Method for transmitting/receiving signal and device therefor

• US 9,807,744 B2
• Filed: 09/28/2015
• Issued: 10/31/2017
• Est. Priority Date: 03/24/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yang, Suckchel, Kim, Mingyu, Ahn, Joonkui, Seo, Dongyoun
• Primary Examiner(s): Phan, Tri H
• Application Number:
  US14/867,591
• Publication Number:
  US 20160021659A1
• Time in Patent Office: 764 Days
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 25/03891 Spatial equalizers MIMO diversity systems H04B7/0413
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• 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: H04L 5/22 using time-division multiplexing
• 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 72/21 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 and a device therefor, the method comprising: setting a first cell having a first TDD 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 response information on the data through a UL subframe of the second cell, wherein the relationship between the DL subframe and the UL subframe is determined by a parameter value set in a specific TDD UL-DL configuration, which is the TDD UL-DL configuration having the least number of DL subframes from TDD UL-DL configuration(s), in which subframes set as a DL in the first or second cell are all set as DLs.

Claims

1. A method for a wireless device to transmit an uplink signal in a wireless communication system, the method comprising:

receiving downlink (DL) scheduling information in a DL subframe on a secondary cell of a first Time Division Duplex (TDD) Uplink-Downlink (UL-DL) configuration;

receiving data indicated by the DL scheduling information in the DL subframe on the secondary cell; and

transmitting acknowledgement information on the data in a UL subframe on either a primary cell of a second TDD UL-DL configuration or the secondary cell,

wherein if a combination of the first TDD UL-DL configuration and the second TDD UL-DL configuration corresponds to one of following combinations;

TDD UL-DL configuration #1 and TDD UL-DL configuration #3,

TDD UL-DL configuration #2 and TDD UL-DL configuration #3, and

TDD UL-DL configuration #2 and TDD UL-DL configuration #4,

then a relation between the DL subframe and the UL subframe follows a relation defined for a third TDD UL-DL configuration different from the first TDD UL-DL configuration and the second TDD UL-DL configuration, the third TDD UL-DL configuration having a smallest number of DL subframes among one or more TDD UL-DL configurations having DL subframes located in a superset of DL positions of the first and second TDD UL-DL configurations.

2. The method of claim 1, wherein TDD UL-DL configurations are defined as follows:

3. The method according to claim 2, wherein if the combination of the first TDD UL-DL configuration and the second TDD UL-DL configuration does not corresponds to one of following combinations:

TDD UL-DL configuration #1 and TDD UL-DL configuration #3,

TDD UL-DL configuration #2 and TDD UL-DL configuration #3, and

TDD UL-DL configuration #2 and TDD UL-DL configuration #4, then

the relation between the DL subframe and the UL subframe is given by a parameter set that is configured for one of the first TDD UL-DL configuration or the second TDD UL-DL configuration that has a largest number of DL subframes.

4. The method of claim 2,

wherein if (the first TDD UL-DL configuration, the second TDD UL-DL configuration) corresponds to (#1, #3) or (#3, #1), the third TDD UL-DL configuration is TDD UL-DL configuration #4, and

wherein if (the first TDD UL-DL configuration, the second TDD UL-DL configuration) corresponds to (#2, #3), (#3, #2), (#2, #4) or (#4, #2), the third TDD UL-DL configuration is TDD UL-DL configuration #5.

5. The method according to claim 4, wherein the DL subframe is subframe #n−

k (kε

K), the UL subframe is subframe #n, K;

{k₀, k₁, . . . , k_M-1} is defined according to TDD UL-DL configuration as shown in the following table, and M is an integer equal to or greater than 1

6. The method according to claim 1, wherein the wireless communication system is a 3rd Generation Partnership Project (3GPP) wireless communication system.

7. A wireless device configured to transmit an uplink signal in a wireless communication system, the wireless device comprising:

a radio frequency (RF) unit; and

a processor operatively connected to the RF unit and configured to

receive downlink (DL) scheduling information in a DL subframe on a secondary cell of a first Time Division Duplex (TDD) Uplink-Downlink (UL-DL) configuration;

receive data indicated by the DL scheduling information in the DL subframe on the secondary cell; and

transmit acknowledgement information on the data in a UL subframe on either a primary cell of a second TDD UL-DL configuration or the secondary cell,

wherein if a combination of the first TDD UL-DL configuration and the second TDD UL-DL configuration corresponds to one of following combinations;

TDD UL-DL configuration #1 and TDD UL-DL configuration #3,

TDD UL-DL configuration #2 and TDD UL-DL configuration #3, and

TDD UL-DL configuration #2 and TDD UL-DL configuration #4,

then a relation between the DL subframe and the UL subframe follows a relation defined for a third TDD UL-DL configuration different from the first TDD UL-DL configuration and the second TDD UL-DL configuration, the third TDD UL-DL configuration having a smallest number of DL subframes among one or more TDD UL-DL configurations having DL subframes located in a superset of DL positions of the first and second TDD UL-DL configurations.

8. The wireless device of claim 7, wherein TDD UL-DL configurations are defined as follows:

9. The wireless device of claim 8, wherein if the combination of the first TDD UL-DL configuration and the second TDD UL-DL configuration does not corresponds to one of following combinations:

TDD UL-DL configuration #1 and TDD UL-DL configuration #3,

TDD UL-DL configuration #2 and TDD UL-DL configuration #3, and

TDD UL-DL configuration #2 and TDD UL-DL configuration #4, then

the relation between the DL subframe and the UL subframe is given by a parameter set that is configured for one of the first TDD UL-DL configuration or the second TDD UL-DL configuration that has a largest number of DL subframes.

10. The wireless device of claim 8,

wherein if (the first TDD UL-DL configuration, the second TDD UL-DL configuration) corresponds to (#1, #3) or (#3, #1), the third TDD UL-DL configuration is TDD UL-DL configuration #4, and

wherein if (the first TDD UL-DL configuration, the second TDD UL-DL configuration) corresponds to (#2, #3), (#3, #2), (#2, #4) or (#4, #2), the third TDD UL-DL configuration is TDD UL-DL configuration #5.

11. The wireless device of claim 10, wherein the DL subframe is subframe #n−

k (kε

K), the UL subframe is subframe #n, K;

{k₀, k₁, . . ., k_M-1} is defined according to TDD UL-DL configuration as shown in the following table, and M is an integer equal to or greater than 1

12. The wireless device according to claim 7, wherein the wireless communication system is a 3rd Generation Partnership Project (3GPP) wireless communication system.