IP Library › Granted Patent US 12,326,511
Granted Patent B2
US 12,326,511 · App. 17/668,941 · Granted Jun 10, 2025

System, method and computer-accessible medium for real time imaging using a portable device

Inventors: Theodore S. Rappaport (Raleigh, NC); Ojas Kanhere (Brooklyn, NY)
Assignee: New York University
G01S5/0268G01C19/00G01P15/00G01S5/0218
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Quick Facts
Patent No.
US 12,326,511
App. No.
17/668,941
Granted
Jun 10, 2025
Kind
B2
Abstract

Exemplary system, method and computer-accessible medium for selecting at least one location of (i) at least one receiver or transceiver or (ii) at least one transmitter or transceiver can be provided. For example, it is possible to facilitate a receipt, from the at least one transmitter or transceiver, of a plurality of signals by the receiver(s) or transceiver(s). Each of the signals has a multipath component. Then, it is possible to determine time of flight (ToF) information and angle of arrival (AoA) information of the multipath components present in the signals. Further, it is possible to determine one or more possible locations of (i) the receiver(s) or transceiver(s) or (ii) the transmitter(s) or transceiver(s) based on the ToF information, the AoA information, and a model of physical surroundings. The location(s) of (i) the receiver(s) or transceiver(s), or (ii) the transmitter(s) or transceiver(s) can be selected based on the one or more possible locations and an extended Kalman filter (“EKF”).

Claims (78)

1. A method for selecting at least one location of at least one portable device (PD) in an environment that includes at least one separate device (SD), wherein the at least one PD includes a PD receiver and/or a PD transmitter and the at least one SD includes an SD transmitter and/or an SD receiver, the method comprising:

facilitating a receiving by the PD of radio frequency (RF) signals and transmission information from the SD, the RF signals including at least two multipath components of an RF SD signal from the SD transmitter, and the transmission information including an angle of departure (AoD) information indicating the AoD of the RF SD signal transmission;

determining time of flight (ToF) information for the at least two multipath components;

determining, using a map-assisted positioning with angle and time (MAP-AT) processing, one or more possible locations of the at least one portable device, wherein the MAP-AT processing comprises accessing a model of physical surroundings of the portable device and generating, based at least in part on an information content of the model, in combination with the determined ToF information and the received AoD information, the one or more possible locations; and

selecting the at least one location of the at least one portable device based at least in part on the one or more possible locations.

2. The method of claim 1 , wherein one or more of the RF signals comprise millimeter wave (mmWave) signals.

3. The method of claim 1 , further comprising a step of generating, prior to the determining the one or more possible locations of the at least one portable device, at least a portion of the model of physical surroundings, wherein the generating of at least the portion of the model of the physical surroundings is based at at least in part on any among, or any combination or sub-combination one of:

one or more video recordings of an environment obtained using a visible-light camera,

one or more pictures of the environment obtained using the visible-light camera,

one or more light detection and ranging (LIDAR) generated 2D models or 3D models of the environment,

radar imaging results of a millimeter wave (mmWave) radiofrequency (RF) radar,

a computer-aided design (CAD) software application,

a hand drawing, and/or

floorplans or blueprints of a building.

4. The method of claim 1 , wherein at least one of the RF signals has (i) an oscillating frequency in a range that includes 6 GHz and extends from 6 GHz up to and includes 1 THz, or (ii) a bandwidth that is in a range that includes a bandwidth of 100 MHz and extends from the bandwidth of 100 MHz up to and includes a bandwidth of 10 GHz, or has (i) and (ii).

5. The method of claim 1 , wherein the determining of the one or more possible locations comprises using at least one site-specific computer rendered simulation that is at least one of

in real-time,

by a cloud server,

on the PD, or

on the SD.

6. The method of claim 1 , wherein the separate device is a base station and the at least one portable device is a cellphone.

7. The method of claim 1 , further comprising an updating of at least a portion of the model of the physical surroundings.

8. The method of claim 1 , wherein the SD is a base station, and wherein the determining of the one or more possible locations is performed by a computer system arranged as (i) a mobile computer system, (ii) a fixed computer system provided at the base station, (iii) a cloud computing system, or any combination or sub-combination of two or more among (i), (ii), and (iii).

