# US 11,445,531 B2 · Communication method, communications apparatus, and readable storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,531 B2 - Document ID: US11445531B2 - Status: Granted - Kind: B2 - Application number: 17/039,668 - Filed: 2020-09-30 - Published: 2021-01-21 - Granted: 2022-09-13 - Earliest claimed: 2018-04-16 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Shulan Feng; Yi Wang - Web page: https://patentgrep.com/patent/US11445531B2 ## CPC - H04L 1/1854: {Scheduling and prioritising arrangements} - H04W 72/1268: of uplink data flows - 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)} - H04W 56/0045: {compensating for timing error by altering transmission time} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/535: {based on resource usage policies} - 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 a communication method, a communications apparatus, and a readable storage medium. The communication method includes: determining a second moment based on a first moment and a first processing delay, where the first moment is an estimated earliest moment at which a terminal device can send feedback information for first downlink data, the first processing delay is an estimated delay in processing second downlink data by the terminal device, a time unit used by the second downlink data is after a time unit used by the first downlink data, and the second moment is after the first moment; and sending indication information to the terminal device, where the indication information is used to indicate the terminal device to send feedback information for the second downlink data at the second moment or after the second moment. This application can avoid increasing processing resources, to save resources. ## Claims ### Claim 1 A communication method by a network device, the method comprising: determining, by the network device, a second moment based on a first moment and a first processing delay, wherein the first moment is an estimated earliest moment at which a terminal device in wireless communications with the network device can send feedback information for first downlink data to the network device, wherein the first processing delay is an estimated delay in processing second downlink data by the terminal device, wherein a time unit used by the second downlink data is after a time unit used by the first downlink data, and wherein the second moment is after the first moment; and transmitting indication information, including the determined second moment, to the terminal device to indicate to the terminal device to send feedback information for the second downlink data at or after the second moment. ### Claim 2 (depends on 1) The communication method according to claim 1, wherein an interval between the first moment and the second moment is greater than or equal to the first processing delay. ### Claim 3 (depends on 1) The communication method according to claim 1, wherein the first processing delay is determined based on at least one of the following parameters: a moment corresponding to a last symbol in the time unit used by the second downlink data, a moment corresponding to a last symbol in a symbol that is in the time unit used by the second downlink data and that is to carry a demodulation reference signal (DMRS), a duration required by the terminal device to process the second downlink data, a length of the time unit used by the second downlink data, or a length of a slot corresponding to the second downlink data. ### Claim 4 (depends on 3) The communication method according to claim 3, wherein the first processing delay is T, and T is obtained according to at least any one of the following formulas: T=T1−T2+T3; T=T4; or T=T5; wherein T1 is the moment corresponding to the last symbol in the time unit used by the second downlink data; T2 is the moment corresponding to the last symbol in the symbol that is in the time unit used by the second downlink data and that is to carry the DMRS; T3 is the duration required by the terminal device to process the second downlink data; T4 is the length of the time unit used by the second downlink data; and T5 is the length of the slot corresponding to the second downlink data. ### Claim 5 (depends on 1) The communication method according to claim 1, wherein before the determining a second moment based on a first moment and a first processing delay, the communication method further comprises: receiving capability information sent by the terminal device, and determining the first moment based on the capability information. ### Claim 6 (depends on 3) The communication method according to claim 3, wherein the communication method further comprises: receiving capability information sent by the terminal device, and determining, based on the capability information, the duration required by the terminal device to process the second downlink data. ### Claim 7 A communication method by a terminal device in wireless communications with a network device, the method comprising: receiving indication information from the network device, wherein the indication information comprises indication to the terminal device to send feedback information for second downlink data at or after a second moment; wherein the second moment is determined based on a first moment associated with first downlink data and a first processing delay, wherein the first moment is an estimated earliest moment at which a terminal device can send feedback information for the first downlink data, wherein the first processing delay is an estimated delay in processing the second downlink data by the terminal device, and wherein the second moment is after the first moment; and wherein the second downlink data uses a time unit that is after a time unit used by the first downlink data; and sending the feedback information for the second downlink data based on the indication information. ### Claim 8 (depends on 7) The communication method according to claim 7, wherein the sending the feedback information for the second downlink data based on the indication information comprises: when an interval between the first moment and the second moment is greater than or equal to the first processing delay, sending the feedback information for the second downlink data at the second moment or after the second moment based on the indication information; or when an interval between the first moment and the second moment is less than the