公开(公告)号：US10094902B2

公开(公告)日：2018-10-09

申请号：US15050153

申请日：2016-02-22

Applicant: Apple Inc.

Inventor： Alejandro J. Marquez ,  Mohit Narang ,  Ruben Caballero ,  Indranil S. Sen ,  Shang-Te Yang

IPC: G01S3/46

Abstract: Systems, methods, and devices are provided to estimate angle of arrival of wireless signals. An electronic device may include two or more antennas that receive a wireless transmission. The wireless transmission includes a first frequency signal at a first frequency and a second frequency signal at a second frequency. The electronic device includes angle of arrival logic that may determine one or more angles of arrival of the wireless transmission to the electronic device using phase difference on arrival based on each of the first and second frequency signals.

公开(公告)号：US20250106587A1

公开(公告)日：2025-03-27

申请号：US18975823

申请日：2024-12-10

Applicant: APPLE INC.

Inventor： Brent M. Ledvina ,  Robert W. Brumley ,  Robert William Mayor ,  William J. Bencze ,  Alejandro J. Marquez ,  Shang-Te Yang ,  Xu Chen ,  Indranil S. Sen ,  Mohit Narang

IPC: H04W4/02 ,  B60R25/24 ,  G07C9/29

Abstract: Methods and devices are provided for allowing a mobile device (e.g., a key fob or a consumer electronic device, such as a mobile phone, watch, or other wearable device) to interact with a vehicle such that a location of the mobile device can be determined by the vehicle, thereby enabling certain functionality of the vehicle. A device may include both RF antenna(s) and magnetic antenna(s) for determining a location of a mobile device relative to the vehicle. Such a hybrid approach can provide various advantages. Existing magnetic coils on a mobile device (e.g., for charging or communication) may be re-used for distance measurements that are supplemented by the RF measurements. Any device antenna may provide measurements to a machine learning model that determines a region in which the mobile device resides, based on training measurements in the regions.

公开(公告)号：US12156029B2

公开(公告)日：2024-11-26

申请号：US17947066

申请日：2022-09-16

Applicant: Apple Inc.

Inventor： Shang-Te Yang ,  Xu Chen ,  Alejandro J. Marquez ,  Mohit Narang ,  Indranil S. Sen

IPC: H04W12/08 ,  G01S5/02 ,  H04L9/40 ,  H04W12/12 ,  H04W76/14

Abstract: Wireless communication between two electronic devices may be used to determine a distance between the two devices, even in the presence of an otherwise-disruptive attacker. A wireless receiver system of one device may receive a true wireless ranging signal from a first transmitting device and a false wireless ranging signal from an attacker. The wireless receiver system may correlate the wireless signals with a known preamble sequence and perform channel estimation using the result, obtaining a channel impulse response for the wireless signals. The wireless receiver system may filter the channel impulse response for the plurality of wireless signals by removing at least part of the channel impulse response due to the false wireless ranging signal while not removing at least part of the channel impulse response due to the true wireless ranging signal. The receiver system may perform a wireless ranging operation using the filtered channel impulse response.

公开(公告)号：US20230217213A1

公开(公告)日：2023-07-06

申请号：US18117877

申请日：2023-03-06

Applicant: Apple Inc.

Inventor： Amit S. Sant ,  Alejandro J. Marquez ,  Indranil S. Sen ,  Mohit Narang ,  Shang-Te Yang

IPC: H04W64/00 ,  H04B17/21 ,  H04B17/11

CPC classification number: H04W64/003 ,  H04B17/11 ,  H04B17/21

Abstract: Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. Location ambiguity mitigation is performed using characteristics of signals received by a reference node used to generate a radio frequency map of electronic devices.

公开(公告)号：US11265929B2

公开(公告)日：2022-03-01

申请号：US16090007

申请日：2017-04-14

Applicant: Apple Inc.

Inventor： Jerrold V. Hauck ,  Alejandro J. Marquez ,  Timothy R. Paaske ,  Indranil S. Sen ,  Herve Sibert ,  Yannick L. Sierra ,  Raman S. Thiara

IPC: H04W76/10 ,  H04W64/00 ,  H04W12/06 ,  H04W12/04 ,  H04W12/02 ,  H04L29/06 ,  H04L9/32 ,  H04W4/80

Abstract: A secure ranging system can use a secure processing system to deliver one or more ranging keys to a ranging radio on a device, and the ranging radio can derive locally at the system ranging codes based on the ranging keys. A deterministic random number generator can derive the ranging codes using the ranging key and one or more session parameters, and each device (e.g. a cellular telephone and another device) can independently derive the ranging codes and derive them contemporaneously with their use in ranging operations.