9. The method of claim 1 , further comprising determining a velocity and/or an acceleration of the at least one portable device using at least one of a Kalman filter, and/or an extended Kalman filter, and/or or a particle filter.

10. The method of claim 1 , wherein the separate device is a base station, and wherein the selecting of the at least one location of the at least one portable device comprises:

clustering the one or more possible locations into one or more clusters of the possible locations, the clustering being based on a maximum allowed distance between possible location within the same cluster, and

selecting among the one or more clusters, the cluster that contains the highest number of possible locations.

11. The method of claim 1 , further comprising determining a carrier phase of at least one of the at least two multipath components received at the PD receiver, wherein determining the at least one location of the at least one PD is further based, at least in part, on the carrier phase.

12. The method of claim 1 , wherein the SD is a base station and the base station comprises a BS phased antenna array, wherein the AoD and AoD information is determined by the BS using the BS phased antenna array.

13. The method of claim 1 , further comprising determining, with onboard sensors in the at least one portable device:

an orientation of (i) the at least one portable device, or

z-coordinates (i) the at least one portable device, or

both.

14. The method of claim 13 , wherein at least one of the onboard sensors is configured to determine the orientation of the at least one portable device and comprises a gyroscope or an accelerometer or both.

15. The method of claim 13 , wherein at least one of the onboard sensors is configured to determine the z-coordinates and comprises a barometer.

16. The method of claim 1 , wherein:

the PD further includes a PD antenna array,

the SD is a first base station, and the environment further includes, respectively positioned within an RF range distance from the PD, at least a second base station and a third base station and the method further comprises, and

the method further comprises the PD determining:

a first angle of arrival (AoA) of one or more RF first BS signals received, at the PD receiver via the PD antenna array, from the first BS,

a second angle of arrival (AoA) of one or more RF second BS signals received, at the PD receiver via the PD antenna array, from the second BS,

a third angle of arrival (AoA) of one or more RF third BS signals received, at the PD receiver via the PD antenna array, from the third BS; and

wherein selecting the at least one location of the at least one portable device is further based at least in part on accessing, using at least the first AoA, the second AoA, and the third AoA, a look-up table which includes, for each location among a plurality of locations within the environment, respective location-specific AoA measurements, comprising a location-specific first BS AoA measurement, a location-specific second BS AoA measurement, and a location-specific third BS AoA measurement.

17. The method of claim 1 , wherein at least one of the RF SD signals comprises a pulsed RF signal, or a signal that is discretized over a plurality of individual RF frequencies.

18. The method of claim 1 , wherein the PD further includes an antenna array communicatively coupled to the PD receiver and to the PD transmitter, and a computer-based logic communicatively coupled to the PD receiver and to the PD transmitter, and the method further comprises the computer-based logic performing, prior to facilitating the receiving by the PD of RF signals and transmission information from the SD, an RF radar imaging based generating of at least a portion of the model of physical surroundings of the portable device, comprising the computer-based logic:

controlling the RF transmitter of the portable device, in a manner causing a transmitting and spatial scanning of an RF radar beam from the antenna array;

receiving, via the PD RF receiver from the antenna array, reflections of the RF radar beam;

processing of the reflections of the RF radar beam by a modelling process configured to output, based at least in part on the reflections, the least the portion of the model,

wherein

the RF radar beam comprises radio frequencies within a range that includes 6 GHz and that extends from 6 GHz up to and including 1 THz,

the RF radar beam has a bandwidth (BW), which is in a range that includes 100 MHz BW and extends up to and includes 10 GHz BW,

the portable device, over at least portion of the scanning, is at a location at which an obstruction renders a subject RF reflective surface to be a subject hidden RF reflective surface, not visible to a user of the portable device, and

based on a combination comprising at least a transmitted power of the RF radar beam, a configuration of the antenna array, and a configuration of the modeling process, the generated at least the portion of the model includes a model of the subject hidden RF reflective surface.

