# US 2024/0201356 A1 · First and second order reflection-assisted sensing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0201356 A1 - Document ID: US20240201356A1 - Status: Published application - Kind: A1 - Application number: 18/066,990 - Filed: 2022-12-15 - Published: 2024-06-20 - Earliest claimed: 2022-12-15 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Yucheng DAI; Wooseok NAM; Tao LUO - Web page: https://patentgrep.com/patent/US20240201356A1 ## CPC - G01S 7/006: {using shared front-end circuitry, e.g. antennas (G01S13/765, G01S13/825 take precedence)} - G01S 13/06: Systems determining position data of a target - G01S 13/003: {Bistatic radar systems; Multistatic radar systems} - G01S 13/48: using multiple beams at emission or reception - G01S 2013/462: {using multipath signals} - 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 A first wireless device may output a sensing signal configuration for performing sensing on a first reflected sensing signal from the first wireless device via a target object and a second reflected sensing signal from a reflective object via the target object based on a set of sensing signals. The first wireless device may transmit the set of sensing signals to the target object and the reflective object. The reflective object may reflect at least one of the set of sensing signals to the target object based on the sensing signal configuration. The first reflected sensing signal and the second reflected sensing signal may be received by the first wireless device in a monostatic configuration or by a second wireless device in a bi-static configuration. The receiving device may calculate a location of the target object based on the sensing signal configuration. ## Claims ### Claim 1 An apparatus for wireless communication at a first wireless device, comprising: a memory; and at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to: output a sensing signal configuration for performing sensing on a first reflected sensing signal from the first wireless device via a target object and a second reflected sensing signal from a reflective object via the target object based on a set of sensing signals; and transmit the set of sensing signals to the target object and the reflective object, wherein the reflective object reflects at least one of the set of sensing signals to the target object based on the sensing signal configuration. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the reflective object comprises at least one of a reconfigurable intelligent surface (RIS) or a virtual transmission reception point (VTRP), wherein the sensing signal configuration comprises an indication of at least one of a location or a coverage of the RIS or the VTRP. ### Claim 3 (depends on 1) The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor, wherein the reflective object comprises a reconfigurable intelligent surface (RIS), wherein the at least one processor is further configured to: transmit, via the transceiver, an indication of a scatter direction to the RIS, wherein the sensing signal configuration comprises the indication of the scatter direction. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the at least one processor is further configured to: receive a sensing request to perform sensing within a designated range; and identify a set of reflective objects that have a line of sight (LOS) path to the designated range with respect to the first wireless device, wherein the set of reflective objects comprise the reflective object, wherein, to transmit the set of sensing signals to the reflective object, the at least one processor is configured to transmit the set of sensing signals to the reflective object based on identifying the set of reflective objects comprising the reflective object. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the designated range comprises at least one of a position of the target object or an area of interest comprising the position of the target object. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein, to output the sensing signal configuration, the at least one processor is configured to: transmit the sensing signal configuration to a second wireless device. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the sensing signal configuration comprises an indication of a set of narrow transmit beams associated with the set of sensing signals. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein each of the set of narrow transmit beams comprises a discrete resource or a discrete direction. ### Claim 9 (depends on 6) The apparatus of claim 6, wherein the first wireless device comprises at least one of a first user equipment (UE) or a first network node, wherein the second wireless device comprises at least one of a second UE or a second network node. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the sensing signal configuration comprises an indication of a path report. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the at least one processor is further configured to: transmit an indication of a setting associated with the path report to a second wireless device; and receive the path report from the second wireless device based on the setting. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the sensing signal configuration comprises a first indication of a type of reflector associated with the reflective object and a second indication of a position associated with the reflective object. ### Claim 13 (depends on 1) The apparatus of claim 1, wherein, to transmit the set of sensing signals to the target object and the reflective object, the at least one processor is configured to simultaneously transmit the set of sensing signals to the target object and the reflective object. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein, to simultaneously transmit the set of sensing signals to the target object and the reflective object, the at least one processor is configured to transmit a broad beam that spans a first direction towards the target object and a second direction towards the reflective object. ### Claim 15 (depends on 13) The apparatus of claim 13, wherein, to simultaneously transmit the set of sensing signals to the target object and the reflective object, the at least one processor is configured to transmit a first beam with a first sensing resource in a first direction towards the target object and transmit a second beam with a second sensing resource in a second direction towards the reflective object, wherein the first sensing resource is different from the second sensing resource. ### Claim 16 (depends on 13) The apparatus of claim 13, wherein, to simultaneously transmit the set of sensing signals to the target object and the reflective object, the at least one processor is configured to transmit a first beam with a sensing resource in a first direction towards the target object and transmit a second beam with the sensing resource in a second direction towards the reflective object. ### Claim 17 (depends on 1) The apparatus of claim 1, wherein, to transmit the set of sensing signals to the target object and the reflective object, the at least one processor is configured to: transmit a first beam towards the