# US 12,009,889 B2 · Uplink data transmission method, user equipment, 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 12,009,889 B2 - Document ID: US12009889B2 - Status: Granted - Kind: B2 - Application number: 17/798,736 - Filed: 2021-02-02 - Published: 2023-03-23 - Granted: 2024-06-11 - Earliest claimed: 2020-02-13 - Assignees: Beijing Unisoc Communications Technology Co., Ltd. - Applicants: Beijing Unisoc Communications Technology Co., Ltd. - Inventors: Dawei Ma - Web page: https://patentgrep.com/patent/US12009889B2 ## CPC - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity - H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection} - H04L 5/0023: {Time-frequency-space} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - 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 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 An uplink data transmission method, a user equipment, and a readable storage medium are provided. The method includes: receiving DCI, wherein the DCI includes a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field includes indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field includes transmission precoding matrix indication information corresponding to each of the two or more transmission beams; determining a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to the transmission beam; and transmitting uplink data based on the transmission precoding matrix corresponding to each transmission beam. By the method, the transmission precoding matrices corresponding to multiple transmission beams are indicated in DCI, thereby improving reliability of uplink data transmission. ## Claims ### Claim 1 An uplink data transmission method, comprising: receiving Downlink Control Information (DCI), wherein the DCI comprises a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field comprises indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field comprises transmission precoding matrix indication information corresponding to each of the two or more transmission beams; determining a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam; and transmitting uplink data based on the transmission precoding matrix corresponding to each transmission beam. ### Claim 2 (depends on 1) The method according to claim 1, wherein the precoding information field comprises two or more pieces of transmission precoding matrix indication information which are respectively associated with all the transmission beams in one-to-one correspondence. ### Claim 3 (depends on 2) The method according to claim 2, wherein the transmission precoding matrix indication information is a transmission precoding matrix index value. ### Claim 4 (depends on 3) The method according to claim 3, wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises: determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to each transmission beam. ### Claim 5 (depends on 2) The method according to claim 2, wherein the two or more transmission beams corresponding to the to-be-transmitted uplink data comprise a first transmission beam and at least one other transmission beam rather than the first transmission beam; the transmission precoding matrix indication information corresponding to the first transmission beam is a transmission precoding matrix index value corresponding to the first transmission beam; the transmission precoding matrix indication information corresponding to the at least one other transmission beam is position information of the transmission precoding matrix corresponding to the at least one other transmission beam in a transmission precoding matrix index value set; and the transmission precoding matrix index value set comprises the transmission precoding matrix index value corresponding to the first transmission beam, and the transmission precoding matrices in the transmission precoding matrix index value set are disposed in a same precoding matrix table, and have a same number of layers. ### Claim 6 (depends on 5) The method according to claim 5, wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises: determining the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the first transmission beam; determining at least one transmission precoding matrix index value corresponding to the at least one other transmission beam in the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the at least one other transmission beam; and determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to each transmission beam. ### Claim 7 (depends on 1) The method according to claim 1, wherein the precoding information field comprises a piece of transmission precoding matrix indication information which corresponds to all the transmission beams. ### Claim 8 (depends on 7) The method according to claim 7, wherein the transmission precoding matrix indication information corresponding to all the transmission beams is first code point indication information, code points indicated by the first code point indication information correspond to the transmission precoding matrices corresponding to all the transmission beams, and a number of the transmission precoding matrices corresponding to the code points indicated by the first code point indication information matches a number of all the transmission beams. ### Claim 9 (depends on 8) The method according to claim 8, wherein the code points indicated by each first code point indication information correspond to one transmission precoding matrix, or two or more transmission precoding matrices. ### Claim 10 (depends on 9) The method according to claim 9, wherein the code points indicated by the first code point indication information further correspond to Phase Tracking Reference Signal (PTRS) port configuration information corresponding to all the transmission beams, and a number of the PTRS port configuration information corresponding to the code