indicates that the FDD CC is the PCC, determining the HARQ-ACK timing and the CC for transmitting the HARQ-ACK feedback information comprises:
grouping first CCs configured with an FDD configuration into a first group;
grouping second CCs configured with a TDD configuration into a second group; and
determining the HARQ-ACK timing for each of the second CCs in the second group, based on TDD uplink/downlink configurations of the second CCs,
wherein HARQ-ACK feedback information of the first group is transmitted based on an FDD HARQ-ACK timing, and HARQ-ACK feedback information of the second group is transmitted on the PCC based on the determined HARQ-ACK timing.

7. A method for transmitting hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback information by a user equipment (UE) in a wireless communication system, the method comprising:
determining a HARQ-ACK timing and a component carrier (CC) for transmitting the HARQ-ACK feedback information, based on a composition structure indicating that a frequency division duplexing (FDD) CC or a time division duplexing (TDD) CC configured for the UE is primary CC (PCC); and
transmitting the HARQ-ACK feedback information on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing,
wherein if the composition structure indicates that the TDD CC is the PCC, determining the HARQ-ACK timing and the CC for transmitting the HARQ-ACK feedback information comprises:
grouping first CCs configured with an FDD configuration into a first group;
grouping second CCs configured with a TDD configuration into a second group; and
determining the HARQ-ACK timing for each of the second CCs in the second group based on TDD uplink/downlink configurations of the second CCs; and
wherein HARQ-ACK feedback information of the first group is transmitted on a specific FDD CC based on an FDD HARQ-ACK timing, and HARQ-ACK feedback information of the second group is transmitted on the PCC based on the determined HARQ-ACK timing.

8. A method for transmitting hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback information by a user equipment (UE) in a wireless communication system, the method comprising:
determining a HARQ-ACK timing and a component carrier (CC) for transmitting the HARQ-ACK feedback information, based on a composition structure indicating that a frequency division duplexing (FDD) CC or a time division duplexing (TDD) CC configured for the UE is primary CC (PCC); and
transmitting the HARQ-ACK feedback information on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing,
wherein if the composition structure indicates that the TDD CC is the PCC, determining the HARQ-ACK timing and the CC for transmitting the HARQ-ACK feedback information comprises:
grouping first CCs configured with an FDD configuration into a first group;
grouping second CCs configured with a TDD configuration into a second group; and
determining the HARQ-ACK timing for each of the second CCs in the second group based on the TDD uplink/downlink configurations of the second CCs,
wherein HARQ-ACK feedback information of the first group is transmitted on the PCC based on an FDD HARQ-ACK timing, if the PCC is an uplink subframe,
wherein the HARQ-ACK feedback information of the first group is transmitted on a specific FDD CC based on an FDD HARQ-ACK timing, if the PCC is a Downlink subframe, and
wherein HARQ-ACK feedback information of the second group is transmitted on the PCC based on the determined HARQ-ACK timing.

9. A method for transmitting hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback information by a user equipment (UE) in a wireless communication system, the method comprising:
determining a HARQ-ACK timing and a component carrier (CC) for transmitting the HARQ-ACK feedback information, based on a composition structure indicating that a frequency division duplexing (FDD) CC or a time division duplexing (TDD) CC configured for the UE is primary CC (PCC); and
transmitting the HARQ-ACK feedback information on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing,
wherein if the composition structure indicates that the TDD CC is the PCC, determining the HARQ-ACK timing and the CC for transmitting the HARQ-ACK feedback information comprises:
grouping first CCs configured with an FDD configuration into a first group;
grouping second CCs configured with a TDD configuration into a second group; and

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Fu Jingxing
• Sun Chengjun
• Li Yingyang

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04L5/143

  for modulated signals (H04L5/1469 takes precedence) · CPC title

• H04L1/1854

  Scheduling and prioritising arrangements · CPC title