# US 12,113,748 B2 · Method for detecting downlink control channel, method for transmitting downlink control channel, and relevant devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,748 B2 - Document ID: US12113748B2 - Status: Granted - Kind: B2 - Application number: 17/619,058 - Filed: 2020-07-14 - Published: 2022-11-10 - Granted: 2024-10-08 - Earliest claimed: 2019-07-18 - Assignees: Datang Mobile Communications Equipment Co., Ltd. - Applicants: Datang Mobile Communications Equipment Co., Ltd. - Inventors: Lei Wang - Web page: https://patentgrep.com/patent/US12113748B2 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - 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 disclosure related to the field of communication technology, and provides a method for detecting a downlink control channel, a method for transmitting a downlink control channel, and relevant devices. The method performed by a UE includes detecting the downlink control channel within a current slot using a corresponding PDCCH resource pattern in accordance with whether there is an SSB within the current slot. ## Claims ### Claim 1 A method for detecting a downlink control channel performed by a User Equipment (UE), comprising: detecting the downlink control channel within a current slot using a corresponding Physical Downlink Control Channel (PDCCH) resource pattern among multiple different PDCCH resource patterns, in accordance with whether there is a Synchronization Signal Block (SSB) within the current slot, wherein each of the PDCCH resource patterns is suitable for determining resources used for detecting the PDCCH. ### Claim 2 (depends on 1) The method according to claim 1, wherein the detecting the downlink control channel within the current slot using the corresponding PDCCH resource pattern in accordance with whether there is the SSB within the current slot comprises: detecting the downlink control channel using a first PDCCH resource pattern within a slot where the SSB is transmitted, wherein the first PDCCH resource pattern is a PDCCH resource pattern suitable for detecting the downlink control channel within the slot where the SSB is transmitted, the first PDCCH resource pattern occupies consecutive N1 symbols in a time domain and B1 Resource Blocks (RBs) in a frequency domain, and the N1 symbols do not overlap symbols for transmitting the SSB, where N1 is a positive integer greater than or equal to 1, and B1 is a positive integer greater than or equal to 1. ### Claim 3 (depends on 2) The method according to claim 2, wherein the first PDCCH resource pattern is pre-defined or determined in accordance with a resource position of the SSB. ### Claim 4 (depends on 2) The method according to claim 2, wherein within the slot where the SSB is transmitted, physical resources used for transmitting the PDCCH occupies the current slot used for transmitting the SSB and one or more next slots used for transmitting the SSB. ### Claim 5 (depends on 1) The method according to claim 1, wherein the detecting the downlink control channel within the current slot using the corresponding PDCCH resource pattern in accordance with whether there is the SSB within the current slot comprises: detecting the downlink control channel using a second PDCCH resource pattern within a slot where no SSB is transmitted, wherein the second PDCCH resource pattern is a PDCCH resource pattern suitable for detecting the downlink control channel within the slot where no SSB is transmitted, the second PDCCH resource pattern occupies consecutive N2 symbols in a time domain and B2 RBs in a frequency domain, where N2 and B2 are each a positive integer greater than or equal to 1. ### Claim 6 (depends on 5) The method according to claim 5, wherein the second PDCCH resource pattern is configured by a network device through high layer signaling. ### Claim 7 (depends on 1) The method according to claim 1, wherein a quantity of symbols occupied in a time domain by the PDCCH resource pattern where there is an SSB within the current slot is less than a quantity of symbols occupied in a time domain by the PDCCH resource pattern where there is no SSB within the current slot; or a quantity of resource blocks occupied in a frequency domain by the PDCCH resource pattern where there is an SSB within the current slot is greater than or equal to a quantity of resource blocks occupied in a frequency domain by the PDCCH resource pattern where there is no SSB within the current slot. ### Claim 8 A method for transmitting a downlink control channel performed by a network device, comprising: transmitting the downlink control channel within a current slot using a corresponding Physical Downlink Control Channel (PDCCH) resource pattern among multiple different PDCCH resource patterns, in accordance with whether there is a Synchronization Signal Block (SSB) within the current slot, wherein each of the PDCCH resource patterns is suitable for determining resources used for detecting the PDCCH. ### Claim 9 (depends on 8) The method according to claim 8, wherein the transmitting the downlink control channel within the current slot using the corresponding PDCCH resource pattern in accordance with whether there is the SSB within the current slot comprises: transmitting the downlink control channel using a first PDCCH resource pattern within a slot where the SSB is