公开(公告)号：US20140328488A1

公开(公告)日：2014-11-06

申请号：US13886157

申请日：2013-05-02

Applicant: Apple Inc.

Inventor： Ruben Caballero ,  Michael DiVincent ,  Indranil S. Sen ,  Robert W. Schlub ,  Mohit Narang ,  Ricardo R. Velasco ,  Christopher B. Crowe ,  Scott Vernon

IPC: H04R3/00

CPC classification number: H04R3/00 ,  G01S7/539 ,  G01S15/02 ,  H04B1/0343 ,  H04B1/3838 ,  H04B1/385 ,  H04M2250/12 ,  H04W52/0209 ,  H04W52/282 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/23 ,  Y02D70/26 ,  Y02D70/40

Abstract: An electronic device may include wireless circuitry that is configured to transmit wireless signals during operation. A maximum transmit power level may be established that serves as a cap on how much power is transmitted from the electronic device. Adjustments may be made to the maximum transmit power level in real time based on sensor signals and other information on the operating state of the electronic device. The sensor signals may include motion signals from an accelerometer. The sensor signals may also include ultrasonic sound detected by a microphone. Device orientation data may be used by the device to select whether to measure the ultrasonic sound using a front facing or rear facing microphone. Maximum transmit power level may also be adjusted based on whether or not sound is playing through an ear speaker in the device.

Abstract translation: 电子设备可以包括被配置为在操作期间发送无线信号的无线电路。 可以建立起用于从电子设备发送多少功率的上限的最大发射功率电平。 可以基于传感器信号和关于电子设备的操作状态的其他信息来实时调整最大发射功率电平。 传感器信号可以包括来自加速度计的运动信号。 传感器信号还可以包括由麦克风检测到的超声波。 设备方向数据可以由设备使用，以选择是使用面向前还是背面向麦克风来测量超声波声音。 还可以基于通过设备中的耳机扬声器播放声音来调整最大发射功率电平。

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：US11695443B2

公开(公告)日：2023-07-04

申请号：US17833772

申请日：2022-06-06

Applicant: Apple Inc.

Inventor： Digvijay A. Jadhav ,  Gary Leung ,  Mark D. Neumann ,  Indranil S. Sen

IPC: H04B1/3827 ,  H04W52/14 ,  H04W52/28 ,  H04W52/36

CPC classification number: H04B1/3838 ,  H04W52/143 ,  H04W52/283 ,  H04W52/367

Abstract: A dynamic specific absorption rate (SAR) may be implemented by monitoring and controlling power utilization of the various radio frequency (RF) emitting components over time within a mobile device. Power utilization may be tracked and modified to control the time-averaged RF exposure over a rolling time window. Periodically calculations of the updated rolling averages for RF transmissions may be performed based on the transmission data received from the mobile device components, and the continuously updated rolling averages of RF transmissions may be compared to time-average power utilization limits. Based on such comparisons, the mobile device may dynamically adjust the current transmissions of the radio transceivers and other RF emitting components on the mobile device.

公开(公告)号：US11502730B2

公开(公告)日：2022-11-15

申请号：US17228454

申请日：2021-04-12

Applicant: Apple Inc.

Inventor： Hsin-Yuo Liu ,  Peter M. Agboh ,  Mohit Narang ,  Indranil S. Sen ,  Nicholas M. McDonnell ,  Chia Yiaw Chong

IPC: H04B7/0413 ,  H03F3/68 ,  H04L5/00 ,  H04B1/38 ,  H04W4/80 ,  H03F3/24 ,  H03H9/02 ,  H03H9/17 ,  H03H9/64 ,  H04L5/14 ,  H04B1/00 ,  H04B1/40 ,  H04W88/06 ,  H04W84/12

Abstract: Devices and systems useful in concurrently receiving and transmitting Wi-Fi signals and Bluetooth signals in the same frequency band are provided. By way of example, an electronic device includes a transceiver configured to transmit data and to receive data over channels of a first wireless network and a second wireless network concurrently. The transceiver includes a plurality of filters configured to allow the transceiver to transmit the data and to receive the data in the same frequency band by reducing interference between signals of the first wireless network and the second wireless network.

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：US10979106B2

公开(公告)日：2021-04-13

申请号：US16874349

申请日：2020-05-14

Applicant: Apple Inc.

Inventor： Hsin-Yuo Liu ,  Peter M. Agboh ,  Mohit Narang ,  Indranil S. Sen ,  Nicholas M. McDonnell ,  Chia Yiaw Chong

IPC: H04B7/0413 ,  H04L5/00 ,  H04W4/80 ,  H04W88/06 ,  H04W84/12 ,  H03F3/68 ,  H04B1/38 ,  H03F3/24 ,  H03H9/02 ,  H03H9/17 ,  H03H9/64 ,  H04L5/14 ,  H04B1/00 ,  H04B1/40

Abstract: Devices and systems useful in concurrently receiving and transmitting Wi-Fi signals and Bluetooth signals in the same frequency band are provided. By way of example, an electronic device includes a transceiver configured to transmit data and to receive data over channels of a first wireless network and a second wireless network concurrently. The transceiver includes a plurality of filters configured to allow the transceiver to transmit the data and to receive the data in the same frequency band by reducing interference between signals of the first wireless network and the second wireless network.

公开(公告)号：US10939387B2

公开(公告)日：2021-03-02

申请号：US16381946

申请日：2019-04-11

Applicant: Apple Inc.

Inventor： Digvijay Arjunrao Jadhav ,  Indranil S. Sen ,  Jonathan C. King ,  Mohit Narang ,  Prathyusha Sangepu ,  Qiong Wu ,  Shrenik Milapchand ,  Vijay Gadde ,  Yu Chen

IPC: H04W52/26

Abstract: Multi-radio wireless network devices are capable of transmitting and/or receiving data from multiple radiofrequency (RF) networks at different bands. Total transmission power limitations may be in place due to, for example, safety reasons. As a result, active management of transmission power may be performed during simultaneous transmission in different bands and/or networks. In some embodiments, the management may take place on group-by-group basis and a network-by-network basis. Antennas may be grouped based on their relative positions and impact on radiation emitted by the devices.