points indicated by the first code point indication information matches the number of all the transmission beams, and the method further comprises: determining a PTRS port corresponding to each transmission beam based on the PTRS port configuration information corresponding to the first code point indication information and the transmission precoding matrix corresponding to the first code point indication information, and transmitting the uplink data based on the transmission precoding matrix and the PTRS port corresponding to each transmission beam. ### Claim 11 (depends on 1) The method according to claim 1, wherein the DCI further comprises a PTRS port indication information field which comprises PTRS port configuration information corresponding to each transmission beam; and the method further comprises: determining a PTRS port corresponding to each transmission beam based on the PTRS configuration information, so as to transmit the uplink data based on the transmission precoding matrix and the PTRS port corresponding to each transmission beam. ### Claim 12 (depends on 11) The method according to claim 11, wherein the PTRS port indication information field comprises two or more pieces of PTRS port configuration information which are respectively associated with the two or more transmission beams in one-to-one correspondence. ### Claim 13 (depends on 11) The method according to claim 11, wherein the PTRS port indication information field comprises one piece of PTRS port configuration information which is a second code point indication information, and a number of the PTRS port configuration information corresponding to the code points indicated by the second code point indication information matches a number of the two or more transmission beams. ### Claim 14 A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising computer instructions, which, when executed by a processor, cause the processor to: receive Downlink Control Information (DCI), wherein the DCI comprises a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field comprises indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field comprises transmission precoding matrix indication information corresponding to each of the two or more transmission beams; determine a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam; and transmit uplink data based on the transmission precoding matrix corresponding to each transmission beam. ### Claim 15 A terminal comprising a memory and a processor, wherein the memory stores one or more programs, the one or more programs comprising computer instructions, which, when executed by the processor, cause the processor to: receive Downlink Control Information (DCI), wherein the DCI comprises a sounding reference signal resource indication field and a precoding information field, the sounding reference signal resource indication field comprises indication information of two or more transmission beams corresponding to to-be-transmitted uplink data, and the precoding information field comprises transmission precoding matrix indication information corresponding to each of the two or more transmission beams; determine a transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam; and transmit uplink data based on the transmission precoding matrix corresponding to each transmission beam. ### Claim 16 (depends on 15) The terminal according to claim 15, wherein the precoding information field comprises two or more pieces of transmission precoding matrix indication information which are respectively associated with all the transmission beams in one-to-one correspondence. ### Claim 17 (depends on 16) The terminal according to claim 16, wherein the transmission precoding matrix indication information is a transmission precoding matrix index value. ### Claim 18 (depends on 17) The terminal according to claim 17, wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises: determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to the transmission beam. ### Claim 19 (depends on 16) The terminal according to claim 16, wherein the two or more transmission beams corresponding to the to-be-transmitted uplink data comprise a first transmission beam and at least one other transmission beam rather than the first transmission beam; the transmission precoding matrix indication information corresponding to the first transmission beam is a transmission precoding matrix index value corresponding to the first transmission beam; the transmission precoding matrix indication information corresponding to the at least one other transmission beam is position information of the transmission precoding matrix corresponding to the at least one other transmission beam in a transmission precoding matrix index value set; and the transmission precoding matrix index value set comprises the transmission precoding matrix index value corresponding to the first transmission beam, and the transmission precoding matrices in the transmission precoding matrix index value set are disposed in a same precoding matrix table, and have a same number of layers. ### Claim 20 (depends on 19) The terminal according to claim 19, wherein said determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix indication information corresponding to each transmission beam comprises: determining the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the first transmission beam; determining at least one transmission precoding matrix index value corresponding to the at least one other transmission beam in the transmission precoding matrix index value set based on the transmission precoding matrix indication information corresponding to the at least one other transmission beam; and determining the transmission precoding matrix corresponding to each transmission beam based on the transmission precoding matrix index value corresponding to each transmission beam.