# US 2018/0323945 A1 · Method and apparatus for transmitting control information in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323945 A1 - Document ID: US20180323945A1 - Status: Published application - Kind: A1 - Application number: 16/022,225 - Filed: 2018-06-28 - Published: 2018-11-08 - Earliest claimed: 2011-06-29 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Hanbyul SEO; Hakseong KIM - Web page: https://patentgrep.com/patent/US20180323945A1 ## CPC - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 27/2601: {Multicarrier modulation systems} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## 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 ### Claim at position 1 1-14. (canceled) ### Claim 15 A method for receiving a downlink control channel by a communication device in a wireless communication system, the method comprising: determining a resource set for control information, the resource set for control information including a control channel element set; and monitoring downlink control channel candidates on the control channel element set of the resource set for control information in a time unit to detect the downlink control channel, wherein the downlink control channel candidates include nth and (n+1)th downlink control channel candidates of an aggregation level, wherein a spacing between starting positions of the nth and (n+1)th downlink control channel candidates of the aggregation level on the control channel element set depends on a number of control channel elements in the resource set for control information. ### Claim 16 (depends on 15) The method of claim 15, 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 ### Claim 17 (depends on 15) The method of claim 15, wherein at least part of resources other than the resource set for control information in a bandwidth of the time unit are used for physical downlink shared channel (PDSCH) transmission. ### Claim 18 (depends on 15) The method of claim 15, wherein the nth and (n+1)th downlink control channel candidates of the aggregation level are discontinuous on the control channel element set. ### Claim 19 (depends on 15) The method of claim 15, wherein each of the nth and (n+1)th downlink control channel candidates of the aggregation level consists of L consecutive control channel elements, and L represents the aggregation level. ### Claim 20 (depends on 15) The method of claim 15, wherein the downlink control channel candidates include physical downlink control channel candidates, and the downlink control channel includes an PDCCH. ### Claim 21 A communication apparatus for use in a wireless communication system, comprising: a radio frequency (RF) unit; and a processor configured to: determine a resource set for control information, the resource set for control information including a control channel element set, and monitor downlink control channel candidates on the control channel element set of the resource set for control information in a time unit to detect the downlink control channel, wherein the downlink control channel candidates include nth and (n+1)th downlink control channel candidates of an aggregation level, wherein a spacing between starting positions of the nth and (n+1)th downlink control channel candidates of the aggregation level on the control channel element set depends on a number of control channel elements in the resource set for control information. ### Claim 22 (depends on 21) The communication apparatus of claim 21, 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 ### Claim 23 (depends on 21) The communication apparatus of claim 21, wherein at least part of resources other than the resource set for control information in a bandwidth of the time unit are used for physical downlink shared channel (PDSCH) transmission. ### Claim 24 (depends on 21) The communication apparatus of claim 21, wherein the nth and (n+1)th downlink control channel candidates of the aggregation level are discontinuous on the control channel element set. ### Claim 25 (depends on 21) The communication apparatus of claim 21, wherein each of the nth and (n+1)th downlink control channel candidates of the aggregation level consists of L consecutive control channel elements, and L represents the aggregation level. ### Claim 26 (depends on 21) The communication apparatus of claim 21, wherein the downlink control channel candidates include physical downlink control channel candidates, and the downlink control channel includes an PDCCH.