METHOD AND DEVICE FOR RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20140247816A1
• Filed: 10/15/2012
• Published: 09/04/2014
• Est. Priority Date: 10/13/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hakseong, Seo, Hanbyul
• Granted Patent: US 9,374,819 B2
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• 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: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

The present invention relates to a wireless communication system. Particularly, the present invention pertains to a method for receiving a PDCCH signal in a wireless communication system and a device therefor, and the method comprises: receiving a subframe that includes a PDCCH search space, monitoring a plurality of PDCCH candidates in the PDCCH search space, and performing an operation according to a PDCCH signal if the PDCCH signal indicated to the UE is detected, wherein if the subframe is a first subframe, the PDCCH search space is configured in a first time domain of the subframe, if the subframe is a second subframe, the PDCCH search space is configured in a second time domain of the subframe, and the first time domain and the second time domain are multiplexed at the subframe by time division multiplexing (TDM).

Claims

1. A method for receiving a physical downlink control channel (PDCCH) signal at a user equipment (UE) in a wireless communication system, the method comprising:

receiving a subframe that includes a PDCCH search space;

monitoring a plurality of PDCCH candidates in the PDCCH search space; and

performing an operation according to a PDCCH signal if the PDCCH signal indicated to the UE is detected,

wherein if the subframe is a first subframe, the PDCCH search space is configured in a first time domain of the subframe, if the subframe is a second subframe, the PDCCH search space is configured in a second time domain of the subframe, and the first time domain and the second time domain are multiplexed at the subframe by time division multiplexing (TDM).

2. The method according to claim 1, wherein the first time domain includes first N number of orthogonal frequency division multiplexing (OFDM) symbols of the subframe, and the second time domain includes OFDM symbols after the (N+1)th OFDM symbol at the subframe.

3. The method according to claim 1, wherein the PDCCH search space is a common search space (CSS) if the subframe is the first subframe, and the PDCCH search space is a user equipment (UE)-specific search space (USS) if the subframe is the second subframe.

4. The method according to claim 1, wherein the first subframe is a subframe for legacy-PDCCH (L-PDCCH) transmission, and the second subframe is a subframe for enhanced-PDCCH (E-PDCCH) transmission.

5. The method according to claim 1, wherein if the PDCCH signal indicated to the UE carries a transmission mode (TM)-common downlink control information (DCI) format, information within the TM-common DCI format is analyzed differently depending on a time domain where the PDCCH signal is detected.

6. The method according to claim 1, wherein if the PDCCH signal indicated to the UE has a first radio network temporary identifier (RNTI), the PDCCH signal includes uplink or downlink scheduling information, and if the PDCCH signal indicated to the UE has a second RNTI, the PDCCH signal includes hybrid automatic repeat request (HARQ) response information on uplink transmission.

7. A user equipment (UE) for use in a wireless communication system, the UE comprising:

a radio frequency (RF) unit; and

a processor,

wherein the processor is configured to receive a subframe that includes a PDCCH search space, monitor a plurality of PDCCH candidates in the PDCCH search space, and perform an operation according to a PDCCH signal if the PDCCH signal indicated to the UE is detected,

wherein if the subframe is a first subframe, the PDCCH search space is configured in a first time domain of the subframe, if the subframe is a second subframe, the PDCCH search space is configured in a second time domain of the subframe, and the first time domain and the second time domain are multiplexed at the subframe by time division multiplexing (TDM).

8. The user equipment according to claim 7, wherein the first time domain includes first N number of orthogonal frequency division multiplexing (OFDM) symbols of the subframe, and the second time domain includes OFDM symbols after the (N+1)th OFDM symbol at the subframe.

9. The user equipment according to claim 7, wherein the PDCCH search space is a common search space (CSS) if the subframe is the first subframe, and the PDCCH search space is a user equipment (UE)-specific search space (USS) if the subframe is the second subframe.

10. The user equipment according to claim 7, wherein the first subframe is a subframe for legacy-PDCCH (L-PDCCH) transmission, and the second subframe is a subframe for enhanced-PDCCH (E-PDCCH) transmission.

11. The user equipment according to claim 7, wherein if the PDCCH signal indicated to the UE carries a transmission mode (TM)-common downlink control information (DCI) format, information within the TM-common DCI format is analyzed differently depending on a time domain where the PDCCH signal is detected.

12. The user equipment according to claim 7, wherein if the PDCCH signal indicated to the UE has a first radio network temporary identifier (RNTI), the PDCCH signal includes uplink or downlink scheduling information, and if the PDCCH signal indicated to the UE has a second RNTI, the PDCCH signal includes hybrid automatic repeat request (HARQ) response information on uplink transmission.