# US 11,310,790 B2 · Frequency domain resource adjustment method and apparatus, indication information sending method and apparatus, and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,790 B2 - Document ID: US11310790B2 - Status: Granted - Kind: B2 - Application number: 16/786,206 - Filed: 2020-02-10 - Published: 2020-06-04 - Granted: 2022-04-19 - Earliest claimed: 2017-08-11 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Hua Li; Hao Tang; Yi Wang; Zhenfei Tang - Web page: https://patentgrep.com/patent/US11310790B2 ## CPC - H04W 72/04: Wireless resource allocation - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04L 5/00: Arrangements affording multiple use of the transmission path - 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} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/12: Wireless traffic scheduling - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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) ## Abstract A frequency domain resource adjustment and apparatus, and an indication information sending method and apparatus, and a system relate to the field of communications technologies. The method includes: determining, by a network device, to adjust a frequency domain resource of a terminal device from a first frequency domain resource to a second frequency domain resource; sending information about a guard time to the terminal device; determining, by the terminal device, the guard time based on the information about the guard time; and adjusting, by the terminal device, the first frequency domain resource to the second frequency domain resource within the guard time. ## Claims ### Claim 1 A method comprising: receiving, by a terminal device, information about a guard time from a network device; determining, by the terminal device, the guard time based on the information about the guard time, the guard time being a period of time during which the terminal device is configured to change a frequency domain resource for communication of the terminal device; and adjusting, by the terminal device during the guard time, the frequency domain resource for communication from a first frequency domain resource to a second frequency domain resource. ### Claim 2 (depends on 1) The method according to claim 1, wherein the terminal device stops receiving or sending data during the guard time. ### Claim 3 (depends on 1) The method according to claim 1, wherein receiving, by the terminal device, the information about the guard time from the network device comprises: receiving, by the terminal device, downlink control information (DCI) from the network device, wherein the DCI comprises the information about the guard time. ### Claim 4 (depends on 1) The method according to claim 1, wherein the method further comprises: receiving, by the terminal device, indication information from the network device, wherein the indication information instructs the terminal device to adjust the frequency domain resource to the second frequency domain resource; and adjusting, by the terminal device, the frequency domain resource from the first frequency domain resource to the second frequency domain resource comprises: adjusting, by the terminal device, the frequency domain resource from the first frequency domain resource to the second frequency domain resource based on the indication information. ### Claim 5 (depends on 4) The method according to claim 4, wherein the method further comprises: receiving, by the terminal device, first configuration information from the network device, wherein the first configuration information comprises at least one frequency domain resource adjustment combination, and the indication information indicates a first frequency domain resource adjustment combination of the at least one frequency domain resource adjustment combination in the first configuration information, each of the at least one frequency domain resource adjustment combination comprising a frequency domain resource before a frequency domain resource adjustment and a frequency domain resource after the frequency domain resource adjustment, and the first frequency domain resource adjustment combination comprising the first frequency domain resource and the second frequency domain resource. ### Claim 6 (depends on 5) The method according to claim 5, wherein the first configuration information further comprises a length of a guard time respectively corresponding to each of the at least one frequency domain resource adjustment combination. ### Claim 7 (depends on 1) The method according to claim 1, wherein the information about the guard time comprises position information of the guard time in a time domain. ### Claim 8 (depends on 1) The method according to claim 1, wherein the information about the guard time comprises position information of the guard time in a time domain and length information of the guard time. ### Claim 9 (depends on 1) The method according to claim 1, further comprising: receiving, by the terminal device, second configuration information from the network device, wherein the second configuration information comprises at least one guard time position in a time domain, and the information about the guard time indicates a guard time position in the second configuration information. ### Claim 10 (depends on 1) The method according to claim 1, wherein the information about the guard time indicates a scheduling time unit in which a start position of the guard time is located, the start position of the guard time is a start position of a next symbol of a specific symbol in the scheduling time unit, and the specific symbol is a symbol for scheduling downlink control information; or the information about the guard time indicates a scheduling time unit in which an end position of the guard time is located, and the end position of the guard time is a start position of the scheduling time unit. ### Claim 11 An apparatus comprising: a non-transitory memory storage comprising instructions; and one or more processors in communication with the memory storage, wherein the instructions, when executed by the one or more processors, cause the apparatus to: receive information about a guard time from a network device; determine the guard time based on the information about the guard time, the guard time being a period of time during which the apparatus is configured to change a frequency domain resource for communication of the apparatus; and adjust, during the guard time, the frequency domain resource for communication from a first frequency domain resource to a second frequency domain resource within the guard time. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the apparatus stops receiving or sending data during the guard time. ### Claim 13 (depends on 11) The apparatus according to claim 11, wherein the instructions, when executed by the one or more processors, cause the apparatus to further: receive, from the network device, downlink control information (DCI) that comprises the information about the guard time. ### Claim 14 (depends on 11) The apparatus according to claim 11, wherein the instructions, when executed by the one or more processors, cause the apparatus to further: receive indication information from the network device, wherein the indication information instructs the apparatus to adjust the frequency domain resource to the second frequency domain resource; and adjust the frequency domain resource from the first frequency domain resource to the second frequency domain resource based on the indication information. ### Claim 15 (depends on 14) The apparatus according to claim 14, wherein the instructions, when executed by the one or more processors, causes the apparatus to further: receive first configuration information from the network device, wherein the first configuration information comprises at least one frequency domain resource adjustment combination, and the indication information indicates a first frequency domain resource adjustment combination of the at least one frequency domain resource adjustment combination in the first configuration information, each of the at least one frequency domain resource adjustment combination comprising a frequency domain resource before a frequency domain resource adjustment and a frequency domain resource after the frequency domain resource adjustment, and the first frequency domain resource adjustment combination comprising the first frequency domain resource and the second frequency domain resource. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein the first configuration information further comprises a length of a guard time respectively corresponding to each of the at least one frequency domain resource adjustment combination. ### Claim 17 (depends on 11) The apparatus according to claim 11, wherein the information about the guard time comprises position information of the guard time or comprises position information of the guard time and length information of the guard time in a time domain. ### Claim 18 (depends on 11) The apparatus according to claim 11, wherein the instructions, when executed by the one or more processors, causes the apparatus to further: receive second configuration information from the network device, wherein the second configuration information comprises at least one guard time position in a time domain, and the information about the guard time indicates a guard time position in the second configuration information. ### Claim 19 (depends on 11) The apparatus according to claim 11, wherein the information about the guard time indicates a scheduling time unit in which a start position of the guard time is located, the start position of the guard time is a start position of a next symbol of a specific symbol in the scheduling time unit, and the specific symbol is a symbol for scheduling downlink control information; or the information about the guard time indicates a scheduling time unit in which an end position of the guard time is located, and the end position of the guard time is a start position of the scheduling time unit. ### Claim 20 An apparatus comprising: a non-transitory memory storage comprising instructions; and one or more processors in communication with the memory storage, wherein the instructions, when executed by the one or more processors, cause the apparatus to: determine to adjust a frequency domain resource of a terminal device from a first frequency domain resource to a second frequency domain resource for communication of the terminal device; and send information about a guard time to the terminal device, instructing the terminal device to adjust the frequency domain resource of the terminal device from the first frequency domain resource to the second frequency domain resource during the guard time.