target object during a first time domain; and transmit a second beam towards the reflective object during a second time domain. ### Claim 18 (depends on 1) The apparatus of claim 1, wherein, to transmit the set of sensing signals to the target object and the reflective object, the at least one processor is configured to: transmit a first beam with a first watermarking pattern towards the target object; and transmit a second beam with a second watermarking pattern towards the reflective object. ### Claim 19 (depends on 1) The apparatus of claim 1, wherein the at least one processor is further configured to: receive the first reflected sensing signal from the first wireless device via the target object; receive the second reflected sensing signal from the reflective object via the target object; and calculate a location of the target object based on the first reflected sensing signal, the second reflected sensing signal, and the sensing signal configuration. ### Claim 20 An apparatus for wireless communication at a second wireless device, comprising: a memory; and at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to: receive a sensing signal configuration for performing sensing based on a set of sensing signals from a first wireless device; receive a first reflected sensing signal from the first wireless device via a target object; receive a second reflected sensing signal from a reflective object via the target object; and calculate a location of the target object based on the first reflected sensing signal, the second reflected sensing signal, and the sensing signal configuration. ### Claim 21 (depends on 20) The apparatus of claim 20, wherein the reflective object comprises at least one of a reconfigurable intelligent surface (RIS) or a virtual transmission reception point (VTRP), wherein the sensing signal configuration comprises an indication of at least one of a second location or a coverage of the RIS or the VTRP, wherein, to calculate the location of the target object, the at least one processor is configured to: calculate the location of the target object further based on the indication of at least one of the second location or the coverage of the RIS or the VTRP. ### Claim 22 (depends on 20) The apparatus of claim 20, wherein the sensing signal configuration comprises a first indication of a type of reflector associated with the reflective object and a second indication of a position associated with the reflective object, wherein, to calculate the location of the target object, the at least one processor is configured to: calculate the location of the target object further based on the first indication and the second indication. ### Claim 23 (depends on 20) The apparatus of claim 20, wherein the at least one processor is further configured to: receive an indication of a setting associated with a path report from the first wireless device, wherein, to calculate the location of the target object, the at least one processor is configured to calculate the location of the target object further based on the indication of the setting. ### Claim 24 (depends on 23) The apparatus of claim 23, wherein the setting comprises at least one of a clustering apparatus, a delay threshold, an angle of arrival (AoA) threshold, a number of representative paths, or a metric for representative path selection. ### Claim 25 (depends on 23) The apparatus of claim 23, further comprising a transceiver coupled to the at least one processor, wherein the at least one processor is further configured to: transmit, via the transceiver, the path report to the first wireless device, wherein the path report comprises a representative path from the target object based on the sensing signal configuration. ### Claim 26 (depends on 20) The apparatus of claim 20, wherein the sensing signal configuration comprises a first indication of a first sensing resource associated with a first subset of the set of sensing signals and a second indication of a second sensing resource associated with a second subset of the set of sensing signals, wherein the first reflected sensing signal is associated with the first sensing resource, wherein the second reflected sensing signal is associated with the second sensing resource, wherein, to calculate the location of the target object, the at least one processor is configured to: calculate the location of the target object further based on the first indication of the first sensing resource and the second indication of the second sensing resource. ### Claim 27 (depends on 20) The apparatus of claim 20, wherein the sensing signal configuration comprises a first indication of a first time domain associated with a first subset of the set of sensing signals and a second indication of a second time domain associated with a second subset of the set of sensing signals, wherein the first reflected sensing signal is associated with the first time domain, wherein the second reflected sensing signal is associated with the second time domain, wherein, to calculate the location of the target object, the at least one processor is configured to: calculate the location of the target object further based on the first indication of the first time domain and the second indication of the second time domain. ### Claim 28 (depends on 20) The apparatus of claim 20, wherein the sensing signal configuration comprises a first indication of a first watermarking pattern associated with a first subset of the set of sensing signals and a second indication of a second watermarking pattern associated with a second subset of the set of sensing signals, wherein the first reflected sensing signal comprises the first watermarking pattern, wherein the second reflected sensing signal comprises the second watermarking pattern, wherein, to calculate the location of the target object, the at least one processor is configured to: calculate the location of the target object further based on the first indication of the first watermarking pattern and the second indication of the second watermarking pattern. ### Claim 29 A method of wireless communication at a first wireless device, comprising: outputting a sensing signal configuration for performing sensing on a first reflected sensing signal from the first wireless device via a target object and a second reflected sensing signal from a reflective object via the target object based on a set of sensing signals; and transmitting the set of sensing signals to the target object and the reflective object, wherein the reflective object reflects at least one of the set of sensing signals to the target object based on the sensing signal configuration. ### Claim 30 A method of wireless communication at a second wireless device, comprising: receiving a sensing signal configuration for performing sensing based on a set of sensing signals from a first wireless device; receiving a first reflected sensing signal from the first wireless device via a target object; receiving a second reflected sensing signal from a reflective object via the target object; and calculating a location of the target object based on the first reflected sensing signal, the second reflected sensing signal, and the sensing signal configuration.