first processing delay, determining that the feedback information for the first downlink data is not ACK information. ### Claim 9 (depends on 7) The communication method according to claim 7, wherein an interval between the first moment and the second moment is greater than or equal to the first processing delay. ### Claim 10 (depends on 7) The communication method according to claim 7, wherein the first processing delay is determined based on at least one of the following parameters: a moment corresponding to a last symbol in the time unit used by the second downlink data, a moment corresponding to a last symbol in a symbol that is in the time unit used by the second downlink data and that is to carry a demodulation reference signal (DMRS), a duration required by the terminal device to process the second downlink data, a length of the time unit used by the second downlink data, or a length of a slot corresponding to the second downlink data. ### Claim 11 (depends on 10) The communication method according to claim 10, wherein the first processing delay is T, and T is obtained according to at least any one of the following formulas: T=T1−T2+T3; T=T4; or T=T5; wherein T1 is the moment corresponding to the last symbol in the time unit used by the second downlink data; T2 is the moment corresponding to the last symbol in the symbol that is in the time unit used by the second downlink data and that is used to carry the DMRS; T3 is the duration required by the terminal device to process the second downlink data; T4 is the length of the time unit used by the second downlink data; and T5 is the length of the slot corresponding to the second downlink data. ### Claim 12 (depends on 7) The communication method according to claim 7, wherein before the receiving indication information sent by a network device, the communication method further comprises: sending capability information to the network device, wherein the first moment is determined based on the capability information. ### Claim 13 (depends on 10) The communication method according to claim 10, wherein the communication method further comprises: sending capability information to the network device, wherein the duration required by the terminal device to process the second downlink data is determined based on the capability information. ### Claim 14 A communications apparatus operating as a terminal device, comprising: a transceiver unit, configured to receive indication information sent by a network device, wherein the indication information comprises indication to the communication apparatus to send feedback information for second downlink data at or after a second moment; wherein the second moment is determined based on a first moment associated with first downlink data received at the communication apparatus and a first processing delay, wherein the first moment is an estimated earliest moment at which the communication apparatus can send feedback information for the first downlink data, wherein the first processing delay is an estimated delay in processing the second downlink data by the terminal device, and wherein the second moment is after the first moment; wherein a time unit used by the second downlink data is after a time unit used by the first downlink data; and wherein the transceiver unit is further configured to send the feedback information for the second downlink data based on the indication information. ### Claim 15 (depends on 14) The communications apparatus according to claim 14, wherein the communications apparatus further comprises a processing unit; wherein the processing unit is configured to determine an interval between the first moment and the second moment; and when the interval between the first moment and the second moment is greater than or equal to the first processing delay, the transceiver unit sends the feedback information for the second downlink data at the second moment or after the second moment based on the indication information; or when the interval between the first moment and the second moment is less than the first processing delay, the processing unit determines that the feedback information for the first downlink data is not ACK information. ### Claim 16 (depends on 14) The communications apparatus according to claim 14, wherein an interval between the first moment and the second moment is greater than or equal to the first processing delay. ### Claim 17 (depends on 14) The communications apparatus according to claim 14, wherein the first processing delay is determined based on at least one of the following parameters: a moment corresponding to a last symbol in the time unit used by the second downlink data, a moment corresponding to a last symbol in a symbol that is in the time unit used by the second downlink data and that is used to carry a demodulation reference signal (DMRS), a duration required by the terminal device to process the second downlink data, a length of the time unit used by the second downlink data, or a length of a slot corresponding to the second downlink data. ### Claim 18 (depends on 17) The communications apparatus according to claim 17, wherein the first processing delay is T, and T is obtained according to at least any one of the following formulas: T=T1−T2+T3; T=T4; or T=T5; wherein T1 is the moment corresponding to the last symbol in the time unit used by the second downlink data; T2 is the moment corresponding to the last symbol in the symbol that is in the time unit used by the second downlink data and that is used to carry the DMRS; T3 is the duration required by the terminal device to process the second downlink data; T4 is the length of the time unit used by the second downlink data; and T5 is the length of the slot corresponding to the second downlink data. ### Claim 19 (depends on 14) The communications apparatus according to claim 14, wherein the transceiver unit is specifically configured to: before receiving the indication information sent by the network device, send capability information to the network device, wherein the first moment is determined based on the capability information. ### Claim 20 (depends on 17) The communications apparatus according to claim 17, wherein the transceiver unit is further configured to: send capability information to the network device, wherein the duration required by the terminal device to process the second downlink data is determined based on the capability information.