# US 11,445,388 B2 · Communication method and apparatus for indicating beam quality > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,388 B2 - Document ID: US11445388B2 - Status: Granted - Kind: B2 - Application number: 16/858,327 - Filed: 2020-04-24 - Published: 2020-08-13 - Granted: 2022-09-13 - Earliest claimed: 2017-11-17 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Peng Guan; Xi Zhang; Min Zhang; Hongzhe Shi - Web page: https://patentgrep.com/patent/US11445388B2 ## CPC - H04W 24/02: Arrangements for optimising operational condition - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04L 1/00: Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)} - 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 24/00: Supervisory, monitoring or testing arrangements - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - 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 This disclosure relates to a communication method and apparatus. The method includes: receiving, by a terminal device, a reference signal sent by a network device; measuring the reference signal to obtain at least one piece of beam quality; and reporting specified differential beam quality indication information to the network device, where the specified differential beam quality indication information is used to indicate that beam quality reporting is abnormal, and/or the specified differential beam quality indication information is used to indicate that beam quality corresponding to the specified differential beam quality indication information is a specified value. A corresponding apparatus is further disclosed. According to the solution in this disclosure, specified differential beam quality indication information is used to indicate that beam quality reporting is abnormal or indicate that beam quality is a specified value, so that beam quality can be accurately reported. ## Claims ### Claim 1 A communication method, comprising: receiving, by a terminal device, a reference signal sent by a network device; measuring, by the terminal device, the reference signal to obtain at least one piece of beam quality; and reporting, by the terminal device, differential beam quality indication information to the network device, wherein the differential beam quality indication information indicates one or more of the following: that beam quality reporting is less than a minimum value of beam quality in a differential range and that beam quality corresponding to the differential beam quality indication information is a reporting threshold value, and wherein reporting, by the terminal device, the differential beam quality indication information to the network device comprises: reporting, by the terminal device, the differential beam quality indication information to the network device responsive to determining that beam quality in the at least one piece of beam quality is greater than the reporting threshold value and less than the minimum value of beam quality in the differential range, wherein the differential beam quality indication information indicates that the beam quality reporting is less than the minimum value of beam quality in the differential range. ### Claim 2 (depends on 1) The method of claim 1, wherein the method further comprises: reporting, by the terminal device, indication information of a reference value of beam quality in the at least one piece of beam quality to the network device. ### Claim 3 (depends on 1) The method of claim 1 A communication method, comprising: receiving, by a terminal device, a reference signal sent by a network device; measuring, by the terminal device, the reference signal to obtain at least one piece of beam quality; and reporting, by the terminal device, differential beam quality indication information to the network device, wherein the differential beam quality indication information indicates one or more of the following: that beam quality reporting is less than a minimum value of beam quality in a differential range and that beam quality corresponding to the differential beam quality indication information is a reporting threshold value, and wherein reporting, by the terminal device, the differential beam quality indication information to the network device comprises: reporting, by the terminal device, the differential beam quality indication information to the network device responsive to determining that beam quality corresponding to the differential beam quality indication information is less than the reporting threshold value, wherein the differential beam quality indication information indicates that the beam quality corresponding to the differential beam quality indication information is the reporting threshold value. ### Claim 4 (depends on 3) The method of claim 3, wherein the method further comprises: reporting, by the terminal device, indication information of a reference value of beam quality in the at least one piece of beam quality to the network device. ### Claim 5 A communications apparatus, comprising: a receiver, configured to receive a reference signal sent by a network device; a processor, configured to measure the reference signal to obtain at least one piece of beam quality; and a transmitter, configured to report differential beam quality indication information to the network device, wherein the differential beam quality indication information indicates one or more of the following: that beam quality reporting is less than a minimum value of beam quality in a differential range and that beam quality corresponding to the differential beam quality indication information is a reporting threshold value, wherein the transmitter is configured to report the differential beam quality indication information to the network device responsive to determining that beam quality in the at least one piece of beam quality is greater than the reporting threshold value and less than the minimum value of beam quality in the differential range, wherein the differential beam quality indication information indicates that the beam quality reporting is less than the minimum value of beam quality in the differential range. ### Claim 6 (depends on 5) The communications apparatus of claim 5, wherein the transmitter is further configured to report indication information of a reference value of beam quality in the at least one piece of beam quality to the network device. ### Claim 7 A communications apparatus, comprising: a receiver, configured to receive a reference signal sent by a network device; a processor, configured to measure the reference signal to obtain at least one piece of beam quality; and a transmitter, configured to report differential beam quality indication information to the network device, wherein the differential beam quality indication information indicates one or more of the following: that beam quality reporting is less than a minimum value of beam quality in a differential range and that beam quality corresponding to the differential beam quality indication information is a reporting threshold value, and wherein the transmitter is configured to report the differential beam quality indication information to the network device responsive to determining that the beam quality corresponding to the differential beam quality indication information is less than the reporting threshold value, wherein the differential beam quality indication information indicates that the beam quality corresponding to the differential beam quality indication information is the reporting threshold value. ### Claim 8 (depends on 7) The communications apparatus of claim 7, wherein the transmitter is further configured to report indication information of a reference value of beam quality in the at least one piece of beam quality to the network device.