# US 2021/0345308 A1 · Information transmission method and communications apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345308 A1 - Document ID: US20210345308A1 - Status: Published application - Kind: A1 - Application number: 17/371,576 - Filed: 2021-07-09 - Published: 2021-11-04 - Earliest claimed: 2019-01-11 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Xianda LIU; Kunpeng LIU; XU ZHANG; Xiang GAO - Web page: https://patentgrep.com/patent/US20210345308A1 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/0046: {Code rate detection or code type detection (H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091)} - H04L 1/0072: {Error control for data other than payload data, e.g. control data} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - 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 This application provides an information transmission method and a communications apparatus. The method includes: determining a correspondence between a first aggregation level (AL) set associated with a plurality of first physical downlink control channel (PDCCH) candidates and a second AL set associated with a plurality of second PDCCH candidates; and monitoring at least one of the plurality of first PDCCH candidates and/or at least one of the plurality of second PDCCH candidates based on the correspondence. ## Claims ### Claim 1 A method, comprising: determining a correspondence between a first aggregation level (AL) set associated with a plurality of first physical downlink control channel (PDCCH) candidates and a second AL set associated with a plurality of second PDCCH candidates; and monitoring at least one of the following based on the correspondence: at least one of the plurality of first PDCCH candidates, or at least one of the plurality of second PDCCH candidates. ### Claim 2 (depends on 1) The method according to claim 1, wherein the correspondence is a correspondence between at least one first AL in the first AL set and at least one second AL in the second AL set, and the monitoring at least one of the following based on the correspondence comprises: determining a third AL of a third PDCCH candidate in the plurality of first PDCCH candidates, wherein the third AL belongs to the first AL set; determining at least one fourth AL based on the correspondence, wherein the at least one fourth AL is one or more values in the second AL set; and monitoring a fourth PDCCH candidate associated with the at least one fourth AL, wherein the fourth PDCCH candidate is at least one of the plurality of second PDCCH candidates. ### Claim 3 (depends on 1) The method according to claim 1, wherein the correspondence is a correspondence between at least one second AL in the second AL set and at least one first AL in the first AL set, and the monitoring at least one of the following based on the correspondence comprises: determining a fifth AL of a fifth PDCCH candidate in the plurality of second PDCCH candidates, wherein the fifth AL is one value in the second AL set; determining at least one sixth AL based on the correspondence, wherein the at least one sixth AL is one or more values in the first AL set; and monitoring a sixth PDCCH candidate associated with the at least one sixth AL, wherein the sixth PDCCH candidate is at least one of the plurality of first PDCCH candidates. ### Claim 4 (depends on 2) The method according to claim 2, wherein a monitor occasion of the third PDCCH candidate is earlier than a monitor occasion of the plurality of second PDCCH candidates; or a monitor occasion of the fifth PDCCH candidate is earlier than a monitor occasion of the plurality of first PDCCH candidates. ### Claim 5 (depends on 1) The method according to claim 1, wherein the correspondence comprises at least one of the following: one first AL in the first AL set corresponds to one second AL in the second AL set, one first AL in the first AL set corresponds to a plurality of second ALs in the second AL set, a plurality of first ALs in the first AL set correspond to a plurality of second ALs in the second AL set, one second AL in the second AL set corresponds to one first AL in the first AL set, or one second AL in the second AL set corresponds to a plurality of first ALs in the first AL set. ### Claim 6 A transmission method, comprising: determining a correspondence between a first aggregation level (AL) set associated with a plurality of first physical downlink control channel (PDCCH) candidates and a second AL set associated with a plurality of second PDCCH candidates; and based on the correspondence, sending at least one of the following: first downlink control information (DCI) on at least one of the plurality of first PDCCH candidates, or second DCI on at least one of the plurality of second PDCCH candidates. ### Claim 7 (depends on 6) The method according to claim 6, wherein the correspondence is a correspondence between at least one first AL in the first AL set and at least one second AL in the second AL set, and the sending at least one of the following comprises: determining a third AL corresponding to a third PDCCH candidate for sending the first DCI, wherein the third AL is one value in the first AL set; determining at least one fourth AL based on the correspondence, wherein the at least one fourth AL is one value in the second AL set; or sending the second DCI on a fourth PDCCH candidate associated with the at least one fourth AL, wherein the fourth PDCCH candidate is at least one of the plurality of second PDCCH candidates. ### Claim 8 (depends on 6) The method according to claim 6, wherein the correspondence is a correspondence between at least one second AL in the second AL set and at least one first AL in the first AL set, and the sending at least one of the following comprises: determining a fifth AL corresponding to a fifth PDCCH candidate for sending the second DCI, wherein the fifth AL is one value in the second AL set; determining at least one sixth AL based on the correspondence, wherein the at least one sixth AL is one value in the first AL set; or sending the first DCI on a sixth PDCCH candidate associated with the at least one sixth AL, wherein the sixth PDCCH candidate is at least one of the plurality of first PDCCH candidates. ### Claim 9 (depends on 6) The method according to claim 6, wherein when the second DCI is sent on the at least one of the plurality of second PDCCH candidates based on the correspondence, an occasion for sending the first DCI is earlier than an occasion for sending the second DCI; or when the first downlink control information (DCI) is sent on the at least one of the plurality of first PDCCH candidates based on the correspondence, an occasion for sending the second DCI is earlier than an occasion for sending the first DCI. ### Claim 10 (depends on 6) The method according to claim 6, wherein the first AL set and