# US 2026/0100733 A1 · Methods, architectures, apparatuses and systems for precoder reporting > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0100733 A1 - Document ID: US20260100733A1 - Status: Published application - Kind: A1 - Application number: 18/906,597 - Filed: 2024-10-04 - Published: 2026-04-09 - Earliest claimed: 2024-10-04 - Applicants: InterDigital Patent Holdings, Inc. - Inventors: Salah Elhoushy; Afshin Haghighat; Patrick Svedman; Allan Yingming Tsai; Yifan Li; Chia-Hung Wei; Benoit Pelletier; Jyotish Robin; Ravikumar Pragada - Web page: https://patentgrep.com/patent/US20260100733A1 ## CPC - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0478: {Special codebook structures directed to feedback optimisation} - H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection} - H04B: TRANSMISSION ## Abstract Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for reporting of precoders, in particular hybrid precoders for near-field and far-field operation. A wireless transmit/receive unit measures one or more downlink, DL, reference signals, RSs, to obtain a measurement result, determines, based on the measurement result, at least a first set of vectors, determines, based on the measurement result, at least a second set of vectors having complex valued elements, across which phase progression is non-linear, determines precoder information comprising at least the first set of vectors and the second set of vectors, and transmits, to a transmission reception point, information indicating the precoder information. ## Claims ### Claim 1 A wireless transmit/receive unit, WTRU, comprising at least one processor configured to: measure one or more downlink, DL, reference signals, RSs, to obtain a measurement result; determine, based on the measurement result, at least a first set of vectors; determine, based on the measurement result, at least a second set of vectors having complex valued elements, across which phase progression is non-linear; determine precoder information comprising at least the first set of vectors and the second set of vectors; and transmit, to a transmission reception point, information indicating the precoder information. ### Claim 2 (depends on 1) The WTRU of claim 1, wherein: the at least one processor is configured to determine no more than a first maximum number of vectors for the first set of vectors, and no more than a second maximum number of vectors for the second set of vectors. ### Claim 3 (depends on 1) The WTRU of claim 1, wherein the at least one processor is further configured to: determine, based on the measurement result, one or more phase correction vectors; and determine the second set of vectors by respectively applying the one or more phase correction vectors to a determined third set of vectors that respectively are Kronecker products of two vectors having complex valued elements, across which phase progression is linear; and wherein the information indicating the precoder information further comprises information indicative of the one or more phase correction vectors. ### Claim 4 (depends on 3) The WTRU of claim 3, wherein the at least one processor is further configured to: determine the first set of vectors from a first subset of a fourth set of vectors that respectively are Kronecker products of two vectors having complex valued elements, across which phase progression is linear; and determine the third set of vectors from a second subset of the fourth set of vectors. ### Claim 5 (depends on 3) The WTRU of claim 3, wherein the at least one processor is further configured to: apply identical phase correction vectors to the vectors of the third set. ### Claim 6 (depends on 1) The WTRU of claim 1, wherein: the first set of vectors correspond to far-field, FF, precoding and the second set of vectors correspond to near-field, NF, precoding. ### Claim 7 (depends on 1) The WTRU of claim 1, wherein: the precoder information comprises at least one of information indicative of the first set of vectors, information indicative of the second set of vectors. ### Claim 8 (depends on 3) The WTRU of claim 3, wherein the at least one processor is further configured to: apply the one or more phase correction vectors to the third set of determined vectors using respective element-wise multiplication between the vector and the phase correction vector. ### Claim 9 (depends on 1) The WTRU of claim 1, wherein the at least one processor is further configured to: determine, based on the measurement result, a first scaling factor for the first set of vectors and a second scaling factor for the second set of vectors; and apply, before determining the precoder information, the first scaling factor to the first set of vectors and the second scaling factor to the second set of vectors. ### Claim 10 (depends on 1) The WTRU of claim 1, wherein: the first set of vectors respectively are Kronecker products of two vectors having complex valued elements, across which phase progression is linear. ### Claim 11 (depends on 4) The WTRU of claim 4, wherein: at least one factor of the Kronecker products has a single element. ### Claim 12 (depends on 1) The WTRU of claim 1, wherein: the information indicating the precoder information comprises a subset of the vectors of the first set of vectors and the second set of vectors. ### Claim 13 A method, implemented by a wireless transmit/receive unit, WTRU, comprising: measuring one or more downlink, DL, reference signals, RSs, to obtain a measurement result; determining, based on the measurement result, at least a first set of vectors; determining, based on the measurement result, at least a second set of vectors having complex valued elements, across which phase progression is non-linear; determining precoder information comprising at least the first set of vectors and the second set of vectors; and transmitting, to a transmission reception point, information indicating the precoder information. ### Claim 14 (depends on 13) The method of claim 13, wherein: the first set of vectors comprises no more than a first maximum number of vectors, and the second set of vectors comprises no more than a second maximum number of vectors. ### Claim 15 (depends on 13) The method of claim 13, further comprising: determining, based on the measurement result, one or more phase correction vectors; and wherein the second set of vectors are determined by respectively applying the one or more phase correction vectors to a determined third set of vectors that respectively are Kronecker products of two vectors having complex valued elements, across which phase progression is linear; and wherein the information indicating the precoder information further comprises information indicative of the one or more phase correction vectors. ### Claim 16 (depends on 13) The method of claim 13, wherein: the first set of vectors correspond to far-field, FF, precoding and the second set of vectors correspond to near-field, NF, precoding. ### Claim 17 (depends on 13) The method of claim 13, wherein: the precoder information comprises at least one of information indicative of the first set of vectors, information indicative of the second set of vectors. ### Claim 18 (depends on 13) The method of claim 13, further comprising: determining, based on the measurement result, a first scaling factor for the first set of vectors and a second scaling factor for the second set of vectors; and applying, before determining the precoder information, the first scaling factor to the first set of vectors and the second scaling factor to the second set of vectors. ### Claim 19 (depends on 13) The method of claim 13, wherein: the first set of vectors respectively are Kronecker products of two vectors having complex valued elements, across which phase progression is linear. ### Claim 20 (depends on 13) The method of claim 13, wherein: the information indicating the precoder information comprises a subset of the vectors of the first set of vectors and the second set of vectors.