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 20130308523A1
• Filed: 01/30/2012
• Published: 11/21/2013
• 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
• Granted Patent: US 9,167,567 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• 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 configuring a backhaul link subframe for a relay node in a base station of a wireless communication system to which a carrier aggregation scheme is applied, the method comprising:

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.

2. The method according to claim 1, wherein a subframe set based on the second subframe configuration is included in a subframe set based on the first subframe configuration.

3. The method according to claim 2, wherein the plurality of subframe configurations are divided into a plurality of groups that include one or more subframe configurations, and the first subframe configuration and the second subframe configuration belong to one group.

4. The method according to claim 1, wherein a downlink control channel transmitted to the relay node through the primary component carrier includes information for scheduling at least one of a downlink data channel transmitted to the relay node through the one or more secondary component carriers and an uplink data channel received from the relay node.

5. The method according to claim 4, wherein an index of a subframe to which the downlink data channel is transmitted through the one or more secondary component carriers is the same as that of a subframe to which the downlink control channel is transmitted through the primary component carrier.

6. A base station in a wireless communication system to which a carrier aggregation scheme is applied, the base station comprising:

a processor determining one of a plurality of subframe configurations as a first backhaul subframe configuration for a primary component carrier allocated to a 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, and determining a second subframe configuration for each of the one or more secondary component carriers by using the configured subframe configuration candidates; and

a wireless communication module transmitting and receiving a signal to and from the relay node in accordance with the first subframe configuration and the second subframe configuration.

7. The base station according to claim 6, wherein a subframe set based on the second subframe configuration is included in a subframe set based on the first subframe configuration.

8. The base station according to claim 7, wherein the plurality of subframe configurations are divided into a plurality of groups that include one or more subframe configurations, and the first subframe configuration and the second subframe configuration belong to one group.

9. The base station according to claim 6, wherein a downlink control channel transmitted to the relay node through the primary component carrier includes information for scheduling at least one of a downlink data channel transmitted to the relay node through the one or more secondary component carriers and an uplink data channel received from the relay node.

10. The base station according to claim 9, wherein an index of a subframe to which the downlink data channel is transmitted through the one or more secondary component carriers is the same as that of a subframe to which the downlink control channel is transmitted through the primary component carrier.