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    METHODS FOR ADDRESSING AGING OF XO CRYSTALS
    11.
    发明申请
    METHODS FOR ADDRESSING AGING OF XO CRYSTALS 有权
    解决XO晶体老化的方法

    公开(公告)号：US20140028403A1

    公开(公告)日：2014-01-30

    申请号：US13829603

    申请日：2013-03-14

    Applicant: QUALCOMM INCORPORATED

    Inventor： Daniel Fred FILIPOVIC ,  Sasidhar MOVVA ,  Vishal AGARWAL ,  Dominic Gerard FARMER ,  Sridhar BANDARU

    IPC: H03L7/00

    CPC classification number: H03L7/00 ,  H03L1/00 ,  H03L1/026

    Abstract: Methods, apparatuses, systems and computer-readable media for addressing the aging of oscillation (XO) crystals are presented. Some embodiments may determine a change of age of the XO crystal since last prior use of the XO crystal. Embodiments may then determine that at least one calibration parameter is not suitable for use in at least one calibration technique of the XO crystal, based on the change of age of the XO crystal. Embodiments may then determine at least one fresh calibration parameter configured to update the at least one calibration parameter for suitable use in the at least one calibration technique of the XO crystal.

    Abstract translation: 提出了用于解决振荡（XO）晶体老化的方法，装置，系统和计算机可读介质。 一些实施方案可以确定自上次使用XO晶体以来XO晶体的年龄变化。 然后，实施例可以基于XO晶体的年龄变化来确定至少一个校准参数不适用于XO晶体的至少一个校准技术。 实施例然后可以确定至少一个新的校准参数，其被配置为更新所述至少一个校准参数，以便在XO晶体的至少一个校准技术中适合使用。

    Strong WWAN-WLAN Intermodulation (IM) Mitigation and Avoidance Techniques
    12.
    发明申请
    Strong WWAN-WLAN Intermodulation (IM) Mitigation and Avoidance Techniques 审中-公开
    强大的WWAN-WLAN互调（IM）缓解和避免技术

    公开(公告)号：US20130207839A1

    公开(公告)日：2013-08-15

    申请号：US13741942

    申请日：2013-01-15

    Applicant: QUALCOMM Incorporated

    Inventor： Emilija Milorad SIMIC ,  Timothy Paul PALS ,  Dominic Gerard FARMER

    IPC: G01S19/21

    CPC classification number: G01S19/21 ,  G01S19/32 ,  G01S19/33

    Abstract: Apparatuses, methods, and computer-readable media for mitigating intermodulation (IM) distortion in wireless communications devices and systems are presented. Aspects of the present invention include several different techniques that can be used separately or in tandem. For example, a receiver mitigates IM distortion by altogether avoiding reception of satellites in a GNSS band(s) that are affected by it (e.g. “victim’ or “affected” band). A receiver may instead switch reception of satellites in a GNSS band that are affected by the IM distortion (e.g. the “victim” band) and not in a dedicated tracking mode, to another GNSS band that is not affected (e.g. “non-victim” band), while still maintaining tracking of satellites in the original victim GNSS band that are in a dedicated tracking mode. A receiver may also shift a local oscillator (LO) frequency. A receiver may also perform enhanced cross-correlation techniques, such a widening or expanding an existing Xcorr algorithm mask.

    Abstract translation: 提出了用于减轻无线通信设备和系统中的互调（IM）失真的装置，方法和计算机可读介质。 本发明的方面包括可以单独使用或串联使用的几种不同的技术。 例如，接收机通过总共避免在受其影响的GNSS频带（例如“受害者”或“受影响”频带）中的卫星的接收来减轻IM失真，接收机可以改变在GNSS频带中接收卫星 受IM失真（例如“受害者”频带）而不是专用追踪模式影响到另一个不受影响的GNSS频段（例如“非受害者”频段），同时仍然保持对原始卫星的跟踪 接收机也可以移动本地振荡器（LO）频率，接收机还可以执行增强的互相关技术，例如扩展或扩展现有的Xcorr算法掩码。

    CARRIER PHASE BASED MULTIPATH (MP) DETECTION
    14.
    发明申请
    CARRIER PHASE BASED MULTIPATH (MP) DETECTION 有权

    公开(公告)号：US20220099841A1

    公开(公告)日：2022-03-31

    申请号：US17034255

    申请日：2020-09-28

    Applicant: QUALCOMM Incorporated

    Inventor： Dominic Gerard FARMER ,  Qingwen ZHANG

    IPC: G01S19/22 ,  G01S19/29

    Abstract: A multipath (MP) carrier phase detector is disclosed that uses phase differences in the output of Early/Prompt/Late (EPL) correlation for MP detection. Embodiments may take coherent integrations of EPL correlator outputs and determine the respective carrier phase of each output. Phase differences can then be computed, and integer cycles and biases can be removed. MP can then be identified if a maximum phase difference of the EPL correlator outputs are determined to be above a certain threshold. According to some embodiments, false positives may be reduced by averaging phases and/or phase differences over a plurality of samples, and/or if a threshold number of consecutive MP detections have been made.

