Method and apparatus for transmitting control information in wireless communication system

• US 10,644,860 B2
• Filed: 06/28/2018
• Issued: 05/05/2020
• Est. Priority Date: 06/29/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Hanbyul, Kim, Hakseong
• Primary Examiner(s): Nowlin, Eric
• Application Number:
  US16/022,225
• Publication Number:
  US 20180323945A1
• Time in Patent Office: 677 Days
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• 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: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• 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 pertains to a wireless communication system, and more particularly, to a method of receiving a downlink (DL) control channel in a wireless communication system and an apparatus therefor, and the method comprises the following steps: receiving a radio resource control (RRC) message including resource block (RB) allocation information; receiving a subframe having a plurality of physical RBs; and monitoring a plurality of downlink control channel candidates in a physical RB set corresponding to the RB allocation information from the plurality of physical RBs to detect a downlink control channel allocated to a communication device, wherein the plurality of downlink control channel candidates do not continuously exist in a virtual RB set corresponding to the physical RB set.

Claims

1. A method for receiving a downlink control channel by a communication device in a wireless communication system, the method comprising:

receiving resource information; and

decoding downlink control channel candidates in a resource set based on the received resource information;

wherein the downlink control channel candidates include n^th and (n+1)^th downlink control channel candidates for a given aggregation level;

wherein a spacing between a last resource of the n^th downlink control channel candidate and a first resource of the (n+1)^th downlink control channel candidate in the resource set depends on the given aggregation level.

2. The method of claim 1, wherein the resource set for control information is defined by a resource block set and an orthogonal frequency division multiplexing (OFDM) symbol set in one time unit.

3. The method of claim 2, wherein resources other than resources in the resource set for control information in a bandwidth of the time unit are used for a physical downlink shared channel (PDSCH) transmission.

4. The method of claim 1, wherein the n^th and (n+1)^th downlink control channel candidates of the aggregation level are discontinuous in the control channel element set.

5. The method of claim 1, wherein each of the n^th and (n+1)^th downlink control channel candidates of the aggregation level consists of L consecutive control channel elements, and wherein L represents the aggregation level.

6. The method of claim 1, wherein the downlink control channel candidates include physical downlink control channel candidates, and the downlink control channel includes an PDCCH.

13. The method of claim 1, wherein the spacing between the last resource of the n^th downlink control channel candidate and the first resource of the (n+1)^th downlink control channel candidate in the resource set further depends on a number of control channel elements in the resource set.

14. The method of claim 1, wherein the received resource information is related to frequency resources.

7. A communication apparatus for use in a wireless communication system, comprising:

a transmitter and a receiver; and

a processor, operatively connected to the transmitter and the receiver, configured to;

control the receiver to receive resource information, and

decode downlink control channel candidates in a resource set based on the received resource information,

wherein the downlink control channel candidates include n^th and (n+1)^th downlink control channel candidates for a given aggregation level;

wherein a spacing between a last resource of the n^th downlink control channel candidate and a first resource of the (n+1)^th downlink control channel candidate in the resource set depends on the given aggregation level.

8. The communication apparatus of claim 7, wherein the resource set for control information is defined by a resource block set and an orthogonal frequency division multiplexing (OFDM) symbol set in one time unit.

9. The communication apparatus of claim 8, wherein resources other than resources in the resource set for control information in a bandwidth of the time unit are used for a physical downlink shared channel (PDSCH) transmission.

10. The communication apparatus of claim 7, wherein the n^th and (n+1)^th downlink control channel candidates of the aggregation level are discontinuous in the control channel element set.

11. The communication apparatus of claim 7, wherein each of the n^th and (n+1)^th downlink control channel candidates of the aggregation level consists of L consecutive control channel elements, and wherein L represents the aggregation level.

12. The communication apparatus of claim 7, wherein the downlink control channel candidates include physical downlink control channel candidates, and the downlink control channel includes an PDCCH.

15. The apparatus of claim 7, wherein the spacing between the last resource of the n^th downlink control channel candidate and the first resource of the (n+1)^th downlink control channel candidate in the resource set further depends on a number of control channel elements in the resource set.

16. The apparatus of claim 7, wherein the received resource information is related to frequency resources.