公开(公告)号：US11184810B2

公开(公告)日：2021-11-23

申请号：US16540301

申请日：2019-08-14

Applicant: Apple Inc.

Inventor： Vusthla Sunil Reddy ,  Alejandro J. Marquez ,  Indranil S. Sen ,  Manjit S. Walia ,  Peter M. Agboh ,  Shang-Te Yang ,  Xiaoming Yu

IPC: H04W36/00 ,  H04W64/00 ,  H04W36/30 ,  H04W76/15

Abstract: Methods and apparatuses are presented to locate a wireless communication device. A target device may be out of range of a source device for normal ranging communications according to a first radio access technology (RAT), such as ultra wideband (UWB) communications. A source device may therefore modify communications according to the first RAT, to increase the transmit power, while removing the data payload. The target device may utilize the signal strength and angle of arrival of the modified communications to guide the user to move toward the source device, e.g., until the target device is within range to perform normal ranging communications. A second RAT, such as Bluetooth, may be used to communicate between the two devices while the target device is out of range of the first RAT. For example, the target device may use the second RAT to communicate to the source device to start/stop transmitting modified communications.

公开(公告)号：US20200092191A1

公开(公告)日：2020-03-19

申请号：US16133943

申请日：2018-09-18

Applicant: Apple Inc.

Inventor： Alejandro J. Marquez ,  Shang-Te Yang ,  Mohit Narang ,  Indranil S. Sen ,  Joachim S. Hammerschmidt ,  Hung Kwan Oscar Au ,  Dineshan Poopalaratnam

IPC: H04L12/26 ,  H04W24/08 ,  H04W72/04

Abstract: Methods for a data-less ranging procedure may include initiating a ranging procedure via a polling message transmitted at a first time and receiving response messages at second and third times. The time intervals between the first and second time and the second and third times may be pre-defined. A time of flight may be calculated based on the pre-defined time intervals and the first, second, and third times.

公开(公告)号：US20190342707A1

公开(公告)日：2019-11-07

申请号：US16511756

申请日：2019-07-15

Applicant: Apple Inc.

Inventor： Amit S. Sant ,  Alejandro J. Marquez ,  Indranil S. Sen ,  Mohit Narang ,  Shang-Te Yang

IPC: H04W4/02 ,  G01S5/00 ,  H04W64/00 ,  G01S5/14 ,  G01S5/12 ,  H04W4/029

Abstract: Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. The method also includes performing front-back detection, performing stationary node detection, performing angle of arrival (AoA) error correction, and performing field of view (FOV) filtering. Performing indoor localization and tracking of the plurality of other wireless electronic devices includes providing an indication of a physical location of the plurality of other wireless electronic devices within the indoor environment.

公开(公告)号：US10356553B2

公开(公告)日：2019-07-16

申请号：US15619171

申请日：2017-06-09

Applicant: Apple Inc.

Inventor： Amit S. Sant ,  Alejandro J. Marquez ,  Indranil S. Sen ,  Mohit Narang ,  Shang-Te Yang

IPC: G01S5/00 ,  G01S5/12 ,  G01S5/14 ,  H04W4/02 ,  H04W4/33 ,  H04W4/029 ,  H04W64/00 ,  H04W88/02

Abstract: Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. The method also includes performing front-back detection, performing stationary node detection, performing angle of arrival (AoA) error correction, and performing field of view (FOV) filtering. Performing indoor localization and tracking of the plurality of other wireless electronic devices includes providing an indication of a physical location of the plurality of other wireless electronic devices within the indoor environment.

公开(公告)号：US20250039636A1

公开(公告)日：2025-01-30

申请号：US18914967

申请日：2024-10-14

Applicant: Apple Inc.

Inventor： Amit S. Sant ,  Alejandro J. Marquez ,  Indranil S. Sen ,  Mohit Narang ,  Shang-Te Yang

IPC: H04W4/02 ,  G01S5/00 ,  G01S5/12 ,  G01S5/14 ,  H04B17/11 ,  H04B17/21 ,  H04W4/024 ,  H04W4/029 ,  H04W4/33 ,  H04W64/00 ,  H04W88/02

Abstract: Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. Location ambiguity mitigation is performed using characteristics of signals received by a reference node used to generate a radio frequency map of electronic devices.