METHOD OF DETECTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME

• US 20150280882A1
• Filed: 11/06/2013
• Published: 10/01/2015
• Est. Priority Date: 11/06/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seungmin, Seo, Hanbyul
• Granted Patent: US 9,667,399 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• 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 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• 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 apparatus for receiving, by a terminal, control information in a wireless communication system supporting a carrier aggregation system. In detail, the method includes a step of receiving control information on a specific subframe through a first carrier and second carrier, wherein, when the control channel type on the first carrier and the control channel type on the second carrier are different from each other in the specific subframe, the control information is received according to the control channel type on one carrier of either the first carrier or second carrier corresponding to predefined monitoring information.

Claims

1. A method of receiving a control information by a user equipment in a wireless communication system supportive of a carrier aggregation system, the method comprising:

receiving the control information in a specific subframe through a first carrier and a second carrier,

wherein if a control channel type on the first carrier is different from that on the second carrier in the specific subframe, the control information is received in accordance with the control channel type on either the first carrier or the second carrier corresponding to a predefined monitoring information.

2. The method of claim 1, wherein a set of subframes for monitoring a control channel of a first control channel type on the first carrier is configured to include a set of subframes for monitoring a control channel of a first control channel type on the second carrier.

3. The method of claim 1, wherein if the control channel type of the first carrier is equal to that of the second carrier, the monitoring information indicates that the second carrier is cross-carrier scheduled by the first carrier.

4. The method of claim 1, wherein if the control channel type of the first carrier is different from that of the second carrier, the monitoring information indicates that each of the first carrier and the second carrier is self-scheduled.

5. The method of claim 1, wherein the second carrier is configured in a manner that a downlink HARQ (hybrid automatic repeat request) set differently in accordance with a type of a control channel for receiving the monitoring information is applied.

6. The method of claim 1, wherein the second carrier is configured in a manner that a predefined downlink HARQ (hybrid automatic repeat request) is applied.

7. The method of claim 1, wherein the second carrier is configured in a manner that an uplink HARQ (hybrid automatic repeat request) set differently in accordance with a type of a control channel for receiving the monitoring information is applied.

8. The method of claim 1, wherein the second carrier is configured in a manner that a predefined uplink HARQ (hybrid automatic repeat request) is applied.

9. The method of claim 1, wherein the control channel type comprises either an enhanced physical downlink control channel (EPDCCH) or a physical downlink control channel (PDCCH).

10. In receiving a control information in a wireless communication system supportive of a carrier aggregation system, a user equipment comprising:

a radio frequency unit; and

a processor,

wherein the processor is configured to receive the control information in a specific subframe through a first carrier and a second carrier,

wherein if a control channel type on the first carrier is different from that on the second carrier in the specific subframe, the control information is received in accordance with the control channel type on either the first carrier or the second carrier corresponding to a predefined monitoring information.