# US 11,445,450 B2 · Uplink data transmission method, terminal device, and base station > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,445,450 B2 - Document ID: US11445450B2 - Status: Granted - Kind: B2 - Application number: 16/874,085 - Filed: 2020-05-14 - Published: 2020-08-27 - Granted: 2022-09-13 - Earliest claimed: 2017-11-16 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yinghao Guo; Wenjie Peng; Yang Zhao - Web page: https://patentgrep.com/patent/US11445450B2 ## CPC - H04W 52/365: {Power headroom reporting} - H04L 41/0806: for initial configuration or provisioning, e.g. plug-and-play - H04W 52/146: {Uplink power control} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 52/265: {taking into account the quality of service QoS} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - 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 transmission method includes: a terminal device receives an uplink grant from a base station; and the terminal device sends a report to the base station, where the report includes a power headroom of each of at least one uplink subcarrier, and/or a power headroom of each of at least one bandwidth part. According to the uplink data transmission method, the terminal device, and the base station in embodiments of this disclosure, a power headroom can be reported at a finer granularity. ## Claims ### Claim 1 A method of uplink data transmission that is applied to a multi-connectivity communications system, comprising: receiving, by a terminal device, an uplink grant from a base station; and sending, by the terminal device, a report to the base station, wherein the report comprises one or more of: a power headroom of at least one uplink subcarrier; and a power headroom of at least one bandwidth part that corresponds to the at least one uplink subcarrier, wherein the report further comprises a plurality of sub reports, each sub report corresponding to each of a plurality of media access control (MAC) entities located in a serving cell of a process in which the terminal device performs multi-connectivity communication, where the plurality of sub reports are sorted in a particular order. ### Claim 2 (depends on 1) The method of claim 1, wherein the method further comprises: in the serving cell, activating, configuring, or reconfiguring at least one of the following that correspond to a first MAC entity of the plurality of MAC entities in the serving cell: an uplink subcarrier, a bandwidth part, and an uplink shared channel; and triggering, by the terminal device, the sub report on the first MAC entity. ### Claim 3 (depends on 1) The method of claim 1, wherein the method further comprises: activating, configuring, or reconfiguring at least one of the following that correspond to a first MAC entity in the plurality of MAC entities: an uplink subcarrier, a bandwidth part, and an uplink shared channel; and triggering, by the terminal device, the sub report only on the first MAC entity. ### Claim 4 (depends on 1) The method of claim 1, wherein sending, by the terminal device, the report to the base station comprises: sending, by the terminal device, the report to the base station in a first reporting manner, wherein the report comprises at least one of the following: identification information of the serving cell, power headroom information corresponding to each uplink subcarrier in the serving cell, power headroom information corresponding to each bandwidth part in the serving cell, maximum transmit power information corresponding to each uplink subcarrier in the serving cell, or maximum transmit power information corresponding to each bandwidth part in the serving cell. ### Claim 5 (depends on 1) The method of claim 1, wherein sending, by the terminal device, the report to the base station comprises: sending, by the terminal device, the report to the base station in a second reporting manner, wherein the report comprises at least one of the following: identification information of the serving cell, power headroom information corresponding to each uplink subcarrier in the serving cell, power headroom information corresponding to each bandwidth part in the serving cell, or maximum transmit power information corresponding to the serving cell. ### Claim 6 (depends on 1) The method of claim 1, wherein the report further comprises first indication information, and the first indication information is used to indicate whether to report power headroom information corresponding to an uplink subcarrier, or is used to indicate whether to report power headroom information corresponding to a bandwidth part. ### Claim 7 (depends on 1) The method of claim 1, wherein the method further comprises: configuring, by the terminal device, corresponding maximum transmit power for each uplink subcarrier, wherein maximum transmit power corresponding to all uplink subcarriers is the same or different; configuring, by the terminal device, corresponding maximum transmit power for each bandwidth part, wherein maximum transmit power corresponding to all bandwidth parts is the same or different; obtaining, by the terminal device from a physical layer, at least one of a type corresponding to each uplink subcarrier, maximum transmit power corresponding to the type, and power headroom information corresponding to the type; or obtaining, by the terminal device from a physical layer, at least one of a type corresponding to each bandwidth part, maximum transmit power corresponding to the type, and power headroom information corresponding to the type. ### Claim 8 (depends on 1) The method of claim 1, wherein the method further comprises: performing, by the terminal device, uplink power control; and after the uplink power control, calculating, by the terminal device, the power headroom of each uplink subcarrier or the power headroom of each bandwidth part. ### Claim 9 A method of uplink data transmission that is applied to a multi-connectivity communications system, comprising: sending, by a base station, an uplink grant to a terminal device; and receiving, by the base station, a report from the terminal device, wherein the report comprises one or more of: a power headroom of at least one uplink subcarrier; and a power headroom of at least one bandwidth part that corresponds to the at least one uplink subcarrier, wherein the report further comprises a plurality of sub reports, each sub report corresponding to each of a plurality of media access control (MAC) entities located