19. The method of claim 1 , wherein the RF SD signals are configured as known signals to the PD.

20. The method of claim 1 , wherein the SD is a base station (BS), the SD receiver is a BS receiver, and the SD transmitter is a BS transmitter, wherein the at least one location is a first location, and the method further comprises, subsequent to the selecting the first location, a PD device transmission mode process of selecting at least one second location of the at least one PD, by steps of:

facilitating a receiving by the BS receiver of at least two multipath components of an RF PD signal from the PD transmitter;

determining by the BS an angle of arrival (AoA) of the BS receiver receiving of the at least two multipath components of the RF PD signal from the PD transmitter and a PD to BS ToF information for the at least two multipath components;

determining one or more possible second locations of the at least one portable device, by steps including another instance of the MAP-AT processing, the another instance of the MAP-AT processing comprising another accessing the model of physical surroundings of the portable device and configured to generate, based at least in part on the information content of the model obtained by the another instance of accessing the model, in combination with the determined PD to BS ToF information and the determined AoA information, the one or more possible second locations; and

selecting the at least one second location of the at least one portable device based at least in part on the one or more possible second locations.

21. The method of claim 20 , wherein the PD further includes a PD antenna array, the BS is a first BS, and the environment further comprises, respectively positioned within an RF range distance from the PD, a second BS and a third BS, and wherein:

the method further comprises the PD determining:

a first angle of arrival (AoA) of one or more RF first BS signals received, at the PD receiver via the PD antenna array, from the first BS,

a second angle of arrival (AoA) of one or more RF second BS signals received, at the PD receiver via the PD antenna array, from the second BS,

a third angle of arrival (AoA) of one or more RF third BS signals received, at the PD receiver via the PD antenna array, from the third BS; and

selecting the at least one second location of the at least one portable device is further based at least in part on accessing, using at least the first AoA, the second AoA, and the third AoA, a look-up table,

wherein

the look-up table comprises, for each location among a plurality of locations within the environment, respective location-specific AoA measurements, including a location-specific first BS AoA measurement, a location-specific second BS AoA measurement, and a location-specific third BS AoA measurement.

22. The method of claim 1 , wherein the RF PD signals are configured as known signals to the BS.

23. A non-transitory computer-accessible medium having stored thereon computer-executable instructions for selecting at least one location of at least one portable device (PD) in an environment that includes at least one separate device (SD), wherein the at least one PD includes a PD receiver and/or a PD transmitter and the at least one SD includes an SD transmitter and/or an SD receiver, wherein, when a computer arrangement executes the instructions, the computer arrangement is configured to perform procedures comprising:

facilitating a receiving, by the PD of radio frequency (RF) signals and transmission information from the SD, the RF signals including at least two multipath components of at least one RF SD signal from the SD transmitter, and the transmission information including an angle of departure (AoD) information indicating the AoD of the SD transmission of the RF SD signal;

determining time of flight (ToF) information for the at least two multipath components;

determining, using a map-assisted positioning with angle and time (MAP-AT) processing, one or more possible locations of the at least one portable device, wherein the MAP-AT processing comprises accessing a model of physical surroundings of the portable device and generating, based at least in part on an information content of the model, in combination with the determined ToF information and the received AoD information, the one or more possible locations; and

selecting the at least one location of the at least one portable device based at least in part on the one or more possible locations.

24. A system for selecting at least one location of at least one portable device (PD) in an environment that includes at least one separate device (SD), wherein the at least one PD includes a PD receiver and/or a PD transmitter and the at least one SD includes an SD transmitter and/or an SD receiver, wherein the SD is configured to transmit radio frequency (RF) SD signals with a respective angle of departure (AoD), and to transmit transmission information that includes AoD information indicating the AoD, and the PD receiver is configured to receive at least two multipath components of the RF SD signals from the SD at least one transmitter and the PD is configured to receive the AoD information from the transmitter or transceiver, of a plurality of signals, each of the signals having a multipath component, the system comprising:

at least one processor which is configured to:

determine time of flight (ToF) information of the at least two multipath components of the RF SD signals, and

determine, using a map-assisted positioning with angle and time (MAP-AT) processing, one or more possible locations of (i) the at least one PD based on the ToF information, the AoD information, and a model of physical surroundings, and

to select at least one location of the PD based on the one or more possible locations.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 10, 2022
From: RAPPAPORT, THEODORE S.; KANHERE, OJAS
To: NEW YORK UNIVERSITY
Reel/Frame 058975/0247 →
Continuity (5)
Continuation In Part 17552200 · Dec 15, 2021
Continuation In Part 16422517 · May 24, 2019
Provisional Application 62852053 · May 23, 2019
Provisional Application 62675869 · May 24, 2018
Related Publication 20220163616A1 · May 26, 2022
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