# US 12,000,944 B2 · Positioning system with NLOS identification and multipath mitigation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,944 B2 - Document ID: US12000944B2 - Status: Granted - Kind: B2 - Application number: 17/482,255 - Filed: 2021-09-22 - Published: 2022-04-14 - Granted: 2024-06-04 - Earliest claimed: 2020-10-13 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Yuhan Zhou; Jung Hyun Bae - Web page: https://patentgrep.com/patent/US12000944B2 ## CPC - G01S 5/0218: {Multipath in signal reception} - H04W 64/00: Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management - G01S 5/0036: {of measured values, i.e. measurement on mobile and position calculation on base station} - G01S 5/011: {Identifying the radio environment} - G01S 5/0205: {Details} - G01S 5/0273: {using multipath or indirect path propagation signals in position determination} - H04W 64/006: {with additional information processing, e.g. for direction or speed determination} - 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 - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A system and method for positioning for line-of-sight and non-line-of sight environments. In some embodiments, the method includes: receiving, by a User Equipment (UE), from a first Transmission and Reception Point (TRP) of a network, a Positioning Reference Signal (PRS); and sending, by the UE, a response to the network. The sending may include sending an indicator, the indicator indicating whether the UE has performed a measurement based on the Positioning Reference Signal, received via a line-of-sight path; or the sending may include identifying a first detected path and sending a plurality of measurements to the network, the plurality of measurements including, for each of a first plurality of paths, the arrival time difference relative to the arrival time of the first detected path, the first plurality of paths not including the first detected path, and the first plurality of paths including two paths. ## Claims ### Claim 1 A method, comprising: receiving, by a User Equipment (UE), from a first Transmission and Reception Point (TRP) of a network, a Positioning Reference Signal (PRS); and sending, by the UE, a response to the network, wherein: the sending of the response comprises identifying, by the UE, a first detected path of the PRS and sending, by the UE, a plurality of measurements to the network, the plurality of measurements including, for each of a first plurality of paths corresponding to multiple multipath components of the PRS, an arrival time difference relative to the arrival time of the first detected path of the PRS, the first plurality of paths not including the first detected path, and the first plurality of paths comprising two paths. ### Claim 2 (depends on 1) The method of claim 1, further comprises sending, by the UE, to the network, an indicator, the indicator indicating whether the UE has performed a measurement based on a second Positioning Reference Signal, received via a line-of-sight path. ### Claim 3 (depends on 2) The method of claim 2, wherein the indicator is a binary value. ### Claim 4 (depends on 2) The method of claim 2, wherein the indicator is a value selected from a set of three or more finite precision values in the interval [0, 1]. ### Claim 5 (depends on 4) The method of claim 4, wherein the indicator is an estimate of the likelihood that the UE has performed a measurement based on the second Positioning Reference Signal, received via a line-of-sight path. ### Claim 6 (depends on 2) The method of claim 2, further comprising: calculating, by the UE, a Power Delay Profile (PDP) or Channel Impulse Response (CIR) corresponding to the second Positioning Reference Signal; and generating, by the UE, the indicator, based on the Power Delay Profile or Channel Impulse Response. ### Claim 7 (depends on 2) The method of claim 2, wherein the sending of the indicator comprises sending the indicator in SignalMeasurementInformation information element (IE) for PRS-RSRP, RSTD, and Rx-Tx time difference measurements. ### Claim 8 (depends on 1) The method of claim 1, wherein the first plurality of paths comprises three paths. ### Claim 9 (depends on 1) The method of claim 1, wherein the plurality of measurements further includes, for each path of the first plurality of paths, the received power for the path. ### Claim 10 (depends on 9) The method of claim 9, wherein, for each path of the first plurality of paths, the received power for the path is a measurement of power for the path relative to a measurement of power for the first detected path. ### Claim 11 (depends on 9) The method of claim 9, wherein, for each path of the first plurality of paths, the received power for the path is a measurement of power for the path relative to a measurement of total power across all paths. ### Claim 12 A system, comprising: a User Equipment (UE) comprising a processing circuit, the processing circuit being configured to: receive, from a first Transmission and Reception Point (TRP) of a network, a Positioning Reference Signal (PRS); and send a response to the network, wherein: the sending of the response comprises identifying, by the UE, a first detected path of the PRS and sending, by the UE, a plurality of measurements to the network, the plurality of measurements including, for each of a first plurality of paths corresponding to multiple multipath components of the PRS, an arrival time difference relative to the arrival time of the first detected path of the PRS, the first plurality of paths not including the first detected path, and the first plurality of paths comprising two paths. ### Claim 13 (depends on 12) The system of claim 12, wherein the processing circuit is further configured to send, by the UE, to the network, an indicator, the indicator indicating whether the UE has performed a measurement based on a second Positioning Reference Signal, received via a line-of-sight path. ### Claim 14 (depends on 13) The system of claim 13, wherein the indicator is a binary value. ### Claim 15 (depends on 13) The system of claim 13, wherein the indicator is a value selected from a set of three or more finite precision values in the interval [0, 1]. ### Claim 16 (depends on 15) The system of claim 15, wherein the indicator is an estimate of the likelihood that the UE has performed a measurement based on the second Positioning Reference Signal, received via a line-of-sight path. ### Claim 17 (depends on 13) The system of claim 13, wherein the processing circuit is further configured to: calculate a Power Delay Profile (PDP) or Channel Impulse Response (CIR) corresponding to the second Positioning Reference Signal; and generate the indicator, based on the Power Delay Profile or Channel Impulse Response. ### Claim 18 (depends on 13) The system of claim 13, wherein the sending of the indicator comprises sending the indicator in SignalMeasurementInformation information element (IE) for PRS-RSRP, RSTD, and Rx-Tx time difference measurements. ### Claim 19 A system, comprising: a User Equipment (UE) comprising means for processing, the means for processing being configured to: receive, from a first Transmission and Reception Point (TRP) of a network, a Positioning Reference Signal (PRS); and send a response to the network, wherein: the sending of the response comprises identifying, by the UE, a first detected path of the PRS and sending, by the UE, a plurality of measurements to the network, the plurality of measurements including, for each of a first plurality of paths corresponding to multiple multipath components of the PRS, an arrival time difference relative to the arrival time of the first detected path of the PRS, the first plurality of paths not including the first detected path, and the first plurality of paths comprising two paths.