in a serving cell of a process in which the terminal device performs multi-connectivity communication, where the plurality of sub reports are sorted in a particular order. ### Claim 10 (depends on 9) The method of claim 9, wherein the report comprises at least one of the following: identification information of the serving cell, power headroom information corresponding to each uplink subcarrier in the serving cell, power headroom information corresponding to each bandwidth part in the serving cell, maximum transmit power information corresponding to each uplink subcarrier in the serving cell, or maximum transmit power information corresponding to each bandwidth part in the serving cell. ### Claim 11 An apparatus comprising: a processor and a memory storing instructions executable by the processor, wherein the instructions cause the processor to perform operations comprising: receiving, an uplink grant from a base station; and sending, a report to the base station, wherein the report comprises one or more of: a power headroom of at least one uplink subcarrier; and a power headroom of at least one bandwidth part that corresponds to the at least one uplink subcarrier, wherein the report further comprises a plurality of sub reports, each sub report corresponding to each of a plurality of media access control (MAC) entities located in a serving cell of a process in which the apparatus performs multi-connectivity communication, where the plurality of sub reports are sorted in a particular order. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the instructions cause the processor to perform further operations comprising: in the serving cell, activating, configuring, or reconfiguring at least one of the following that correspond to a first MAC entity of the plurality of MAC entities in the serving cell: an uplink subcarrier, a bandwidth part, and an uplink shared channel; and triggering, the sub report on the first MAC entity. ### Claim 13 (depends on 11) The apparatus of claim 11, wherein the instructions cause the processor to perform further operations comprising: activating, configuring, or reconfiguring at least one of the following that correspond to a first MAC entity in the plurality of MAC entities: an uplink subcarrier, a bandwidth part, and an uplink shared channel; and triggering, the sub report only on the first MAC entity. ### Claim 14 (depends on 11) The apparatus of claim 11, wherein sending, the report to the base station comprises: sending, the report to the base station in a first reporting manner, wherein the report comprises at least one of the following: identification information of the serving cell, power headroom information corresponding to each uplink subcarrier in the serving cell, power headroom information corresponding to each bandwidth part in the serving cell, maximum transmit power information corresponding to each uplink subcarrier in the serving cell, or maximum transmit power information corresponding to each bandwidth part in the serving cell. ### Claim 15 (depends on 11) The apparatus of claim 11, wherein sending, the report to the base station comprises: sending, the report to the base station in a second reporting manner, wherein the report comprises at least one of the following: identification information of the serving cell, power headroom information corresponding to each uplink subcarrier in the serving cell, power headroom information corresponding to each bandwidth part in the serving cell, or maximum transmit power information corresponding to the serving cell. ### Claim 16 (depends on 11) The apparatus of claim 11, wherein the report further comprises first indication information, and the first indication information is used to indicate whether to report power headroom information corresponding to an uplink subcarrier, or is used to indicate whether to report power headroom information corresponding to a bandwidth part. ### Claim 17 (depends on 11) The apparatus of claim 11, wherein the instructions cause the processor to perform further operations comprising: configuring, corresponding maximum transmit power for each uplink subcarrier, wherein maximum transmit power corresponding to all uplink subcarriers is the same or different; configuring, corresponding maximum transmit power for each bandwidth part, wherein maximum transmit power corresponding to all bandwidth parts is the same or different; obtaining, from a physical layer, at least one of a type corresponding to each uplink subcarrier, maximum transmit power corresponding to the type, and power headroom information corresponding to the type; or obtaining, from a physical layer, at least one of a type corresponding to each bandwidth part, maximum transmit power corresponding to the type, and power headroom information corresponding to the type. ### Claim 18 (depends on 11) The apparatus of claim 11, wherein the instructions cause the processor to perform further operations comprising: performing, uplink power control; and after the uplink power control, calculating, the power headroom of each uplink subcarrier or the power headroom of each bandwidth part. ### Claim 19 An apparatus comprising: a processor and a memory storing instructions executable by the processor, wherein the instructions cause the processor to perform operations comprising: sending, an uplink grant to a terminal device; and receiving, a report from the terminal device, wherein the report comprises one or more of a power headroom of at least one uplink subcarrier; and a power headroom of at least one bandwidth part that corresponds to the at least one uplink subcarrier, wherein the report further comprises a plurality of sub reports, each sub report corresponding to each of a plurality of media access control (MAC) entities located in a serving cell of a process in which the terminal device performs multi-connectivity communication, where the plurality of sub reports are sorted in a particular order. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the report comprises at least one of the following: identification information of the serving cell, power headroom information corresponding to each uplink subcarrier in the serving cell, power headroom information corresponding to each bandwidth part in the serving cell, maximum transmit power information corresponding to each uplink subcarrier in the serving cell, or maximum transmit power information corresponding to each bandwidth part in the serving cell.