METHOD OF SENDING/RECEIVING CONTROL INFORMATION AND DEVICE THEREFOR

• US 20140341143A1
• Filed: 01/21/2013
• Published: 11/20/2014
• Est. Priority Date: 01/20/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yang, Suckchel, Seo, Dongyoun, Ahn, Joonkui, Seo, Hanbyul, Kim, Kijun
• Granted Patent: US 9,432,984 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04J 11/0053 using co-ordinated multipoint transmission/reception co-ordinated antenna or beam-forming aspects H04B7/022
• CPC Class Codes: H04L 1/0046 Code rate detection or code type detection H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• 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 wireless communication system. In particular, the present invention relates to a method and device for receiving control information regarding a coordinated multi-point (CoMP) set including a first cell and a second cell from a serving/transmitting point in a carrier aggregation (CA) based wireless communication system. The present invention includes: receiving information regarding the size of control information through higher-layer signaling; and monitoring a plurality of control channel candidates for each cell of the CoMP set through the first cell in the CoMP set and detecting the control information, wherein the size of information of the control information candidate for each cell is equally determined based on information regarding the size of control information.

Claims

1. A method for receiving control information about a coordinated multi-point (CoMP) set including a first cell and a second cell from a serving transmission point in a carrier aggregation (CA) based wireless communication system, the method comprising:

receiving information about a control information size through higher layer signaling; and

monitoring a plurality of control channel candidates for each cell of the CoMP set on the first cell of the CoMP set and detecting the control information,

wherein information sizes of the control information candidates for each cell are determined to have a same size based on the information about the control information size.

2. The method according to claim 1, wherein the control information is generated by padding bits when an actual size of the control information is smaller than the control information size.

3. The method according to claim 1, further comprising receiving data through the second cell on the basis of the control information,

wherein the data is transmitted using a part of an entire bandwidth of the second cell when an actual size of the control information is greater than the control information size.

4. The method according to claim 1, wherein the control information comprises transmission mode common control information and transmission mode dedicated control information, and

wherein a size of the transmission mode common control information corresponds to a size of transmission mode common control information for the first cell and a size of the transmission mode dedicated control information is signaled through the higher layer signaling.

5. The method according to claim 1, wherein the control information is downlink control information (DCI) and the control channel candidates are physical downlink control channel (PDCCH) candidates.

6. The method according to claim 1, wherein the higher layer signaling corresponds to radio resource control (RRC) signaling.

7. A user equipment (UE) configured to receive control information about a coordinated multi-point (CoMP) set including a first cell and a second cell from a serving transmission point in a carrier aggregation (CA) based wireless communication system, the UE comprising:

a processor; and

a radio frequency (RF) module,

wherein the processor is configured to receive information about a control information size through higher layer signaling, monitor a plurality of control channel candidates for each cell of the CoMP set on the first cell of the CoMP set and detect the control information,

wherein information sizes of the control information candidates for each cell are determined to have a same size based on the information about the control information size.

8. The UE according to claim 7, wherein the control information is generated by padding bits when an actual size of the control information is smaller than the control information size.

9. The UE according to claim 7, wherein the processor is further configured to receive data through the second cell on the basis of the control information,

wherein the data is transmitted using a part of an entire bandwidth of the second cell when an actual size of the control information is greater than the control information size.

10. The UE according to claim 7, wherein the control information comprises transmission mode common control information and transmission mode dedicated control information, and

wherein a size of the transmission mode common control information corresponds to a size of transmission mode common control information for the first cell and a size of the transmission mode dedicated control information is signaled through the higher layer signaling.

11. The UE according to claim 7, wherein the control information corresponds to DCI and the control channel candidates are PDCCH candidates.

12. The UE according to claim 7, wherein the higher layer signaling corresponds to RRC signaling.