# US 2023/0422264 A1 · Control channel transmitting and receiving method and apparatus 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 2023/0422264 A1 - Document ID: US20230422264A1 - Status: Published application - Kind: A1 - Application number: 18/452,188 - Filed: 2023-08-18 - Published: 2023-12-28 - Earliest claimed: 2017-06-28 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Sungjin PARK; Jeongho YEO; Jinyoung OH - Web page: https://patentgrep.com/patent/US20230422264A1 ## CPC - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 27/2602: {Signal structure} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/569: {of the traffic information} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - 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 Methods and apparatuses of a communication system are provided. A method performed by a terminal includes receiving, from a base station, configuration information for a preemption indication via higher layer signaling, receiving, from the base station, downlink control information (DCI) including a preemption indicator on a physical downlink control channel (PDCCH), the DCI being scrambled by a radio network temporary identifier (RNTI) for the preemption indicator, and identifying resources indicated by the preemption indicator, wherein the preemption indicator indicates the resources where no transmission for the terminal exists. ## Claims ### Claim 1 A method performed by a terminal in a communication system, the method comprising: receiving, from a base station, configuration information for a preemption indication via higher layer signaling; receiving, from the base station, downlink control information (DCI) including a preemption indicator on a physical downlink control channel (PDCCH), the DCI being scrambled by a radio network temporary identifier (RNTI) for the preemption indicator; and identifying resources indicated by the preemption indicator, wherein the preemption indicator indicates the resources where no transmission for the terminal exists. ### Claim 2 (depends on 1) The method of claim 1, wherein the configuration information includes information indicating a type for a unit of symbols and a unit of physical resource block (PRB) groups associated with the preemption indicator. ### Claim 3 (depends on 1) The method of claim 1, wherein uplink resources configured by the base station are excluded from the resources. ### Claim 4 (depends on 1) The method of claim 1, wherein the preemption indicator is applied to a last period associated with the PDCCH. ### Claim 5 (depends on 1) The method of claim 1, wherein the preemption indicator indicates the resources by a unit of symbols and a unit of PRB groups, and wherein the unit of symbols is based on a period associated with the PDCCH. ### Claim 6 A method performed by a base station in a communication system, the method comprising: transmitting, to a terminal, configuration information for a preemption indication via higher layer signaling; and transmitting, to the terminal, downlink control information (DCI) including a preemption indicator indicating resources on a physical downlink control channel (PDCCH), the DCI being scrambled by a radio network temporary identifier (RNTI) for the preemption indicator, wherein the preemption indicator indicates the resources where no transmission for the terminal exists. ### Claim 7 (depends on 6) The method of claim 6, wherein the configuration information includes information indicating a type for a unit of symbols and a unit of physical resource block (PRB) groups associated with the preemption indicator. ### Claim 8 (depends on 6) The method of claim 6, wherein uplink resources configured by the base station are excluded from the resources. ### Claim 9 (depends on 6) The method of claim 6, wherein the preemption indicator is applied to a last period associated with the PDCCH. ### Claim 10 (depends on 6) The method of claim 6, wherein the preemption indicator indicates the resources by a unit of symbols and a unit of PRB groups, and wherein the unit of symbols is based on a period associated with the PDCCH. ### Claim 11 A terminal in a communication system, the terminal comprising: a transceiver; a controller coupled with the transceiver and configured to: receive, from a base station, configuration information for a preemption indication via higher layer signaling, receive, from the base station, downlink control information (DCI) including a preemption indicator on a physical downlink control channel (PDCCH), the DCI being scrambled by a radio network temporary identifier (RNTI) for the preemption indicator, and identify resources indicated by the preemption indicator, wherein the preemption indicator indicates the resources where no transmission for the terminal exists. ### Claim 12 (depends on 11) The terminal of claim 11, wherein the configuration information includes information indicating a type for a unit of symbols and a unit of physical resource block (PRB) groups associated with the preemption indicator. ### Claim 13 (depends on 11) The terminal of claim 11, wherein uplink resources configured by the base station are excluded from the resources. ### Claim 14 (depends on 11) The terminal of claim 11, wherein the preemption indicator is applied to a last period associated with the PDCCH. ### Claim 15 (depends on 11) The terminal of claim 11, wherein the preemption indicator indicates the resources by a unit of symbols and a unit of PRB groups, and wherein the unit of symbols is based on a period associated with the PDCCH. ### Claim 16 A base station in a communication system, the base station comprising: a transceiver; a controller coupled with the transceiver and configured to: transmit, to a terminal, configuration information for a preemption indication via higher layer signaling, and transmit, to the terminal, downlink control information (DCI) including a preemption indicator indicating resources on a physical downlink control channel (PDCCH), the DCI being scrambled by a radio network temporary identifier (RNTI) for the preemption indicator, wherein the preemption indicator indicates the resources where no transmission for the terminal exists. ### Claim 17 (depends on 16) The base station of claim 16, wherein the configuration information includes information indicating a type for a unit of symbols and a unit of physical resource block (PRB) groups associated with the preemption indicator. ### Claim 18 (depends on 16) The base station of claim 16, wherein uplink resources configured by the base station are excluded from the resources. ### Claim 19 (depends on 16) The base station of claim 16, wherein the preemption indicator is applied to a last period associated with the PDCCH. ### Claim 20 (depends on 16) The base station of claim 16, wherein the preemption indicator indicates the resources by a unit of symbols and a unit of PRB groups, and wherein the unit of symbols is based on a period associated with the PDCCH.