Method for configuring a backhaul link subframe in a wireless communication system to which a carrier aggregation scheme is applied and an apparatus for the same

• US 9,167,567 B2
• Filed: 01/30/2012
• Issued: 10/20/2015
• Est. Priority Date: 03/03/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seungmin, Kim, Hakseong, Seo, Hanbyul
• Primary Examiner(s): Lee, Andrew
• Application Number:
  US13/982,901
• Publication Number:
  US 20130308523A1
• Time in Patent Office: 1,359 Days
• Field of Search: 370/328, 370/329, 370/337, 370/347
• US Class Current: 1/1
• CPC Class Codes: H04J 11/0069 Cell search, i.e. determining cell identity [cell-ID] design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655
• CPC Class Codes: H04L 25/22 Repeaters for converting two wires to four wires; Repeaters for converting single current to double current
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• 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 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/1273 of downlink data flows
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• 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
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method for configuring a backhaul link subframe in a wireless communication system to which a carrier aggregation scheme is applied and an apparatus for the same are disclosed. The method comprises determining one of a plurality of subframe configurations as a first subframe configuration for a primary component carrier allocated to the relay node; configuring subframe configuration candidates for one or more secondary component carriers allocated to the relay node on the basis of the determined first subframe configuration; determining a second subframe configuration for each of the one or more secondary component carriers by using the configured subframe configuration candidates; and transmitting and receiving a signal to and from the relay node in accordance with the first subframe configuration and the second subframe configuration.

Claims

1. A method for transmitting and receiving signals between a base station and a user equipment in a TDD (Time Division Duplex) wireless communication system, the method comprising:

configuring a first subframe configuration for a primary cell and a second subframe configuration for a secondary cell;

receiving downlink data via the secondary cell from the base station at a first subframe; and

transmitting ACK(ACKnowledgement)/NACK(Negative-ACK) information of the downlink data to the base station at a second subframe,

wherein the first subframe is a downlink subframe in both the first subframe configuration for the primary cell and the second subframe configuration for the secondary cell, and

wherein a relationship between the first subframe and the second subframe is defined based on the first subframe configuration for the primary cell.

2. The method of claim 1, further comprising:

receiving downlink control information via the primary cell from the base station at the first subframe.

3. The method of claim 2, wherein the downlink control information includes scheduling information of the downlink data.

4. The method of claim 2, wherein a carrier indicator field (CIF) of the downlink control information indicates the secondary cell.

5. The method of claim 1, wherein the first subframe configuration is different from the second subframe configuration.

6. The method of claim 1, wherein:

the first subframe is a subframe #(n-k) and the second subframe is a subframe #n, and ‘

k’

is an integer determined based on the first subframe configuration.

7. The method of claim 1, further comprising receiving information on the first subframe configuration and the second subframe configuration via a higher layer.

8. A method for transmitting and receiving signals between a user equipment and a base station in a TDD (Time Division Duplex) wireless communication system, the method comprising:

configuring a first subframe configuration for a primary cell and a second subframe configuration for a secondary cell;

transmitting downlink data via the secondary cell, to the user equipment at a first subframe; and

receiving ACK(ACKnowledgement)/NACK(Negative-ACK) information of the downlink data from the user equipment at a second subframe,

wherein the first subframe is a downlink subframe in both the first subframe configuration for the primary cell and the second subframe configuration for the secondary cell, and

wherein a relationship between the first subframe and the second subframe is defined based on the first subframe configuration for the primary cell.

9. The method of claim 8, further comprising:

transmitting downlink control information via the primary cell to the user equipment at the first subframe.

10. The method of claim 9, wherein the downlink control information includes scheduling information of the downlink data.

11. The method of claim 9, wherein a carrier indicator field (CIF) of the downlink control information indicates the secondary cell.

12. The method of claim 8, wherein the first subframe configuration is different from the second subframe configuration.

13. The method of claim 8, wherein:

the first subframe is a subframe #(n-k) and the second subframe is a subframe #n, and

‘

k’

is an integer determined based on the first subframe configuration.

14. The method of claim 8, further comprising transmitting information on the first subframe configuration and the second subframe configuration via a higher layer.