METHOD AND APPARATUS FOR RECEIVING DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION

• US 20150382379A1
• Filed: 02/13/2014
• Published: 12/31/2015
• Est. Priority Date: 02/13/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Myoungseob, SEO, Hanbyul, LEE, Seungmin
• Granted Patent: US 9,848,441 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A method for receiving downlink control information by a terminal in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: determining enhanced physical downlink control channel (EPDCCH) candidates per aggregation level in an enhanced physical downlink control channel physical resource block (EPDCCH PRB) set; and performing monitoring in a set of the EPDCCH candidates, wherein enhanced control channel elements (ECCE) constituting the respective EPDCCH candidates are distributed in the EPDCCH PRB set.

Claims

1. A method for enabling a user equipment to receive downlink control information in a wireless communication system, the method comprising the steps of:

determining enhanced physical downlink control channel (EPDCCH) candidates per aggregation level in an enhanced physical downlink control channel physical resource block (EPDCCH PRB) set; and

performing monitoring in a set of the EPDCCH candidates,

wherein enhanced control channel elements (ECCE) constituting the respective EPDCCH candidates are distributed in the EPDCCH PRB set.

2. The method according to claim 1, wherein the (y+1)th (1<

=y<

aggregation level) ECCE of each of the EPDCCH candidates is shifted from the yth ECCE as much as at least a predetermined number of ECCEs.

3. The method according to claim 2, wherein the first ECCE of the (x+1)th (1<

=x<

the number of EPDCCH candidates) EPDCCH candidate and the first ECCE of the xth EPDCCH candidate are distributed to be adjacent to each other as much as a value of the aggregation level or less.

4. The method according to claim 2, wherein the predetermined number is increased if the number of PRB pairs included in the EPDCCH PRB set is increased in the aggregation level 2.

5. The method according to claim 2, wherein the predetermined number is given equally regardless of a size of the EPDCCH PRB set if the aggregation level is greater than 8.

6. The method according to claim 2, wherein the predetermined number corresponds to 5, 5 and 9 if the aggregation level is 4 and the number of RPB pairs included in the EPDCCH PRB set corresponds to 2, 4 and 8.

7. The method according to claim 2, wherein the first ECCE of the EPDCCH PRB set is regarded as next ECCE of the last ECCE of the EPDCCH PRB set when the shift is performed.

8. The method according to claim 1, wherein the predetermined number corresponds to

9. The method according to claim 1, wherein the EPDCCH candidates are determined by the following Equation:

10. The method according to claim 1, wherein the EPDCCH candidates are determined by the following Equation:

11. The method according to claim 1, wherein the EPDCCH candidates are determined by the following Equation:

12. The method according to claim 1, wherein the user equipment measures wideband channel state information for an area corresponding to the EPDCCH PRB set.

13. A user equipment in a wireless communication system, the user equipment comprising:

a reception module; and

a processor,

wherein the processor determines enhanced physical downlink control channel (EPDCCH) candidates per aggregation level in an enhanced physical downlink control channel physical resource block (EPDCCH PRB) set and performs monitoring in a set of the EPDCCH candidates, and

enhanced control channel elements (ECCE) constituting the respective EPDCCH candidates are distributed in the EPDCCH PRB set.