the second AL set each comprise at least one value, and the correspondence comprises at least one of the following: one first AL in the first AL set corresponds to one second AL in the second AL set, one first AL in the first AL set corresponds to a plurality of second ALs in the second AL set, a plurality of first ALs in the first AL set correspond to a plurality of second ALs in the second AL set, one second AL in the second AL set corresponds to one first AL in the first AL set, or one second AL in the second AL set corresponds to a plurality of first ALs in the first AL set. ### Claim 11 An apparatus, comprising: at least one processor and a transceiver, wherein, the at least one processor is configured to determine a correspondence between a first aggregation level (AL) set associated with a plurality of first physical downlink control channel (PDCCH) candidates and a second AL set associated with a plurality of second PDCCH candidates; and monitor, via the transceiver, at least one of the following based on the correspondence: at least one of the plurality of first PDCCH candidates, or at least one of the plurality of second PDCCH candidates. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the correspondence is a correspondence between at least one first AL in the first AL set and at least one second AL in the second AL set, and the at least one processor is configured to: determine a third AL of a third PDCCH candidate in the plurality of first PDCCH candidates, wherein the third AL belongs to the first AL set; determine at least one fourth AL based on the correspondence, wherein the at least one fourth AL is one or more values in the second AL set; and monitor, via the transceiver, a fourth PDCCH candidate associated with the at least one fourth AL, wherein the fourth PDCCH candidate is at least one of the plurality of second PDCCH candidates. ### Claim 13 (depends on 11) The apparatus according to claim 11, wherein the correspondence is a correspondence between at least one second AL in the second AL set and at least one first AL in the first AL set, and the at least one processor is configured to: determine a fifth AL of a fifth PDCCH candidate in the plurality of second PDCCH candidates, wherein the fifth AL is one value in the second AL set; determine at least one sixth AL based on the correspondence, wherein the at least one sixth AL is one or more values in the first AL set; and monitor, via the transceiver, a sixth PDCCH candidate associated with the at least one sixth AL, wherein the sixth PDCCH candidate is at least one of the plurality of first PDCCH candidates. ### Claim 14 (depends on 12) The apparatus according to claim 12, wherein a monitor occasion of the third PDCCH candidate is earlier than a monitor occasion of the plurality of second PDCCH candidates; or a monitor occasion of the fifth PDCCH candidate is earlier than a monitor occasion of the plurality of first PDCCH candidates. ### Claim 15 (depends on 11) The apparatus according to claim 11, wherein the correspondence comprises at least one of the following: one first AL in the first AL set corresponds to one second AL in the second AL set, one first AL in the first AL set corresponds to a plurality of second ALs in the second AL set, a plurality of first ALs in the first AL set correspond to a plurality of second ALs in the second AL set, one second AL in the second AL set corresponds to one first AL in the first AL set, or one second AL in the second AL set corresponds to a plurality of first ALs in the first AL set. ### Claim 16 An apparatus, comprising: at least one processor and a transceiver, wherein, the at least one processor is configured to determine a correspondence between a first aggregation level (AL) set associated with a first physical downlink control channel (PDCCH) candidate and a second AL set associated with a plurality of second PDCCH candidates; and the transceiver is configured to, based on the correspondence, send at least one of the following: first downlink control information (DCI) on at least one of the plurality of first PDCCH candidates, or second DCI on at least one of the plurality of second PDCCH candidates. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the correspondence is a correspondence between at least one first AL in the first AL set and at least one second AL in the second AL set, and the at least one processor is configured to: determine a third AL corresponding to a third PDCCH candidate for sending the first DCI, wherein the third AL is one value in the first AL set; and determine at least one fourth AL based on the correspondence, wherein the at least one fourth AL is one value in the second AL set; and the transceiver is configured to send the second DCI on a fourth PDCCH candidate associated with the at least one fourth AL, wherein the fourth PDCCH candidate is at least one of the plurality of second PDCCH candidates. ### Claim 18 (depends on 16) The apparatus according to claim 16, wherein the correspondence is a correspondence between at least one second AL in the second AL set and at least one first AL in the first AL set, and the at least one processor is configured to: determine a fifth AL corresponding to a fifth PDCCH candidate for sending the second DCI, wherein the fifth AL is one value in the second AL set; and determine at least one sixth AL based on the correspondence, wherein the at least one sixth AL is one value in the first AL set; and the transceiver is configured to send the first DCI on a sixth PDCCH candidate associated with the at least one sixth AL, wherein the sixth PDCCH candidate is at least one of the plurality of first PDCCH candidates. ### Claim 19 (depends on 16) The apparatus according to claim 16, wherein when the second DCI is sent on the at least one of the plurality of second PDCCH candidates based on the correspondence, an occasion for sending the first DCI is earlier than an occasion for sending the second DCI; or when the first DCI is sent on the at least one of the plurality of first PDCCH candidates based on the correspondence, an occasion for sending the second DCI is earlier than an occasion for sending the first DCI. ### Claim 20 (depends on 16) The apparatus according to claim 16, wherein the first AL set and the second AL set each comprise at least one value, and the correspondence comprises at least one of the following: one first AL in the first AL set corresponds to one second AL in the second AL set, one first AL in the first AL set corresponds to a plurality of second ALs in the second AL set, a plurality of first ALs in the first AL set correspond to a plurality of second ALs in the second AL set, one second AL in the second AL set corresponds to one first AL in the first AL set, or one second AL in the second AL set corresponds to a plurality of first ALs in the first AL set.