Method for transmitting/receiving signal and device therefor

• US 9,014,065 B2
• Filed: 03/26/2012
• Issued: 04/21/2015
• 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:
  US14/007,198
• Publication Number:
  US 20140022962A1
• Time in Patent Office: 1,121 Days
• Field of Search: 370/294, 370310-350, 370/436, 370/442, 370/468, 370/478, 370/498, 455427-464
• US Class Current: 370/280
• 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 transmitting an uplink signal by a mobile terminal in a wireless communication system supporting carrier aggregation, the method comprising:

configuring a first cell having a first TDD (Time Division Duplex) UL-DL (Uplink-Downlink) configuration and a second cell different from the first cell and having a second TDD UL-DL configuration different from the first TDD UL-DL configuration;

receiving data through a DL subframe of the first cell; and

transmitting acknowledgement information on the data through a UL subframe of the second 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 of the first cell and the UL subframe of the second cell is given by a parameter set configured for a third TDD UL-DL configuration that has a smallest number of DL subframes among one or more TDD UL-DL configurations in which one or more subframes configured as DL in the first cell or the second cell are all configured as DL,

wherein TDD UL-DL configurations are defined as follows;

2. The method according to claim 1, 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 a TDD UL-DL configuration as shown in the following table, and M is an integer equal to or greater than 1

3. The method according to claim 1, wherein, if the combination of the first TDD UL-DL configuration and the second TDD UL-DL configuration does not correspond to one of the 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 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 according to claim 1, wherein the first cell is a secondary cell and the second cell is a primary cell.

5. The method according to claim 1,

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.

6. A communication device configured to transmit an uplink signal in a wireless communication system supporting carrier aggregation, the communication device comprising:

a radio frequency (RF) unit; and

a processor,

wherein the processor is configured to configure a first cell having a first TDD UL-DL configuration and a second cell different from the first cell and having a second TDD UL-DL configuration different from the first TDD UL-DL configuration, to receive data through a DL subframe of the first cell, and to transmit acknowledgement information on the data through a UL subframe of the second 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 of the first cell and the UL subframe of the second cell is given by a parameter value set configured for a third TDD UL-DL configuration that has a smallest number of DL subframes among one or more TDD UL-DL configurations in which one or more subframes configured as DL in the first cell or the second cell are all configured as DL,

wherein TDD UL-DL configurations are defined as follows;

7. The communication device according to claim 6, 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

8. The communication device according to claim 6, wherein, if the combination of the first TDD UL-DL configuration and the second TDD UL-DL configuration does not correspond to one of the 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 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.

9. The communication device according to claim 6, wherein the first cell is a secondary cell and the second cell is a primary cell.

10. The communication device according to claim 6,

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.