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    RANGE CLASS ESTIMATION FOR RADIO FREQUENCY DEVICES
    11.
    发明申请
    RANGE CLASS ESTIMATION FOR RADIO FREQUENCY DEVICES 有权
    无线电频率设备的范围估计

    公开(公告)号：US20140358835A1

    公开(公告)日：2014-12-04

    申请号：US13905552

    申请日：2013-05-30

    Applicant: Apple Inc.

    Inventor： Lukas M. Marti ,  Shannon M. Ma ,  Pejman Lotfali Kazemi

    IPC: G06N5/02

    CPC classification number: G06N5/02 ,  G01S11/06 ,  H04B17/26 ,  H04B17/27 ,  H04B17/318 ,  H04B17/3911

    Abstract: Implementations are disclosed for obtaining a range state of a device operating in an indoor environment with radio frequency (RF) signal sources. In some implementations, windowed signal measurements obtained from RF signals transmitted by an RF signal source are classified into range classes that are defined by threshold values obtained from a RF signal propagation model. A range class observation is obtained by selecting a range class among a plurality of range classes based on a percentage of a total number of windowed signal measurements that are associated with the range class. The range class observation is provided as input to a state estimator that estimates a range class that accounts for process and/or measurement noise. The output of the state estimator is provided as input to a state machine.

    Abstract translation: 公开了实现用于获得在具有射频（RF）信号源的室内环境中工作的设备的范围状态。 在一些实施方案中，从由RF信号源发送的RF信号获得的窗口信号测量被分类为由从RF信号传播模型获得的阈值定义的范围等级。 通过基于与范围类别相关联的窗口化信号测量的总数的百分比来选择多个范围类别中的范围类别来获得范围类观察。 范围类观察被提供给估计考虑过程和/或测量噪声的范围类的状态估计器的输入。 状态估计器的输出被提供给状态机的输入。

    Range-free proximity determination
    15.
    发明授权
    Range-free proximity determination 有权

    公开(公告)号：US10080103B2

    公开(公告)日：2018-09-18

    申请号：US15891453

    申请日：2018-02-08

    Applicant: Apple Inc.

    Inventor： Pejman Lotfali Kazemi ,  Lukas M. Marti ,  Robert Mayor ,  Shannon M. Ma ,  Ronald K. Huang

    IPC: H04W24/00 ,  H04W4/021 ,  G01S5/02 ,  H04W64/00

    CPC classification number: H04W4/022 ,  G01S5/02 ,  G01S5/0252 ,  H04W64/006

    Abstract: Techniques of range free proximity determination are described. A mobile device can determine an entry into or exit from a proximity fence upon determining that the mobile device is sufficiently close to a signal source. The proximity fence can be a virtual fence defined by the signal source and associated with a service. The mobile device can detect signals from multiple signal sources. The mobile device can determine that, among the signal sources, one or more signal sources are located closest to the mobile device based on a ranking of the signal sources using signal strength. The mobile device can determine a probability indicating a confident level of the ranking. The mobile device can determine that the mobile device entered or exited a proximity fence associated with a highest ranked signal source satisfying a confidence threshold.

    Methods for calibrating receive signal strength data in wireless electronic devices
    16.
    发明授权
    Methods for calibrating receive signal strength data in wireless electronic devices 有权
    在无线电子设备中校准接收信号强度数据的方法

    公开(公告)号：US09401769B2

    公开(公告)日：2016-07-26

    申请号：US13909982

    申请日：2013-06-04

    Applicant: Apple Inc.

    Inventor： Robert W. Mayor ,  Pejman Lotfali Kazemi ,  Lukas M. Marti

    IPC: H04B15/00 ,  H04B17/00 ,  H04B17/21 ,  H04B17/318

    CPC classification number: H04B17/318 ,  H04B17/21

    Abstract: A wireless electronic device may include wireless communications circuitry and processing circuitry. The wireless communications circuitry may receive radio-frequency signals from external communications circuitry in a number of frequency channels of a communications band. The processing circuitry may gather received signal quality data such as receive signal strength indicator (RSSI) values from the radio-frequency signals received in each of the frequency channels. The processing circuitry may accumulate respective probability distributions of gathered RSSI values for each frequency channel and may compare each of the probability distributions to generate RSSI offset values for each frequency channel. The processing circuitry may gather additional RSSI values in one or more frequency channels and may adjust the additional RSSI values based on the associated RSSI offset values. The processing circuitry may use the adjusted RSSI values to determine an accurate location of the wireless electronic device.

