# US 12,000,942 B2 · Methods and apparatuses for positioning in a wireless communications network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,942 B2 - Document ID: US12000942B2 - Status: Granted - Kind: B2 - Application number: 17/770,165 - Filed: 2020-10-05 - Published: 2022-12-22 - Granted: 2024-06-04 - Earliest claimed: 2019-11-07 - Assignees: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - Applicants: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - Inventors: Mohammad Alawieh; Ernst Eberlein; Tobias Feigl; Thomas Von Der Grün - Web page: https://patentgrep.com/patent/US12000942B2 ## CPC - G01S 5/0036: {of measured values, i.e. measurement on mobile and position calculation on base station} - G01S 5/0218: {Multipath in signal reception} - G01S 5/10: Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements {, e.g. omega or decca systems}(G01S5/12 takes precedence {; beacons and receivers cooperating therewith G01S1/306, G01S1/308}) - 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 The present disclosure relates to methods and apparatuses for improving positioning of a device in a wireless communications network. In some embodiments, a method performed by a measuring device configured to communicate with a positioning device, comprises: determining a cross-correlation between a received signal and a transmitted reference signal; determining a channel impulse response (CIR) of the cross-correlation related to a first lobe detected above a selected threshold in said CIR; and reporting information on a truncated part of the CIR around the first lobe to the positioning device for enabling the positioning device to correct or estimate a measurement related to a distance between a transmitter and the measuring device and/or a distance between at least one reflecting cluster and the measuring device. ## Claims ### Claim 1 A method performed by a measuring device configured to communicate with a positioning device, the method comprising: determining a cross-correlation between a received signal and a transmitted reference signal; determining a channel impulse response (CIR) of the cross-correlation, related to a first lobe detected above a selected threshold in said CIR; and reporting a truncated part of the CIR around the first lobe to the positioning device for enabling the positioning device to correct or estimate a measurement related to a distance between a transmitter and the measuring device and/or a distance between at least one reflecting cluster and the measuring device, wherein the first lobe includes a first arrival path, and the truncated part of the CIR includes a selected number of samples around the first arrival path included in the first lobe in the CIR. ### Claim 2 (depends on 1) The method according to claim 1, wherein the truncated part of the CIR comprises complex valued out of the CIR including a real and imaginary output of the CIR around said first lobe. ### Claim 3 (depends on 1) The method according to claim 1, wherein the truncated part of the CIR is reported to the positioning device in a message including at least a start position relative a coarse time-of-arrival (TOA) estimate of the first arrival path and a number of the complex valued of the selected samples; and a number of antennas used for said reporting. ### Claim 4 (depends on 1) The method according to claim 1, further comprising estimating the first arrival path with a resolution of 1/sampling_frequency. ### Claim 5 (depends on 1) The method according to claim 1, wherein the threshold is selected according to an estimated noise floor or according to a maximum value of the correlation. ### Claim 6 (depends on 1) The method according to claim 1, further comprising receiving, from the positioning device, a request for capabilities of the measuring device and providing the positioning device with the requested capabilities including information on at least a number of antenna ports used for reporting the truncated part of the CIR. ### Claim 7 (depends on 2) The method according to claim 2, further comprising reporting information on the complex valued time domain CIR at a sampling frequency according to a used bandwidth. ### Claim 8 (depends on 1) The method according to claim 1, further comprising measuring a relative time from the first arrival path to said at least one reflecting cluster at one or more time instants, wherein the relative time is given by: t4MP=t4+tc1 where t4 is a signal reception time at the measuring device and tc1 is a time delay, caused by at least one cluster, to the first arrival path. ### Claim 9 (depends on 8) The method according to claim 8, further comprising receiving a request from the positioning device requesting relative time measurements to identified clusters(s) by providing at least the relative time to the first arrival path, for enabling the positioning device to compute a relative time given by: t2MP=t2+tc1 where t2 is a signal reception time at the positioning device and tc1 is the time delay, caused by at least one cluster, to the first arrival path. ### Claim 10 (depends on 1) The method according to claim 1, wherein the first lobe includes the first arrival path and at least two samples defining a rising edge and/or a falling edge of the first lobe. ### Claim 11 A measuring device configured