# US 2025/0097680 A1 · Deriving angle information in wireless networks covering near-field areas > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0097680 A1 - Document ID: US20250097680A1 - Status: Published application - Kind: A1 - Application number: 18/468,920 - Filed: 2023-09-18 - Published: 2025-03-20 - Earliest claimed: 2023-09-18 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Hyojin LEE; Weimin DUAN; Yu ZHANG - Web page: https://patentgrep.com/patent/US20250097680A1 ## CPC - H04B 7/0695: {using beam selection} - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - G01S 5/0036: {of measured values, i.e. measurement on mobile and position calculation on base station} - G01S 5/08: Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract Disclosed are techniques for wireless sensing. In an aspect, a transmitter device transmits, to at least one receiver device, one or more reference signals on each of a plurality of transmit beams, wherein the plurality of transmit beams corresponds to a plurality of codepoints of a near-field codebook, and wherein each of the plurality of codepoints is parameterized with an angle value and a range value of a corresponding transmit beam of the plurality of transmit beams. ## Claims ### Claim 1 A method of wireless sensing performed by a transmitter device, comprising: transmitting, to at least one receiver device, one or more reference signals on each of a plurality of transmit beams, wherein the plurality of transmit beams corresponds to a plurality of codepoints of a near-field codebook, and wherein each of the plurality of codepoints is parameterized with an angle value and a range value of a corresponding transmit beam of the plurality of transmit beams. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving an indication from a sensing server to transmit the one or more reference signals on each of the plurality of transmit beams based on the near-field codebook. ### Claim 3 (depends on 1) The method of claim 1, wherein the plurality of codepoints is a plurality of steering vectors for the plurality of transmit beams. ### Claim 4 (depends on 1) The method of claim 1, wherein angle values and range values corresponding to the plurality of codepoints are sampled from an entire angular-distance domain. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving at least one measurement report from the at least one receiver device, the at least one measurement report including one or more beam indices and one or more signal strength measurements associated with the one or more beam indices. ### Claim 6 (depends on 5) The method of claim 5, further comprising: determining at least one angle-of-departure (AoD) between the transmitter device and each of the at least one receiver device based on the at least one measurement report. ### Claim 7 (depends on 6) The method of claim 6, further comprising: reporting the at least one AoD to a sensing server. ### Claim 8 (depends on 1) The method of claim 1, further comprising: transmitting, to a sensing server, a capability message indicating that the transmitter device is capable of performing near-field sensing. ### Claim 9 (depends on 8) The method of claim 8, wherein the capability message identifies one or more zones in which the transmitter device is capable of performing the near-field sensing. ### Claim 10 (depends on 1) The method of claim 1, further comprising: receiving a request from a sensing server to perform near-field sensing. ### Claim 11 (depends on 10) The method of claim 10, wherein the request identifies one or more zones in which the transmitter device is requested to perform the near-field sensing. ### Claim 12 (depends on 1) The method of claim 1, wherein the near-field codebook is configured to the transmitter device by a sensing server. ### Claim 13 (depends on 1) The method of claim 1, wherein: the transmitter device is a base station, and the receiver device is a user equipment (UE). ### Claim 14 (depends on 1) The method of claim 1, wherein: the transmitter device is a UE, and the receiver device is a base station. ### Claim 15 (depends on 1) The method of claim 1, wherein: the transmitter device is a first UE, and the receiver device is a second UE. ### Claim 16 A method of wireless sensing performed by a receiver device, comprising: obtaining a plurality of signal strength measurements of one or more reference signals transmitted by a transmitter device on a first transmit beam, wherein the plurality of signal strength measurements is obtained using a corresponding plurality of receive beams of the receiver device, wherein the plurality of receive beams corresponds to a plurality of channel steering vectors, and wherein each of the plurality of channel steering vectors is parameterized with an angle value and a range value of a corresponding receive beam of the plurality of receive beams; determining an angle-of-arrival (AoA) of the one or more reference signals as the angle value of a channel steering vector corresponding to a receive beam of the plurality of receive beams resulting in a highest signal strength measurement of the one or more reference