METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM

• US 20130242853A1
• Filed: 11/08/2011
• Published: 09/19/2013
• Est. Priority Date: 11/08/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Hanbyul, Kim, Kijun
• Granted Patent: US 9,185,694 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04B 7/026 Co-operative diversity, e.g. using fixed or mobile stations as relays
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0619 using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/0001
• CPC Class Codes: H04B 7/15592 Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path cooperative diversity H04B7/024
• CPC Class Codes: H04L 25/03891 Spatial equalizers MIMO diversity systems H04B7/0413
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• 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 method and device for transmitting and receiving data in a wireless communication system. Specifically, the method comprises: a step in which a relay node receives a relay physical downlink control channel (R-PDCCH) including indication information relating to at least one piece of information about a second antenna port and a second scramble ID from a base station by using information about a first antenna port and a first scramble ID; and a step in which the relay node receives a downlink data channel from the base station, wherein the downlink data channel comprises a first downlink data channel region assigned to a portion of a resource block pair to which the relay physical downlink control channel is assigned, and a second downlink data channel region assigned to the other portion of the resource block pair to which the relay physical downlink control channel is assigned, wherein the first downlink data channel region is received using the first antenna and the first scramble ID, and the second downlink data channel region is received using the indication information.

Claims

1. A method of receiving a data from a base station in a wireless communication system supporting a Multi User-Multiple Input Multiple Output (Multi User-MIMO) antenna scheme, comprising the steps of:

receiving a relay physical downlink control channel (R-PDCCH) comprising an indication information related to at least one of a second antenna port information and a second scramble ID from the base station using a first antenna port information and a first scramble ID (scramble identity) by a relay node; and

receiving a downlink data channel from the base station,

wherein a first downlink data channel region, which is assigned to a part of a resource block pair to which the relay physical downlink control channel is assigned among the downlink data channel, is received using the first antenna port and the first scramble ID and wherein a second downlink data channel region, which is assigned to a region except the resource block pair to which the relay physical downlink control channel is assigned, is received using the indication information.

2. The method of claim 1, wherein the second downlink data channel region shares a frequency and time region with a downlink data channel region transmitted to a different relay node.

3. The method of claim 1, wherein the first antenna port information and the first scramble ID are received from the base station via an upper layer signal.

4. The method of claim 1, wherein at least one of the second antenna port information and the second scramble ID is different from at least one of an antenna port information and a scramble ID configured to a different relay node.

5. A relay node in a wireless communication system supporting a Multi User-Multiple Input Multiple Output (Multi User-MIMO) antenna scheme, comprising:

a RF (radio frequency) unit; and

a processor configured to receive a relay physical downlink control channel (R-PDCCH) comprising an indication information related to at least one of a second antenna port information and a second scramble ID from the base station using a first antenna port information and a first scramble ID (scramble identity), the processor configured to receive a downlink data channel from the base station, wherein a first downlink data channel region, which is assigned to a part of a resource block pair to which the relay physical downlink control channel is assigned among the downlink data channel, is received using the first antenna port and the first scramble ID and wherein a second downlink data channel region, which is assigned to a region except the resource block pair to which the relay physical downlink control channel is assigned, is received using the indication information.

6. The relay node of claim 5, wherein the second downlink data channel region shares a prescribed frequency and time region with a downlink data channel region transmitted to a different relay node.

7. The relay node of claim 5, wherein the first antenna port information and the first scramble ID are configured via an upper layer signal from the base station.

8. The relay node of claim 5, wherein at least one of the second antenna port information and the second scramble ID is different from an antenna port information and a scramble ID configured to a different relay node.

9. A method of transmitting a data, which is transmitted by a base station in a wireless communication system supporting a Multi User-Multiple Input Multiple Output (Multi User-MIMO) antenna scheme, comprising the steps of:

transmitting a relay physical downlink control channel (R-PDCCH) comprising an indication information related to at least one of a second antenna port information and a second scramble ID from the base station using a first antenna port information and a first scramble ID (scramble identity) to a relay node; and

transmitting a downlink data channel to the relay node,

wherein a first downlink data channel region, which is assigned to a part of a resource block pair to which the relay physical downlink control channel is assigned among the downlink data channel, is transmitted using the first antenna port and the first scramble ID and wherein a second downlink data channel region, which is assigned to a region except the resource block pair to which the relay physical downlink control channel is assigned, is transmitted using the indication information.

10. The method of claim 9, wherein the second downlink data channel region shares a frequency and time region with a downlink data channel region transmitted to a different relay node.

11. The method of claim 9, wherein the first antenna port information and the first scramble ID are transmitted to the relay node via an upper layer signal.

12. The method of claim 9, wherein at least one of the second antenna port information and the second scramble ID is different from at least one of an antenna port information and a scramble ID configured to a different relay node.

13. A base station in a wireless communication system supporting a Multi User-Multiple Input Multiple Output (Multi User-MIMO) antenna scheme, comprising:

an RF (radio frequency) unit; and

a processor configured to transmit a relay physical downlink control channel (R-PDCCH) comprising an indication information related to at least one of a second antenna port information and a second scramble ID to a relay node using a first antenna port information and a first scramble ID (scramble identity), the processor configured to transmit a downlink data channel to the relay node, wherein a first downlink data channel region, which is assigned to a part of a resource block pair to which the relay physical downlink control channel is assigned among the downlink data channel, is transmitted using the first antenna port and the first scramble ID and wherein a second downlink data channel region, which is assigned to a region except the resource block pair to which the relay physical downlink control channel is assigned, is transmitted using the indication information.

14. The base station of claim 13, wherein the second downlink data channel region shares a frequency and time region with a downlink data channel region transmitted to a different relay node.

15. The base station of claim 13, wherein the first antenna port information and the first scramble ID are transmitted to the relay node via an upper layer signal.

16. The base station of claim 13, wherein at least one of the second antenna port information and the second scramble ID is different from at least one of an antenna port information and a scramble ID configured to a different relay node.