to communicate with a positioning device, the measuring device comprising a processor and a memory containing instructions executable by the processor whereby the measuring device is operative to: determine a cross-correlation between a received signal and a transmitted reference signal; determine a channel impulse response (CIR) of the cross-correlation, related to a first lobe detected above a selected threshold in said CIR; and report a truncated part of the CIR around the first lobe to the positioning device for enabling the positioning device to correct or estimate a measurement related to a distance between a transmitter and the measuring device and/or a distance between at least one reflecting cluster and the measuring device, wherein the first lobe includes a first arrival path, and the truncated part of the CIR includes a selected number of samples around the first arrival path included in the first lobe in the CIR. ### Claim 12 (depends on 11) The measuring device according to claim 11, wherein when the measuring device is a user device, the user device is configured to communicate with the positioning device over an LTE positioning protocol (LPP) interface, the user device configured to communicate with the positioning device over a sidelink interface, and when the measuring device is a network node, the network node is configured to communicate with the positioning device over a New Radio Positioning Protocol A (NRPPa) interface. ### Claim 13 A method performed by a positioning device configured to communicate with a measuring device, the method comprising: configuring the measuring device to determine a cross-correlation between a received signal received by the measuring device and a transmitted reference signal; configuring the measuring device to determine a channel impulse response (CIR) of the cross-correlation, related to a first lobe detected above a selected threshold in said CIR; receiving from the measuring device a report including a truncated part of the CIR around the first lobe, wherein the first lobe includes a first arrival path, and the truncated part of the CIR includes a selected number of samples around the first arrival path included in the first lobe in the CIR; and correcting or estimating a measurement related to a distance between a transmitter and the measuring device and/or a distance between at least one reflecting cluster and the measuring device. ### Claim 14 (depends on 13) The method according to claim 13, wherein the truncated part of the CIR comprises complex valued out of the CIR including a real and imaginary output of the CIR around said first lobe. ### Claim 15 (depends on 13) The method according to claim 13, wherein the truncated part of the CIR is received in a message including at least a start position relative a coarse time-of-arrival (TOA) estimate of the first arrival path and a number of the complex valued of the selected samples; and a number of antennas used for said reporting. ### Claim 16 (depends on 14) The method according to claim 14, further comprising receiving information on the complex valued time domain CIR at a sampling frequency according to a used bandwidth. ### Claim 17 (depends on 13) The method according to claim 13, further comprising transmitting a request to the measuring device, requesting measurement of a relative time from the first arrival path to said at least one reflecting cluster at one or more time instants, wherein the relative time is given by: t4MP=t4+tc1 where t4 is a signal reception time at the measuring device and tc1 is a time delay, caused by at least one cluster, to the first arrival path. ### Claim 18 (depends on 17) The method according to claim 17, further comprising transmitting a request to the measuring device, requesting relative time measurements to identified clusters(s) by providing at least the relative time to the first arrival path, for enabling computing a relative time given by: t2MP=t2+tc1 where t2 is a signal reception time at the positioning device and tc1 is the time delay, caused by at least one cluster, to the first arrival path. ### Claim 19 (depends on 18) The positioning device according to claim 18, the positioning device including a Location Management Function. ### Claim 20 A positioning device configured to communicate with a measuring device, the positioning device comprising a processor and a memory containing instructions executable by the processor whereby the positioning device is operative to: configure the measuring device to determine a cross-correlation between a received signal received by the measuring device and a transmitted reference signal; configure the measuring device to determine a channel impulse response (CIR) of the cross-correlation, related to a first lobe detected above a selected threshold in said CIR; receiving from the measuring device a report including a truncated part of the CIR around the first lobe, wherein the first lobe includes a first arrival path, and the truncated part of the CIR includes a selected number of samples around the first arrival path included in the first lobe in the CIR; and correct or estimating a measurement related to a distance between a transmitter and the measuring device and/or a distance between at least one reflecting cluster and the measuring device.