HARQ method and apparatus for communication system

• US 10,069,611 B2
• Filed: 02/27/2017
• Issued: 09/04/2018
• Est. Priority Date: 03/11/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Youngbum, Cho, Joonyoung, Han, Jinkyu, Lee, Juho, Ji, Hyoungju, Choi, Seunghoon
• Primary Examiner(s): Weidner, Timothy J
• Application Number:
  US15/443,703
• Publication Number:
  US 20170180096A1
• Time in Patent Office: 554 Days
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• 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: H04L 5/0078 Timing of allocation
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• 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

Disclosed is a method for communication of a terminal in a communication system, including receiving downlink control information (DCI) for scheduling a second cell, transmitting uplink data corresponding to the DCI on a first subframe of the second cell, and receiving feedback information for the uplink data on a second subframe identified based on a time division duplex (TDD) uplink/downlink (UL/DL) configuration of a first cell, if the first cell and the second cell are configured for the terminal, and the TDD UL/DL configuration of the first cell and a TDD UL/DL configuration of the second cell are different, and the DCI for scheduling the second cell is received on the first cell.

Claims

1. A method for communication of a terminal in a communication system, the method comprising:

receiving downlink control information (DCI) for scheduling a second cell;

transmitting uplink data corresponding to the DCI on a first subframe of the second cell; and

receiving feedback information for the uplink data on a second subframe identified based on a time division duplex (TDD) uplink/downlink (UL/DL) configuration of a first cell, when the first cell and the second cell are configured for the terminal, the TDD UL/DL configuration of the first cell and a TDD UL/DL configuration of the second cell are different, and the DCI for scheduling the second cell is received on the first cell.

2. The method of claim 1, wherein any subframe of the TDD UL/DL configuration of the first cell that corresponds to an uplink subframe of the TDD UL/DL configuration of the second cell is an uplink subframe.

3. The method of claim 1, wherein the DCI comprises a carrier indicator corresponding to the second cell.

4. The method of claim 1, wherein the TDD UL/DL configuration of the first cell is a TDD UL/DL configuration 1 and the TDD UL/DL configuration of the second cell is a TDD UL/DL configuration 2.

5. The method of claim 1, wherein the second subframe corresponds to a subframe number i and the first subframe corresponds to a subframe number i-k, and

wherein a value corresponding to k is identified based on the following table,

6. A method for communication of a base station, in a communication system, the method comprising:

transmitting, to a terminal, downlink control information (DCI) for scheduling a second cell;

receiving, from the terminal, uplink data corresponding to the DCI on a first subframe of the second cell; and

transmitting, to the terminal, feedback information for the uplink data on a second subframe identified based on a time division duplex (TDD) uplink/downlink (UL/DL) configuration of a first cell, when the first cell and the second cell are configured for the terminal, the TDD UL/DL configuration of the first cell and a TDD UL/DL configuration of the second cell are different, and the DCI for scheduling the second cell is received on the first cell.

7. The method of claim 6, wherein any subframe of the TDD UL/DL configuration of the first cell that corresponds to an uplink subframe of the TDD UL/DL configuration of the second cell is an uplink subframe.

8. The method of claim 6, wherein the DCI comprises a carrier indicator corresponding to the second cell.

9. The method of claim 6, wherein the TDD UL/DL configuration of the first cell is a TDD UL/DL configuration 1 and the TDD UL/DL configuration of the second cell is a TDD UL/DL configuration 2.

10. The method of claim 6, wherein the second subframe corresponds to a subframe number i and the first subframe corresponds to a subframe number i-k, and

wherein a value corresponding to k is identified based on the following table,

11. A terminal in a communication system, the terminal comprising:

a transceiver configured to transmit and receive a signal; and

a controller coupled to the transceiver and configured to;

receive downlink control information (DCI) for scheduling a second cell,

transmit uplink data corresponding to the DCI on a first subframe of the second cell, and

receive feedback information for the uplink data on a second subframe identified based on a time division duplex (TDD) uplink/downlink (UL/DL) configuration of a first cell, if the first cell and the second cell are configured for the terminal, the TDD UL/DL configuration of the first cell and a TDD UL/DL configuration of the second cell are different, and the DCI for scheduling the second cell is received on the first cell.

12. The terminal of claim 11, wherein any subframe of the TDD UL/DL configuration of the first cell corresponding to an uplink subframe of the TDD UL/DL configuration of the second cell is an uplink subframe.

13. The terminal of claim 11, wherein the DCI comprises a carrier indicator corresponding to the second cell.

14. The terminal of claim 11, wherein the TDD UL/DL configuration of the first cell is a TDD UL/DL configuration 1 and the TDD UL/DL configuration of the second cell is a TDD UL/DL configuration 2.

15. The terminal of claim 11, wherein the second subframe corresponds to a subframe number i and the first subframe corresponds to a subframe number i-k, and

wherein a value corresponding to k is identified based on the following table,

16. A base station in a communication system, the base station comprising:

a transceiver configured to transmit and receive a signal; and

a controller coupled to the transceiver and configured to;

transmit, to a terminal, downlink control information (DCI) for scheduling a second cell,

receive, from the terminal, uplink data corresponding to the DCI on a first subframe of the second cell, and

transmit, to the terminal, feedback information for the uplink data on a second subframe identified based on a time division duplex (TDD) uplink/downlink (UL/DL) configuration of a first cell, if the first cell and the second cell are configured for the terminal, the TDD UL/DL configuration of the first cell and a TDD UL/DL configuration of the second cell are different, and the DCI for scheduling the second cell is received on the first cell.

17. The base station of claim 16, wherein any subframe of the TDD UL/DL configuration of the first cell corresponding to an uplink subframe of the TDD UL/DL configuration of the second cell is an uplink subframe.

18. The base station of claim 16, wherein the DCI comprises a carrier indicator corresponding to the second cell.

19. The base station of claim 16, wherein the TDD UL/DL configuration of the first cell is a TDD UL/DL configuration 1 and the TDD UL/DL configuration of the second cell is a TDD UL/DL configuration 2.

20. The base station of claim 16, wherein the second subframe corresponds to a subframe number i and the first subframe corresponds to a subframe number i−

k, and

wherein a value corresponding to k is identified based on the following table,