transmitted, wherein the first PDCCH resource pattern is a PDCCH resource pattern suitable for detecting the downlink control channel within the slot where the SSB is transmitted, the first PDCCH resource pattern occupies consecutive N1 symbols in a time domain and B1 Resource Blocks (RBs) in a frequency domain, and the N1 symbols do not overlap symbols for transmitting the SSB, where N1 is a positive integer greater than or equal to 1, and B1 is a positive integer greater than or equal to 1. ### Claim 10 (depends on 9) The method according to claim 9, wherein the first PDCCH resource pattern is pre-defined or determined in accordance with a resource position of the SSB. ### Claim 11 (depends on 9) The method according to claim 9, wherein within the slot where the SSB is transmitted, physical resources used for transmitting the PDCCH occupies the current slot used for transmitting the SSB and one or more next slots used for transmitting the SSB. ### Claim 12 (depends on 8) The method according to claim 8, wherein the transmitting the downlink control channel within the current slot using the corresponding PDCCH resource pattern in accordance with whether there is the SSB within the current slot comprises: transmitting the downlink control channel using a second PDCCH resource pattern within a slot where no SSB is transmitted, wherein the second PDCCH resource pattern is a PDCCH resource pattern suitable for detecting the downlink control channel within the slot where no SSB is transmitted, the second PDCCH resource pattern occupies consecutive N2 symbols in a time domain and B2 RBs in a frequency domain, where N2 and B2 are each a positive integer greater than or equal to 1. ### Claim 13 (depends on 12) The method according to claim 12, wherein the second PDCCH resource pattern is configured by a network device through high layer signaling. ### Claim 14 (depends on 8) The method according to claim 8, wherein a quantity of symbols occupied in a time domain by the PDCCH resource pattern where there is an SSB within the current slot is less than a quantity of symbols occupied in a time domain by the PDCCH resource pattern where there is no SSB within the current slot; or a quantity of resource blocks occupied in a frequency domain by the PDCCH resource pattern where there is an SSB within the current slot is greater than or equal to a quantity of resource blocks occupied in a frequency domain by the PDCCH resource pattern where there is no SSB within the current slot. ### Claim 15 A User Equipment (UE), comprising a transceiver, a memory, a processor, and a program stored in the memory and executed by the processor, wherein the processor is configured to execute the program, so as to detect the downlink control channel within a current slot using a corresponding Physical Downlink Control Channel (PDCCH) resource pattern among multiple different PDCCH resource patterns, in accordance with whether there is a Synchronization Signal Block (SSB) within the current slot, wherein each of the PDCCH resource patterns is suitable for determining resources used for detecting the PDCCH. ### Claim 16 (depends on 15) The UE according to claim 15, wherein the processor is further configured to detect the downlink control channel using a first PDCCH resource pattern within a slot where the SSB is transmitted, wherein the first PDCCH resource pattern is a PDCCH resource pattern suitable for detecting the downlink control channel within the slot where the SSB is transmitted, the first PDCCH resource pattern occupies consecutive N1 symbols in a time domain and B1 Resource Blocks (RBs) in a frequency domain, and the N1 symbols do not overlap symbols for transmitting the SSB, where N1 is a positive integer greater than or equal to 1, and B1 is a positive integer greater than or equal to 1. ### Claim 17 (depends on 16) The UE according to claim 16, wherein the first PDCCH resource pattern is pre-defined or determined in accordance with a resource position of the SSB. ### Claim 18 (depends on 15) The UE according to claim 15, wherein the processor is further configured to detect the downlink control channel using a second PDCCH resource pattern within a slot where no SSB is transmitted, wherein the second PDCCH resource pattern is a PDCCH resource pattern suitable for detecting the downlink control channel within the slot where no SSB is transmitted, the second PDCCH resource pattern occupies consecutive N2 symbols in a time domain and B2 RBs in a frequency domain, where N2 and B2 are each a positive integer greater than or equal to 1. ### Claim 19 (depends on 18) The UE according to claim 18, wherein the second PDCCH resource pattern is configured by a network device through high layer signaling. ### Claim 20 (depends on 15) The UE according to claim 15, wherein a quantity of symbols occupied in a time domain by the PDCCH resource pattern where there is an SSB within the current slot is less than a quantity of symbols occupied in a time domain by the PDCCH resource pattern where there is no SSB within the current slot; or a quantity of resource blocks occupied in a frequency domain by the PDCCH resource pattern where there is an SSB within the current slot is greater than or equal to a quantity of resource blocks occupied in a frequency domain by the PDCCH resource pattern where there is no SSB within the current slot.