WI-FI Z-AXIS POSITIONING
    41.
    发明申请

    公开(公告)号:US20210400618A1

    公开(公告)日:2021-12-23

    申请号:US17163159

    申请日:2021-01-29

    Applicant: Apple Inc.

    Abstract: Described herein are techniques to enable a mobile device to determine a Z-axis coordinate based on altitudes associated with Wi-Fi access points detected in a Wi-Fi scan by the mobile device. One embodiment provides for an electronic device configured to compute a weighted average of Z-axis coordinates associated with detected Wi-Fi access points and determine a Z-axis coordinate for the electronic device based on the weighted average.

    WI-FI Z-AXIS POSITIONING
    42.
    发明申请

    公开(公告)号:US20210400615A1

    公开(公告)日:2021-12-23

    申请号:US17351900

    申请日:2021-06-18

    Applicant: Apple Inc.

    Abstract: Described herein are techniques to enable a mobile device to determine a Z-axis coordinate based on altitudes associated with Wi-Fi access points detected in a Wi-Fi scan by the mobile device. One embodiment provides for an electronic device configured to compute a weighted average of Z-axis coordinates associated with detected Wi-Fi access points and determine a Z-axis coordinate for the electronic device based on the weighted average.

    Fast GPS recovery using map vector data

    公开(公告)号:US09798011B2

    公开(公告)日:2017-10-24

    申请号:US14015976

    申请日:2013-08-30

    Applicant: Apple Inc.

    Abstract: Methods and apparatuses to assist a global positioning system (GPS) module to determine GPS position estimates for a wireless communication device is disclosed. Processing circuitry in the wireless communication device determines a potential or an actual inaccuracy in a GPS position estimate obtained from a GPS module. The processing circuitry obtains a set of map vector data stored in or associated with the wireless communication device. The processing circuitry determines a location estimate of the wireless communication device based on at least a portion of the set of map vector data. The processing circuitry provides the location estimate to the GPS module and obtains an updated GPS position estimate from the GPS module, the updated GPS position estimate based at least in part on the location estimate provided to the GPS module.

    Method and apparatus for location determination with WLAN/WPAN/sensor support

    公开(公告)号:US09763050B2

    公开(公告)日:2017-09-12

    申请号:US15014477

    申请日:2016-02-03

    Applicant: Apple Inc.

    CPC classification number: H04W4/025 G01C5/06 H04W4/02 H04W4/33 H04W4/90

    Abstract: Apparatus and methods for estimating a location of a wireless device in communication with a wireless network, such as a UMTS network, based at least in part on WLAN/WPAN AP measurements and/or barometric measurements are disclosed. The wireless device responds to a location capability inquiry from the wireless network by providing a response that indicates the wireless device is configurable to estimate its location based on WLAN/WPAN AP and/or barometric measurements. The wireless network sends WLAN/WPAN AP and/or barometric reference information to the wireless device to assist in estimating its location. The wireless device measures one or more WLAN/WPAN APs, and the wireless device uses the WLAN/WPAN AP and/or barometric measurements to estimate its location. In some embodiments, GPS/GNSS information is used in conjunction with WLAN/WPAN AP and/or barometric measurements to estimate the location of the wireless device.

    Positioning accuracy using 3D building models
    48.
    发明授权
    Positioning accuracy using 3D building models 有权
    使用3D建筑模型的定位精度

    公开(公告)号:US09408175B2

    公开(公告)日:2016-08-02

    申请号:US14503046

    申请日:2014-09-30

    Applicant: APPLE INC.

    Abstract: A mobile device adjusts the extents to which it depends on various satellites to estimate its global position based on the predicted probability for each such satellite that a ray extending from that satellite to the mobile device is obstructed by a building. The mobile device can predict the probabilities of building obstructions based on a digital model of the environment in which the mobile device is estimated to be. The mobile device weights the extent of uncertainty for each satellite's global positioning data based on the predicted probability of obstruction for that satellite. Using these weighted uncertainties, the mobile device selects the extents to which it relies on each satellite's global positioning data when estimating the mobile device's current global position.

    Abstract translation: 移动设备根据每个这样的卫星预测的从卫星到移动设备的射线被建筑物阻挡的预测概率来调整它依赖于各种卫星的范围来估计其全球位置。 移动设备可以基于估计移动设备的环境的数字模型来预测建筑障碍物的概率。 移动设备基于预测的该卫星的阻塞概率来加权每个卫星的全球定位数据的不确定性程度。 使用这些加权不确定性,当估计移动设备的当前全球位置时,移动设备选择它依赖于每个卫星的全球定位数据的范围。

    Methods for calibrating receive signal strength data in wireless electronic devices
    49.
    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.

    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。

    POSITIONING ACCURACY USING 3D BUILDING MODELS
    50.
    发明申请
    POSITIONING ACCURACY USING 3D BUILDING MODELS 有权
    使用3D建筑模型的定位精度

    公开(公告)号:US20150319729A1

    公开(公告)日:2015-11-05

    申请号:US14503046

    申请日:2014-09-30

    Applicant: APPLE INC.

    Abstract: A mobile device adjusts the extents to which it depends on various satellites to estimate its global position based on the predicted probability for each such satellite that a ray extending from that satellite to the mobile device is obstructed by a building. The mobile device can predict the probabilities of building obstructions based on a digital model of the environment in which the mobile device is estimated to be. The mobile device weights the extent of uncertainty for each satellite's global positioning data based on the predicted probability of obstruction for that satellite. Using these weighted uncertainties, the mobile device selects the extents to which it relies on each satellite's global positioning data when estimating the mobile device's current global position.

    Abstract translation: 移动设备根据每个这样的卫星预测的从卫星到移动设备的射线被建筑物阻挡的预测概率来调整它依赖于各种卫星的范围来估计其全球位置。 移动设备可以基于估计移动设备的环境的数字模型来预测建筑障碍物的概率。 移动设备基于预测的该卫星的阻塞概率来加权每个卫星的全球定位数据的不确定性程度。 使用这些加权不确定性,当估计移动设备的当前全球位置时,移动设备选择它依赖于每个卫星的全球定位数据的范围。

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