# US 2021/0242926 A1 · Method for configuring aperiodic channel state information-reference signal, network device, and terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242926 A1 - Document ID: US20210242926A1 - Status: Published application - Kind: A1 - Application number: 17/234,839 - Filed: 2021-04-20 - Published: 2021-08-05 - Earliest claimed: 2018-10-30 - Assignees: Vivo Mobile Communication Co., Ltd. - Applicants: Vivo Mobile Communication Co., Ltd. - Inventors: Yu Yang; Peng Sun - Web page: https://patentgrep.com/patent/US20210242926A1 ## CPC - H04B 7/088: {using beam selection} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0628: {Diversity capabilities} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04W 8/24: Transfer of terminal data - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 72/04: Wireless resource allocation - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04B: TRANSMISSION - 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 discloses a method for configuring an aperiodic channel state information-reference signal, a network device, and a terminal. The method includes: obtaining terminal capability information; determining a threshold of an aperiodic channel state information-reference signal CSI-RS based on measurement behavior of the aperiodic CSI-RS and the terminal capability information; and sending the threshold to a terminal. ## Claims ### Claim 1 A method for configuring an aperiodic Channel State Information-Reference Signal (CSI-RS), applied to a terminal, comprising: sending terminal capability information to a network device; determining a threshold of an aperiodic CSI-RS, wherein the threshold is determined based on measurement behavior of the aperiodic CSI-RS and the terminal capability information; and determining a receive beam of the aperiodic CSI-RS based on the threshold. ### Claim 2 (depends on 1) The method for configuring an aperiodic CSI-RS according to claim 1, wherein in a case that the measurement behavior is beam measurement, the threshold is a value indicated by a specific parameter in the terminal capability information. ### Claim 3 (depends on 1) The method for configuring an aperiodic CSI-RS according to claim 1, wherein in a case that the measurement behavior is Channel State Information (CSI) measurement and a value indicated by a specific parameter in the terminal capability information is greater than a preset value, the threshold is one of the following values, wherein the value is: a maximum value that is in optional values of the specific parameter and that is less than the preset value; a minimum value that is in optional values of the specific parameter and that is less than the preset value; or a specified value that is less than the preset value. ### Claim 4 (depends on 3) The method for configuring an aperiodic CSI-RS according to claim 3, wherein the specific parameter is a beam switching timing of the aperiodic CSI-RS. ### Claim 5 (depends on 3) The method for configuring an aperiodic channel state information-reference signal according to claim 3, wherein the step of determining a receive beam of the aperiodic CSI-RS based on the threshold comprises: when a triggering offset of the aperiodic CSI-RS is less than the threshold, determining the receive beam based on default Quasi-Co-Location (QCL) information; and when the triggering offset of the aperiodic CSI-RS is greater than or equal to the threshold, determining the receive beam based on QCL information corresponding to a Transmission Configuration Indication (TCI) state in Downlink Control Information (DCI). ### Claim 6 (depends on 3) The method for configuring an aperiodic CSI-RS according to claim 3, after the step of determining a receive beam of the aperiodic CSI-RS based on the threshold, further comprising: receiving and measuring the aperiodic CSI-RS on the receive beam to obtain a measurement result corresponding to the measurement behavior. ### Claim 7 (depends on 6) The method for configuring an aperiodic CSI-RS according to claim 6, before the step of receiving and measuring the aperiodic CSI-RS on the receive beam to obtain a measurement result corresponding to the measurement behavior, further comprising: receiving measurement behavior information used to indicate the measurement behavior of the aperiodic CSI-RS, wherein the measurement behavior information is used to indicate beam measurement or CSI measurement. ### Claim 8 A terminal, comprising a processor, a memory, and a computer program that is stored in the memory and that can run on the processor, wherein when the processor executes the computer program, a method for configuring an aperiodic CSI-RS comprising: sending terminal capability information to a network device; determining a threshold of an aperiodic CSI-RS, wherein the threshold is determined based on measurement behavior