公开(公告)号：US10965335B1

公开(公告)日：2021-03-30

申请号：US16787617

申请日：2020-02-11

Applicant: Apple Inc.

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

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

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：US20200274583A1

公开(公告)日：2020-08-27

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 ,  H03F3/68 ,  H04L5/00 ,  H04B1/38 ,  H04W4/80 ,  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：US10720971B2

公开(公告)日：2020-07-21

申请号：US16267104

申请日：2019-02-04

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

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：US20190379435A1

公开(公告)日：2019-12-12

申请号：US16003986

申请日：2018-06-08

Applicant: Apple Inc.

Inventor： Raghuram C. Kamath ,  Diego C. Hernandez ,  Harneet Singh Oberoi ,  Indranil S. Sen

IPC: H04B7/0452 ,  H04L29/06 ,  H04W40/04

Abstract: Systems, methods, and devices for grouping client devices based on sensor data in an assisted wireless communication system are provided. Sensor data may include device mobility, device type, and device application data usage, among other characteristics. An assisted wireless communication system may include client devices sending data to an access point. The clients may send conventional protocol data over a channel and, concurrently, send sensor data over an alternative channel. In some cases, client devices may exchange their protocol data, modify their own protocol data based on the exchanged data, and send the modified protocol data to the access point. This may allow the clients to adjust their grouping.

公开(公告)号：US20190297457A1

公开(公告)日：2019-09-26

申请号：US16371838

申请日：2019-04-01

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 ,  G07C9/00 ,  B60R25/24

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：US20190199137A1

公开(公告)日：2019-06-27

申请号：US15902875

申请日：2018-02-22

Applicant: Apple Inc.

Inventor： Bing Jiang ,  Martin Schauer ,  Indranil S. Sen ,  Jouya Jadidian ,  Mark D. Neumann ,  Mohit Narang ,  Vaneet Pathak ,  Yi Jiang

IPC: H02J50/23 ,  H02J50/10 ,  H01Q21/06 ,  H01Q9/04

Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may have microwave antennas that extend along an axis in a staggered arrangement. In the staggered arrangement, the microwave antennas are positioned on alternating sides of the axis. Each microwave antenna is elongated along a dimension that is perpendicular to the axis. Multiple antennas may overlap a wireless power receiving antenna in the wireless power receiving device. Control circuitry may use oscillator and amplifier circuitry to provide antennas that have been overlapped by the wireless power receiving antenna with drive signals. The drive signals may be adjusted based on feedback from the wireless power receiving device to enhance power transmission efficiency. The system may have a wireless power transmitting device with inductive wireless power transmitting coils.

公开(公告)号：US20190098507A1

公开(公告)日：2019-03-28

申请号：US15883785

申请日：2018-01-30

Applicant: Apple Inc.

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

IPC: H04W12/08 ,  G01S5/02 ,  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：US10200183B2

公开(公告)日：2019-02-05

申请号：US15189874

申请日：2016-06-22

Applicant: APPLE INC.

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

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

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：US09602919B2

公开(公告)日：2017-03-21

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: H04R29/00 ,  H04R1/02 ,  H04R9/06 ,  H04R3/00 ,  H04B1/3827 ,  H04W52/02 ,  H04B1/034

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.

公开(公告)号：US20150349870A1

公开(公告)日：2015-12-03

申请号：US14291769

申请日：2014-05-30

Applicant: Apple Inc.

Inventor： Xiaojun Chen ,  Peter M. Agboh ,  Indranil S. Sen ,  Hsin-Yuo Liu ,  Vusthia Sunil Reddy ,  Diego C. Hernandez ,  Digvijay A. Jadhav ,  Mohit Narang ,  Ruben Caballero

IPC: H04B7/08

CPC classification number: H04B7/0817 ,  H04B7/0822

Abstract: Dynamic antenna switching based on weighted signal to noise ratio (SNR). A wireless device may include multiple antennas. SNR at each active antenna may be calculated. An antenna-specific weight may be applied to each antenna's SNR. The antenna-specific weights may further be radio specific and/or transmit or receive specific in some cases. Antenna selection (possibly just for a specific radio and/or for transmit or receive operations, depending on the specificity of the antenna weights), including potentially switching which antenna is used, may be based on the resulting weighted SNR values for each antenna. If the antenna-specific weights are radio specific and/or transmit or receive operation specific, the method may be performed multiple times with different antenna-specific weights to select antenna(s) for different radios and/or for other operations.

Abstract translation: 基于加权信噪比（SNR）的动态天线切换。 无线设备可以包括多个天线。 可以计算每个有源天线的SNR。 天线特定权重可以应用于每个天线的SNR。 在某些情况下，天线特定权重可以进一步是无线电特定的和/或发送或接收特定的。 天线选择（可能仅适用于特定无线电和/或用于发射或接收操作，取决于天线权重的特异性），包括潜在地切换使用哪个天线，可以基于所得到的每个天线的加权SNR值。 如果天线特定权重是无线电特定的和/或发送或接收操作特定的，则可以使用不同的天线特定权重多次执行该方法，以选择用于不同无线电和/或其他操作的天线。