Method for transreceiving signals and apparatus for same

• US 9,848,417 B2
• Filed: 11/01/2016
• Issued: 12/19/2017
• Est. Priority Date: 02/09/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yang, Suckchel, Seo, Dongyoun, Kim, Bonghoe, Ahn, Joonkui
• Primary Examiner(s): Chriss, Andrew
• Assistant Examiner(s): FAYED, RASHA K
• Application Number:
  US15/340,758
• Publication Number:
  US 20170048836A1
• Time in Patent Office: 413 Days
• Field of Search: 370280, 370229, 370230, 370231, 370235, 370310, 370328, 370338, 370351, 370428, 370279, 455403, 4554221
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1835 Buffer management
• 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 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• 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: H04L 5/1469 using time-sharing
• 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 wireless communication system. More particularly, the present invention relates to a method for transmitting an uplink signal in a wireless communication system supporting carrier aggregation (CA), and to an apparatus for same, comprising the steps of: establishing a first cell having a first time division duplex (TDD) uplink-downlink (UL-DL) configuration and a second cell having a second TDD UL-DL configuration; receiving data through a DL subframe of the first cell; and transmitting reception reply information with respect to the data through a UL subframe of the second cell.

Claims

1. A method for transmitting an uplink signal by a communication apparatus in a wireless communication system, the method comprising:

configuring a primary cell of a first time division duplex uplink-downlink (TDD UL-DL) configuration and a secondary cell of a second TDD UL-DL configuration, wherein the second TDD UL-DL configuration is different from the first TDD UL-DL configuration; and

receiving a downlink signal requiring hybrid ARQ acknowledgement (HARQ-ACK) feedback within subframe #n-k of the secondary cell; and

transmitting acknowledgement information for the downlink signal in a subframe #n via a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH),

wherein k is an element of K;

{k₀, k₁, . . . k<sub>M−

1</sub>} of a specific TDD UL-DL configuration within a TDD UL-DL configuration set,

wherein K;

{k₀, k₁, . . . k<sub>M−

1</sub>} is a parameter set defined by table 1, and the TDD UL-DL configuration set includes TDD UL-DL configurations defined by table 2,

if the secondary cell is scheduled by the same cell, the specific TDD UL-DL configuration is a TDD UL-DL configuration having a smallest number of DL and special subframes among one or more TDD UL-DL configurations in which subframes configured as DL and S in the primary and secondary cells are all configured as DL and S, and

if the secondary cell is scheduled by another cell, the specific TDD UL-DL configuration is the first TDD UL-DL configuration of the primary cell,

2. The method of claim 1, wherein the acknowledgement information for the downlink signal is transmitted on the primary cell via the PUCCH.

3. The method of claim 1, wherein the downlink signal includes a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH) indicating a semi-persistent scheduling (SPS) release.

4. The method of claim 1, wherein the downlink signal can be scheduled only in a subframe timing at which a subframe combination of the primary cell and the secondary cell is (DL subframe, DL or special subframe) or (special subframe, special subframe) within the subframe set of the secondary cell.

5. The method of claim 1, wherein the communication apparatus is configured to operate in a half duplex time division duplex (HD-TDD) carrier aggregation.

6. A communication apparatus for transmitting an uplink signal in a wireless communication system, the communication apparatus comprising:

a radio frequency (RF) unit; and

a processor,

wherein the processor is configured to

configure a primary cell of a first time division duplex uplink-downlink (TDD UL-DL) configuration and a secondary cell of a second TDD UL-DL configuration,

wherein the second TDD UL-DL configuration is different from the first TDD UL-DL configuration,

receive a downlink signal requiring hybrid ARQ acknowledgement (HARQ-ACK) feedback within subframe #n-k of the secondary cell, and

transmit acknowledgement information for the downlink signal in a subframe #n via a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH),

wherein k is an element of K;

{k₀, k₁, . . . k<sub>M−

1</sub>} of a specific TDD UL-DL configuration within a TDD UL-DL configuration set,

wherein K;

{k₀, k₁, . . . k<sub>M−

1</sub>} is a parameter set defined by table 1, and the TDD UL-DL configuration set includes TDD UL-DL configurations defined by table 2,

if the secondary cell is scheduled by the same cell, the specific TDD UL-DL configuration is a TDD UL-DL configuration having a smallest number of DL and special subframes among one or more TDD UL-DL configurations in which subframes configured as DL and S in the primary and secondary cells are all configured as DL and S, and

if the secondary cell is scheduled by another cell, the specific TDD UL-DL configuration is the first TDD UL-DL configuration of the primary cell,

7. The communication apparatus of claim 6, wherein the acknowledgement information for the downlink signal is transmitted on the primary cell via the PUCCH.

8. The communication apparatus of claim 6, wherein the downlink signal includes a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH) indicating a semi-persistent scheduling (SPS) release.

9. The communication apparatus of claim 6, wherein the downlink signal can be scheduled only in a subframe timing at which a subframe combination of the primary cell and the secondary cell is (DL subframe, DL or special subframe) or (special subframe, special subframe) within the subframe set of the secondary cell.

10. The communication apparatus according to claim 6, wherein the communication apparatus is configured to operate in a half duplex time division duplex (HD-TDD) carrier aggregation.