公开(公告)号：US20210099194A1

公开(公告)日：2021-04-01

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 ,  H04W52/36 ,  H04W52/14 ,  H04W52/28

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：US20210051532A1

公开(公告)日：2021-02-18

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

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：US10756797B2

公开(公告)日：2020-08-25

申请号：US16128867

申请日：2018-09-12

Applicant: APPLE INC.

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

IPC: H04B7/06 ,  H04B17/26 ,  H04W48/20 ,  H04B7/0413 ,  H04B17/318 ,  H04W84/18

Abstract: A user equipment (UE) including at least two antennas configured to allow the UE to communicate via a first connection. The UE selects a connection performance parameter associated with the first connection, generates historical measurement information for the at least two antennas based on the connection performance parameter, for the plurality of antennas, the historical measurement information indicating an expected performance associated with using a selected one of the at least two antennas for a packet transmission and selects, based at least on the historical measurement information, one of the at least two antennas for use in transmitting the packet.

公开(公告)号：US10714983B2

公开(公告)日：2020-07-14

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: H02J50/12 ,  H02J50/23 ,  H02J50/10 ,  H01Q9/04 ,  H01Q21/06 ,  H04B5/00 ,  H02J50/80

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：US20200004312A1

公开(公告)日：2020-01-02

申请号：US16569383

申请日：2019-09-12

Applicant: Apple Inc.

Inventor： Diego C. Hernandez ,  Harneet Singh Oberoi ,  Indranil S. Sen ,  Kevin C. Camilleri ,  Ragburam C. Kamath ,  Vusthla Sunil Reddy

IPC: G06F1/3212 ,  G06F1/3234

Abstract: A technique for dynamically adjusting power use of an input/output (I/O) interface of an electronic device is provided. The electronic device includes an input/output (I/O) interface that facilitates electronic communications with a receiving electronic device, at a particular transmission rate that is dynamically changeable by the electronic device. Transmission power and transmission rate adjustment circuitry determines whether a step-down in a transmission power used for signal transmission at the particular transmission rate is desirable. When desirable, the transmission power is dynamically adjusted down one step, such that less power is used by the I/O interface during the electronic communications.

公开(公告)号：US10390313B2

公开(公告)日：2019-08-20

申请号：US15014506

申请日：2016-02-03

Applicant: Apple Inc.

Inventor： Mohit Narang ,  Peter Agboh ,  Vusthla Sunil Reddy ,  Chia Yiaw Chong ,  Indranil S. Sen ,  Ruben Caballero ,  Manjit S. Walia ,  Xi Yang

IPC: H04W52/28 ,  H04W72/04 ,  H04W4/02 ,  H04W52/02 ,  H04W4/80

Abstract: In order to improve communication with another electronic device, during an advertising mode an electronic device (such as a smartphone) may transmit a packet with advertising information using a default transmit power level. Then, based on feedback about a performance metric associated with the communication from the other electronic device, the electronic device may selectively increase the transmit power level for a subsequent packet. Because this selective increase in the transmit power level may increase the overall power consumption, the change in the transmit power level also may depend on one or more factors, such as a battery power level of the electronic device. However, the selective increase in the transmit power level may, in some instances, decrease the overall power consumption by reducing or eliminating retries.

公开(公告)号：US10285013B2

公开(公告)日：2019-05-07

申请号：US15894774

申请日：2018-02-12

Applicant: Apple Inc.

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

IPC: H04W4/02 ,  B60R25/24 ,  G07C9/00

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：US10263753B2

公开(公告)日：2019-04-16

申请号：US14850834

申请日：2015-09-10

Applicant: Apple Inc.

Inventor： Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Diego C. Hernandez ,  Peter M. Agboh ,  Mohit Narang ,  Ruben Caballero ,  Indranil S. Sen

IPC: H04L5/00 ,  H04W72/08 ,  H04W84/12 ,  H04W72/04

Abstract: In order to improve the quality of communication between electronic devices, one or more sub-channels used during communication between the electronic devices are dynamically modified based on one or more performance metrics and allowed transmit powers of the sub-channels. In particular, when the one or more performance metrics indicate that a distance between the electronic devices falls within a mid-range of distances, the one or more performance metrics may be used to guide selective changes to the sub-channels used during the communication based on the allowed transmit powers. The changes to the sub-channels used during the communication may increase, decrease or leave the total bandwidth unchanged. Moreover, by changing the sub-channels used during the communication, the allowed transmit power(s) of the sub-channel(s) used may be increased, which may improve the performance during the communication.

公开(公告)号：US20180234797A1

公开(公告)日：2018-08-16

申请号：US15894774

申请日：2018-02-12

Applicant: Apple Inc.

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

IPC: H04W4/02 ,  G07C9/00

CPC classification number: H04W4/023 ,  B60R25/24 ,  B60R2325/205 ,  G07C9/00119

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：US20180091962A1

公开(公告)日：2018-03-29

申请号：US15619142

申请日：2017-06-09

Applicant: Apple Inc.

Inventor： Diego C. Hernandez ,  Indranil S. Sen ,  Raghuram C. Kamath ,  Harneet Singh Oberoi ,  Gaurav C. Khambholja ,  Swapnil S. Jain ,  Qiong Wu ,  Harsha Shirahatti ,  Hsin-Yuo Liu

IPC: H04W4/22 ,  H04W76/00 ,  H04M1/725 ,  G01S19/17

CPC classification number: H04W4/90 ,  G01S19/17 ,  H04M1/72536 ,  H04M1/72538 ,  H04W4/02 ,  H04W64/00 ,  H04W76/50 ,  H04W84/042

Abstract: Resource allocation logic in a user device can determine allocation of a shared resource among different communication modules supporting a number of different communication types (e.g., GNSS, cellular, Wi-Fi, and/or Bluetooth communications) in a context-dependent manner. For example, the logic can determine an operating context of the user device. Based on the operating context, the logic can assign a priority to each of the signal types. The shared resource can be allocated among the signal types based on the priority.