# US 11,445,492 B2 · Methods for receiving and sending downlink control information, user equipment, and base station > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,492 B2 - Document ID: US11445492B2 - Status: Granted - Kind: B2 - Application number: 16/921,164 - Filed: 2020-07-06 - Published: 2020-10-22 - Granted: 2022-09-13 - Earliest claimed: 2018-01-22 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Yang Liu - Web page: https://patentgrep.com/patent/US11445492B2 ## CPC - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/0446: Resources in time domain, e.g. slots or frames - 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 An information transmission method includes: receiving first downlink control information sent by a base station through a first subslot, the first downlink control information including time-frequency position indication information and repeat count indication information, wherein the time-frequency position indication information is configured to indicate a time-frequency position of a downlink resource bearing target communication data in the first subslot, and the repeat count indication information is configured to indicate a count of repeated transmissions of the target communication data by the base station. ## Claims ### Claim 1 A method for receiving downlink control information, comprising: receiving first downlink control information sent by a base station through a first subslot, the first downlink control information comprising time-frequency position indication information and repeat count indication information, wherein the time-frequency position indication information is configured to indicate a time-frequency position of a downlink resource bearing target communication data in the first subslot, and the repeat count indication information is configured to indicate a count of repeated transmissions of the target communication data by the base station, wherein the count of repeated transmissions indicated by the repeat count indication information is n; determining n second subslots according to the count n indicated by the repeat count indication information and a preset time-frequency position determination rule, the n second subslots being subslots through which the base station repeatedly sends the target communication data; and not executing an operation of receiving second downlink control information in the n second subslots, a type of the second downlink control information being identical with a type of the first downlink control information. ### Claim 2 (depends on 1) The method of claim 1, wherein receiving the first downlink control information sent by the base station through the first subslot comprises: performing blind detection for the first downlink control information in a physical downlink control channel (PDCCH) in the first subslot based on a preset blind detection strategy, the preset blind detection strategy being identical with a strategy for blind detection for short downlink control information (sDCI). ### Claim 3 (depends on 1) The method of claim 1, wherein a length of the first downlink control information is identical with a length of the sDCI. ### Claim 4 (depends on 1) The method of claim 1, wherein the first downlink control information comprises an indication identifier, configured to indicate that the first downlink control information is downlink control information comprising the time-frequency position indication information and the repeat count indication information. ### Claim 5 (depends on 4) The method of claim 4, wherein a length of the indication identifier is one bit. ### Claim 6 A method for sending downlink control information, comprising: scrambling first downlink control information based on a preset radio network temporary identifier (RNTI), a type of the preset RNTI being identical with a type of an RNTI used by a base station to scramble short downlink control information (sDCI), the first downlink control information comprising time-frequency position indication information and repeat count indication information; and sending the scrambled first downlink control information to user equipment (UE) through a first subslot; wherein the time-frequency position indication information is configured to indicate a time-frequency position of a downlink resource bearing target communication data in the first subslot, and the repeat count indication information is configured to indicate a count of repeated transmissions of the target communication data by the base station. ### Claim 7 (depends on 6) The method of claim 6, wherein a length of the first downlink control information is identical with a length of the sDCI. ### Claim 8 (depends on 6) The method of claim 6, wherein the first downlink control information comprises an indication identifier, configured to indicate that the first downlink control information is downlink control information comprising the time-frequency position indication information and the repeat count indication information. ### Claim 9 (depends on 8) The method of claim 8, wherein a length of the indication identifier is one bit. ### Claim 10 User equipment, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to: receive first downlink control information sent by a base station through a first subslot, the first downlink control information comprising time-frequency position indication information and repeat count indication information, wherein the time-frequency position indication information is configured to indicate a time-frequency position of a downlink resource bearing target communication data in the first subslot, and the repeat count indication information is configured to indicate a count of repeated transmissions of the target communication data by the base station, wherein the count of repeated transmissions indicated by the repeat count indication information is n; determine n second subslots according to the count n indicated by the repeat count indication information and a preset time-frequency position determination rule, the n second subslots being subslots through which the base station repeatedly sends the target communication data; and not execute an operation of receiving second downlink control information in the n second subslots, a type of the second downlink control information being identical with a type of the first downlink control information. ### Claim 11 (depends on 10) The user equipment of claim 10, wherein the processor is configured to: perform blind detection for the first downlink control information in a physical downlink control channel (PDCCH) in the first subslot based on a preset blind detection strategy, the preset blind detection strategy being identical with a strategy for blind detection for short downlink control information (sDCI). ### Claim 12 (depends on 10) The user equipment of claim 10, wherein a length of the first downlink control information is identical with a length of the sDCI. ### Claim 13 (depends on 10) The user equipment of claim 10, wherein the first downlink control information comprises an indication identifier, configured to indicate that the first downlink control information is downlink control information comprising the time-frequency position indication information and the repeat count indication information. ### Claim 14 A base station, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to: scramble first downlink control information based on a preset radio network temporary identifier (RNTI), a type of the preset RNTI being identical with a type of an RNTI used by the base station to scramble short downlink control information (sDCI), the first downlink control information comprising time-frequency position indication information and repeat count indication information; and send the scrambled first downlink control information to user equipment (UE) through a first subslot; wherein the time-frequency position indication information is configured to indicate a time-frequency position of a downlink resource bearing target communication data in the first subslot, and the repeat count indication information is configured to indicate a count of repeated transmissions of the target communication data by the base station. ### Claim 15 (depends on 14) The base station of claim 14, wherein a length of the first downlink control information is identical with a length of the sDCI. ### Claim 16 (depends on 14) The base station of claim 14, wherein the first downlink control information comprises an indication identifier, configured to indicate that the first downlink control information is downlink control information comprising the time-frequency position indication information and the repeat count indication information.