signals; and determining a distance to the transmitter device as the range value of the channel steering vector corresponding to the receive beam resulting in the highest signal strength measurement of the one or more reference signals. ### Claim 17 (depends on 16) The method of claim 16, further comprising: receiving, from a sensing server, an indication of an algorithm to use to determine the AoA of the one or more reference signals and the distance to the transmitter device. ### Claim 18 (depends on 16) The method of claim 16, further comprising: transmitting, to a sensing server, a capability message indicating that the receiver device is capable of performing near-field sensing. ### Claim 19 (depends on 18) The method of claim 18, wherein the capability message identifies one or more zones in which the receiver device is capable of performing the near-field sensing. ### Claim 20 (depends on 16) The method of claim 16, further comprising: receiving a request from a sensing server to perform near-field sensing to determine the AoA of the one or more reference signals and the distance to the transmitter device. ### Claim 21 (depends on 20) The method of claim 20, wherein the request identifies one or more zones in which the receiver device is requested to perform the near-field sensing. ### Claim 22 (depends on 16) The method of claim 16, further comprising: obtaining a second plurality of signal strength measurements of the one or more reference signals transmitted by the transmitter device on a second transmit beam, wherein the second plurality of signal strength measurements is obtained using the plurality of receive beams; determining a second AoA of the one or more reference signals as the angle value of a second channel steering vector corresponding to a second receive beam of the plurality of receive beams resulting in a highest second signal strength measurement of the one or more reference signals; and determining a second distance to the transmitter device as the range value of the second channel steering vector corresponding to the second receive beam resulting in the highest signal second strength measurement of the one or more reference signals. ### Claim 23 (depends on 16) The method of claim 16, wherein: the receiver device is a user equipment (UE), and the transmitter device is a base station. ### Claim 24 (depends on 16) The method of claim 16, wherein: the receiver device is a base station, and the transmitter device is a UE. ### Claim 25 (depends on 16) The method of claim 16, wherein: the receiver device is a first UE, and the transmitter device is a second UE. ### Claim 26 A transmitter device, comprising: one or more memories; one or more transceivers; and one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to: transmit, via the one or more transceivers, to at least one receiver device, one or more reference signals on each of a plurality of transmit beams, wherein the plurality of transmit beams corresponds to a plurality of codepoints of a near-field codebook, and wherein each of the plurality of codepoints is parameterized with an angle value and a range value of a corresponding transmit beam of the plurality of transmit beams. ### Claim 27 (depends on 26) The transmitter device of claim 26, wherein the plurality of codepoints is a plurality of steering vectors for the plurality of transmit beams. ### Claim 28 (depends on 26) The transmitter device of claim 26, wherein angle values and range values corresponding to the plurality of codepoints are sampled from an entire angular-distance domain. ### Claim 29 A receiver device, comprising: one or more memories; one or more transceivers; and one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to: obtain a plurality of signal strength measurements of one or more reference signals transmitted by a transmitter device on a first transmit beam, wherein the plurality of signal strength measurements is obtained using a corresponding plurality of receive beams of the receiver device, wherein the plurality of receive beams corresponds to a plurality of channel steering vectors, and wherein each of the plurality of channel steering vectors is parameterized with an angle value and a range value of a corresponding receive beam of the plurality of receive beams; determine an angle-of-arrival (AoA) of the one or more reference signals as the angle value of a channel steering vector corresponding to a receive beam of the plurality of receive beams resulting in a highest signal strength measurement of the one or more reference signals; and determine a distance to the transmitter device as the range value of the channel steering vector corresponding to the receive beam resulting in the highest signal strength measurement of the one or more reference signals. ### Claim 30 (depends on 29) The receiver device of claim 29, wherein the one or more processors, either alone or in combination, are further configured to: receive, via the one or more transceivers, from a sensing server, an indication of an algorithm to use to determine the AoA of the one or more reference signals and the distance to the transmitter device.