    SECURE GLOBAL NAVIGATION SATELLITE SYSTEMS
    15.
    发明申请
    SECURE GLOBAL NAVIGATION SATELLITE SYSTEMS 审中-公开

    公开(公告)号：US20190113625A1

    公开(公告)日：2019-04-18

    申请号：US15787262

    申请日：2017-10-18

    Applicant: QUALCOMM Incorporated

    Inventor： Dominic Gerard FARMER ,  Mangesh CHANSARKAR

    IPC: G01S19/20 ,  G01S19/42 ,  G01S19/07 ,  G01S19/08

    Abstract: Apparatuses and methods of securing Global Navigation Satellite Systems are disclosure. In one exemplary embodiment, a mobile device may comprise: a communication interface configured to monitor signals from a plurality of satellites, a processor configured to determine impairment of one or more satellites in the plurality of satellites using the signals form the plurality of satellites, a memory configured to store a status of the determined impairment of one or more satellites in the plurality of satellites, and the communication interface that transmits the status of the determined impairment of the one or more satellites in the plurality of satellites to a server. The processor further determines a position of the mobile device using the status of the determined impairment of one or more satellites in the plurality of satellites, and stores the determined position and a corresponding digital certificate indicative of authenticity of the determined position in a memory.

    MEASUREMENT BATCHING
    17.
    发明申请
    MEASUREMENT BATCHING 审中-公开

    公开(公告)号：US20180091946A1

    公开(公告)日：2018-03-29

    申请号：US15275156

    申请日：2016-09-23

    Applicant: QUALCOMM Incorporated

    Inventor： Sai Pradeep VENKATRAMAN ,  Dominic Gerard FARMER ,  Aditya SRIVASTAVA ,  Gengsheng ZHANG

    IPC: H04W4/02 ,  H04L29/06 ,  H04L12/26

    CPC classification number: H04W4/025 ,  G01S5/0252 ,  H04L43/065 ,  H04L67/42 ,  H04W4/029

    Abstract: Method, mobile device, computer program product, and apparatus for performing Fine Grain Position Data Collection is described. In one aspect a mobile device performs measurement batching of data, for example positioning and AP measurement data. In some aspects, the mobile device processes positioning and AP measurement data in response to a batch trigger. The mobile device may send the processed measurement batch to a server for analysis or processing. A batch trigger may include receiving a positioning fix with high confidence such that the mobile device may backfilter or otherwise correct mobile sensor based positioning data associated with AP measurements. The server may interpret the data from the measurement batches identified from a number of different mobile devices to calculate position of APs within an environment.

    SECURE GLOBAL NAVIGATION SATELLITE SYSTEMS
    19.
    发明申请
    SECURE GLOBAL NAVIGATION SATELLITE SYSTEMS 审中-公开

    公开(公告)号：US20200379121A1

    公开(公告)日：2020-12-03

    申请号：US16994485

    申请日：2020-08-14

    Applicant: QUALCOMM Incorporated

    Inventor： Dominic Gerard FARMER ,  Mangesh CHANSARKAR

    IPC: G01S19/20 ,  G01S19/08 ,  G01S19/07 ,  G01S19/42 ,  G01S5/00

    Abstract: Apparatuses and methods of securing Global Navigation Satellite Systems are disclosure. In one exemplary embodiment, a mobile device may comprise: a communication interface configured to monitor signals from a plurality of satellites, a processor configured to determine impairment of one or more satellites in the plurality of satellites using the signals form the plurality of satellites, a memory configured to store a status of the determined impairment of one or more satellites in the plurality of satellites, and the communication interface that transmits the status of the determined impairment of the one or more satellites in the plurality of satellites to a server. The processor further determines a position of the mobile device using the status of the determined impairment of one or more satellites in the plurality of satellites, and stores the determined position and a corresponding digital certificate indicative of authenticity of the determined position in a memory.

    POSITION VELOCITY ASSISTED CLOCK ESTIMATION
    20.
    发明申请
    POSITION VELOCITY ASSISTED CLOCK ESTIMATION 审中-公开

    公开(公告)号：US20200096949A1

    公开(公告)日：2020-03-26

    申请号：US16579322

    申请日：2019-09-23

    Applicant: QUALCOMM Incorporated

    Inventor： Sumit BHATTACHARYA ,  David TUCK ,  Naveen Kumar BONDA ,  Dominic Gerard FARMER

    IPC: G04R20/02 ,  G01S19/25 ,  H04W4/02 ,  H04W4/40

    Abstract: A method for maintaining timing accuracy in a mobile device includes: obtaining a range estimate using a signal received from a timing information source via a communication unit of the mobile device; obtaining position and velocity estimate information for the mobile device from a source of position and velocity information separate from the timing information source, the position and velocity estimate information being obtained from at least one sensor of the mobile device, or via a communication unit of the mobile device using a Vehicle-to-Everything wireless communication protocol, or a combination thereof; determining estimated clock parameters based on the position and velocity estimate information and the range estimate; and adjusting a clock of the mobile device based on the estimated clock parameters in response to a position-and-velocity-assisted timing uncertainty corresponding to the estimated clock parameters being below a timing uncertainty threshold.

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