# US 12,225,462 B2 · Control information transmission method and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,462 B2 - Document ID: US12225462B2 - Status: Granted - Kind: B2 - Application number: 17/169,846 - Filed: 2021-02-08 - Published: 2021-06-03 - Granted: 2025-02-11 - Earliest claimed: 2018-08-09 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Wenwen Huang; Meng Hua; Xiaolei Tie; Shurong Jiao - Web page: https://patentgrep.com/patent/US12225462B2 ## CPC - H04W 52/0225: {using monitoring of external events, e.g. the presence of a signal} - H04W 52/0235: {where the received signal is a power saving command} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0082: {at predetermined intervals} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 52/0212: {managed by the network, e.g. network or access point is leader and terminal is follower} - H04W 52/0274: {by switching on or off the equipment or parts thereof} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 27/2602: {Signal structure} - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract This application discloses a control information transmission method and device, and relates to the field of communications technologies, to reduce power consumption of UE. The control information transmission method provided in embodiments of this application includes: receiving, by user equipment UE, first indication information sent by a base station, where the first indication information indicates a first time window; and stopping, by the UE, monitoring a physical downlink control channel PDCCH in the first time window. ## Claims ### Claim 1 A method, comprising: receiving configuration information, wherein the configuration information comprises at least a first group identifier and a second group identifier, the first group identifier corresponds to a first group of search space sets, and the second group identifier corresponds to a second group of search space sets; receiving first indication information, wherein the first indication information is related to the first group identifier and indicates user equipment (UE) to stop monitoring physical downlink control channel (PDCCH) on a first carrier which the first group of search space sets is on; and stopping monitoring the PDCCH on the first carrier which the first group of search space sets is on. ### Claim 2 (depends on 1) The method according to claim 1, wherein receiving the first indication information comprises: receiving the first indication information in a second carrier which a third group of search space sets is on. ### Claim 3 (depends on 1) The method according to claim 1, wherein the method further comprises: receiving a second indication information, wherein the second indication information is related to the second group identifier and indicates the UE to monitor PDCCH on a third carrier which the second group of search space sets is on; and monitoring the PDCCH on the third carrier which the second group of search space sets is on. ### Claim 4 A method, comprising: sending configuration information, wherein the configuration information comprises at least a first group identifier and a second group identifier, the first group identifier corresponds to a first group of search space sets, and the second group identifier corresponds to a second group of search space sets; and sending first indication information, wherein the first indication information is related to the first group identifier and indicates user equipment (UE) to stop monitoring physical downlink control channel (PDCCH) on a first carrier which the first group of search space sets is on. ### Claim 5 (depends on 4) The method according to claim 4, wherein sending the first indication information comprises: sending the first indication information in a second carrier which a third group of search space sets is on. ### Claim 6 (depends on 4) The method according to claim 4, wherein the method further comprises: sending a second indication information, wherein the second indication information is related to the second group identifier and indicates the UE to monitor PDCCH on a third carrier which the second group of search space sets is on. ### Claim 7 An apparatus, comprising one or more processors coupled to one or more memories storing programming instructions for execution by the one or more processors to cause the apparatus to perform a method comprising: receiving configuration information, wherein the configuration information comprises at least a first group identifier and a second group identifier, the first group identifier corresponds to a first group of search space sets, and the second group identifier corresponds to a second group of search space sets; receiving first indication information, wherein the first indication information is related to the first group identifier and indicates the apparatus to stop monitoring physical downlink control channel (PDCCH) on a first carrier which the first group of search space sets is on; and stopping monitoring the PDCCH on the first carrier which the first group of search space sets is on. ### Claim 8 (depends on 7) The apparatus according to claim 7, wherein receiving the first indication information comprises: receiving the first indication information in a second carrier which a third group of search space sets is on. ### Claim 9 (depends on 7) The apparatus according to claim 7, wherein the method further comprises: receiving a second indication information, wherein the second indication information is related to the second group identifier and indicates the apparatus to monitor PDCCH on a third carrier which the second group of search space sets is on; and monitoring the PDCCH on the third carrier which the second group of search space sets is on. ### Claim 10 An apparatus, comprising one or more processors coupled to one or more memories storing programming instructions for execution by the one or more processors to cause the apparatus performs operations comprising: sending configuration information, wherein the configuration information comprises at least a first group identifier and a second group identifier, the first group identifier corresponds to a first group of search space sets, and the second group identifier corresponds to a second group of search space sets; and sending first indication information, wherein the first indication information is related to the first group identifier and indicates user equipment (UE) to stop monitoring physical downlink control channel (PDCCH) on a first carrier which the first group of search space sets is on. ### Claim 11 (depends on 10) The apparatus according to claim 10, wherein sending the first indication information comprises: sending the first indication information in a second carrier which a third group of search space sets is on. ### Claim 12 (depends on 10) The apparatus according to claim 10, wherein the operations further comprise: sending a second indication information, wherein the second indication information is related to the second group identifier and indicates the UE to monitor PDCCH on a third carrier which the second group of search space sets is on. ### Claim 13 (depends on 1) The method according to claim 1, wherein the first carrier is a secondary carrier. ### Claim 14 (depends on 4) The method according to claim 4, wherein the first carrier is a secondary carrier. ### Claim 15 (depends on 7) The apparatus according to claim 7, wherein the first carrier is a secondary carrier. ### Claim 16 (depends on 10) The apparatus according to claim 10, wherein the first carrier is a secondary carrier. ### Claim 17 (depends on 3) The method according to claim 3, wherein the first indication information and the second indication information is carried by downlink control information (DCI). ### Claim 18 (depends on 6) The method according to claim 6, wherein the first indication information and the second indication information is carried by downlink control information (DCI). ### Claim 19 (depends on 9) The apparatus according to claim 9, wherein the first indication information and the second indication information is carried by downlink control information (DCI). ### Claim 20 (depends on 12) The apparatus according to claim 12, wherein the first indication information and the second indication information is carried by downlink control information (DCI).