of the aperiodic CSI-RS and the terminal capability information; and determining a receive beam of the aperiodic CSI-RS based on the threshold. ### Claim 9 (depends on 8) The terminal according to claim 8, wherein in a case that the measurement behavior is beam measurement, the threshold is a value indicated by a specific parameter in the terminal capability information. ### Claim 10 (depends on 8) The terminal according to claim 8, wherein in a case that the measurement behavior is CSI measurement and a value indicated by a specific parameter in the terminal capability information is greater than a preset value, the threshold is one of the following values, wherein the value is: a maximum value that is in optional values of the specific parameter and that is less than the preset value; a minimum value that is in optional values of the specific parameter and that is less than the preset value; or a specified value that is less than the preset value. ### Claim 11 (depends on 10) The terminal according to claim 10, wherein the specific parameter is a beam switching timing of the aperiodic CSI-RS. ### Claim 12 (depends on 10) The terminal according to claim 10, wherein the step of determining a receive beam of the aperiodic CSI-RS based on the threshold comprises: when a triggering offset of the aperiodic CSI-RS is less than the threshold, determining the receive beam based on default QCL information; and when the triggering offset of the aperiodic CSI-RS is greater than or equal to the threshold, determining the receive beam based on QCL information corresponding to a TCI state in DCI. ### Claim 13 (depends on 10) The terminal according to claim 10, after the step of determining a receive beam of the aperiodic CSI-RS based on the threshold, further comprising: receiving and measuring the aperiodic CSI-RS on the receive beam to obtain a measurement result corresponding to the measurement behavior. ### Claim 14 (depends on 13) The terminal according to claim 13, before the step of receiving and measuring the aperiodic CSI-RS on the receive beam to obtain a measurement result corresponding to the measurement behavior, further comprising: receiving measurement behavior information used to indicate the measurement behavior of the aperiodic CSI-RS, wherein the measurement behavior information is used to indicate beam measurement or CSI measurement. ### Claim 15 A non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores a computer program, and when a processor executes the computer program, a method for configuring an aperiodic CSI-RS comprising: sending terminal capability information to a network device; determining a threshold of an aperiodic CSI-RS, wherein the threshold is determined based on measurement behavior of the aperiodic CSI-RS and the terminal capability information; and determining a receive beam of the aperiodic CSI-RS based on the threshold. ### Claim 16 (depends on 15) The non-transitory computer readable storage medium according to claim 15, wherein in a case that the measurement behavior is beam measurement, the threshold is a value indicated by a specific parameter in the terminal capability information. ### Claim 17 (depends on 15) The non-transitory computer readable storage medium according to claim 15, wherein in a case that the measurement behavior is CSI measurement and a value indicated by a specific parameter in the terminal capability information is greater than a preset value, the threshold is one of the following values, wherein the value is: a maximum value that is in optional values of the specific parameter and that is less than the preset value; a minimum value that is in optional values of the specific parameter and that is less than the preset value; or a specified value that is less than the preset value. ### Claim 18 (depends on 17) The non-transitory computer readable storage medium according to claim 17, wherein the specific parameter is a beam switching timing of the aperiodic CSI-RS. ### Claim 19 (depends on 17) The non-transitory computer readable storage medium according to claim 17, wherein the step of determining a receive beam of the aperiodic CSI-RS based on the threshold comprises: when a triggering offset of the aperiodic CSI-RS is less than the threshold, determining the receive beam based on default QCL information; and when the triggering offset of the aperiodic CSI-RS is greater than or equal to the threshold, determining the receive beam based on QCL information corresponding to a TCI state in DCI. ### Claim 20 (depends on 17) The non-transitory computer readable storage medium according to claim 17, after the step of determining a receive beam of the aperiodic CSI-RS based on the threshold, further comprising: receiving and measuring the aperiodic CSI-RS on the receive beam to obtain a measurement result corresponding to the measurement behavior.