    Abstract translation: 无线电子设备可以包括无线通信电路和处理电路。 无线通信电路可以在通信频带的多个频率信道中从外部通信电路接收射频信号。 处理电路可以从每个频道中接收的射频信号收集接收信号质量数据，例如接收信号强度指示符（RSSI）值。 处理电路可以累积每个频率信道的收集的RSSI值的各自的概率分布，并且可以比较每个概率分布以产生每个频率信道的RSSI偏移值。 处理电路可以在一个或多个频率信道中收集附加的RSSI值，并且可以基于相关联的RSSI偏移值来调整附加的RSSI值。 处理电路可以使用经调整的RSSI值来确定无线电子设备的准确位置。

    PROXIMITY FENCE
    17.
    发明申请
    PROXIMITY FENCE 有权
    临近性

    公开(公告)号：US20140274150A1

    公开(公告)日：2014-09-18

    申请号：US14191330

    申请日：2014-02-26

    Applicant: Apple Inc.

    Inventor： Lukas M. Marti ,  Shannon M. Ma ,  Robert Mayor ,  Augustin Prats ,  Brian J. Tucker ,  Christopher J. Edmonds ,  Joakim Linde ,  Pejman Lotfali Kazemi

    IPC: H04W4/02

    CPC classification number: H04W4/021 ,  H04B17/318 ,  H04W4/023 ,  H04W4/80 ,  H04W8/18 ,  H04W40/244 ,  H04W88/02

    Abstract: A proximity fence can be a location-agnostic fence defined by signal sources having no geographic location information. The proximity fence can correspond to a group of signal sources instead of a point location fixed to latitude and longitude coordinates. A signal source can be a radio frequency (RF) transmitter broadcasting a beacon signal. The beacon signal can include a payload that includes an identifier indicating a category to which the signal source belongs, and one or more labels indicating one or more subcategories to which the signal source belongs. The proximity fence defined by the group of signal sources can trigger different functions of application programs associated with the proximity fence on a mobile device, when the mobile device moves within the proximity fence and enters and exits different parts of the proximity fence corresponding to the different subcategories.

    Abstract translation: 靠近栅栏可以是由不具有地理位置信息的信号源定义的与位置无关的栅栏。 接近栅栏可以对应于一组信号源，而不是固定在纬度和经度坐标上的点位置。 信号源可以是广播信标信号的射频（RF）发射机。 信标信号可以包括包括指示信号源所属的类别的标识符和指示信号源所属的一个或多个子类别的一个或多个标签的有效载荷。 当移动设备在邻近围栏内移动并进入和离开对应于不同的邻近栅栏的不同部分时，由信号源组定义的邻近栅栏可以触发与移动设备上的邻近栅栏相关联的应用程序的不同功能 子类别。

    Parking event detection and location estimation
    19.
    发明授权
    Parking event detection and location estimation 有权

    公开(公告)号：US10121374B2

    公开(公告)日：2018-11-06

    申请号：US15273533

    申请日：2016-09-22

    Applicant: Apple Inc.

    Inventor： Pejman Lotfali Kazemi ,  Lili Cao ,  Sunny Kai Pang Chow ,  Gunes Dervisoglu ,  Anh Phan ,  Ryan David Shelby ,  Ronald K. Huang

    IPC: G08G1/123 ,  G08G1/14 ,  H04W4/04

    Abstract: Systems, methods, devices and computer-readable mediums are disclosed for parking event detection and location estimation. In some implementations, a method comprises: determining, by a processor of a mobile device, a first activity state indicative of a possible parking event; obtaining, by the processor, a speed of the mobile device from a global navigation satellite system (GNSS) of the mobile device; obtaining, by the processor, pedometer data from a digital pedometer of the mobile device; determining, by the processor, a second activity state indicative of a possible parking event based at least in part on the GNSS speed and pedometer data; and responsive to the second activity state, estimating, by the processor, a location of the vehicle.

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