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    Broadcast ranging messages for WLAN RTT measurements
    21.
    发明授权
    Broadcast ranging messages for WLAN RTT measurements 有权

    公开(公告)号：US09807637B2

    公开(公告)日：2017-10-31

    申请号：US14862985

    申请日：2015-09-23

    Applicant: QUALCOMM Incorporated

    Inventor： Ashok Bhatia ,  Vishal Agarwal ,  Dominic Gerard Farmer ,  Carlos Horacio Aldana

    IPC: H04W64/00 ,  H04W24/10 ,  H04W72/00 ,  H04L12/26

    CPC classification number: H04W24/10 ,  H04L43/0864 ,  H04W64/00 ,  H04W72/005

    Abstract: In one aspect, a method performed by an access point in a wireless local area network (WLAN), includes receiving a first ranging request message from a first device and monitoring for a second ranging request message from a second device on a channel of the WLAN. The first ranging request message includes a device identifier of the first device and the second ranging request message includes a device identifier of the second device. In response to receiving the second ranging request message, the access point combines the device identifier of the first device, first timing information associated with the first ranging request message, the device identifier of the second device, and second timing information associated with the second ranging request message into a single ranging response message. The access point then broadcasts the single ranging response message on the channel of the WLAN.

    METHOD AND APPARATUS TO DETERMINE TIME AND DISTANCE BETWEEN TRANSCEIVERS USING PHASE MEASUREMENTS
    23.
    发明申请
    METHOD AND APPARATUS TO DETERMINE TIME AND DISTANCE BETWEEN TRANSCEIVERS USING PHASE MEASUREMENTS 有权
    使用相位测量法确定收货人之间的时间和距离的方法和装置

    公开(公告)号：US20140233624A1

    公开(公告)日：2014-08-21

    申请号：US13770792

    申请日：2013-02-19

    Applicant: QUALCOMM INCORPORATED

    Inventor： Rayman Wai Pon ,  Dominic Gerard Farmer

    IPC: H04W24/00

    CPC classification number: H04L27/2665 ,  G01S5/14 ,  H04J3/0682 ,  H04L27/2662 ,  H04L43/0858 ,  H04L43/0864 ,  H04W24/00 ,  H04W56/00

    Abstract: Systems, apparatuses and methods are disclosed for estimating a signal travel time, and thus distance between transceivers, in an orthogonal frequency division multiplexing (OFDM) system. The signal travel time is measured between a transmit time (tT) and a receive window time (twindow) adjusted by the phase delay (TΦ). The phase delay (TΦ) is determined as a difference between a receive time (tR) and the receive window time (twindow). The receive time (tR) may be determined based on either an amplitude of the received signal at the receive window time (twindow) or when the received signal crosses a positive-negative axis. In synchronous systems, either a one-way time (OWT) or round-trip time (RTT) may be used for estimation. In asynchronous systems, an RTT is used for estimation.

    Abstract translation: 公开了用于在正交频分复用（OFDM）系统中估计信号行进时间，以及收发器之间的距离的系统，装置和方法。 在通过相位延迟（TΦ）调整的发送时间（tT）和接收窗口时间（twindow）之间测量信号行进时间。 相位延迟（TΦ）被确定为接收时间（tR）和接收窗口时间（twindow）之间的差。 接收时间（tR）可以基于在接收窗口时间（twindow）处的接收信号的幅度或者当接收信号与正负轴交叉时确定。 在同步系统中，单向时间（OWT）或往返时间（RTT）可以用于估计。 在异步系统中，RTT用于估计。

    Secure global navigation satellite systems
    25.
    发明授权
    Secure global navigation satellite systems 有权

    公开(公告)号：US10830895B2

    公开(公告)日：2020-11-10

    申请号：US15787262

    申请日：2017-10-18

    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.

    METHOD AND APPARATUS TO DETERMINE TIME AND DISTANCE BETWEEN TRANSCEIVERS USING PHASE MEASUREMENTS
    27.
    发明申请
    METHOD AND APPARATUS TO DETERMINE TIME AND DISTANCE BETWEEN TRANSCEIVERS USING PHASE MEASUREMENTS 审中-公开
    使用相位测量法确定收货人之间的时间和距离的方法和装置

    公开(公告)号：US20150195117A1

    公开(公告)日：2015-07-09

    申请号：US14664616

    申请日：2015-03-20

    Applicant: QUALCOMM Incorporated

    Inventor： Rayman Wai Pon ,  Dominic Gerard Farmer

    IPC: H04L27/26

    CPC classification number: H04L27/2665 ,  G01S5/14 ,  H04J3/0682 ,  H04L27/2662 ,  H04L43/0858 ,  H04L43/0864 ,  H04W24/00 ,  H04W56/00

    Abstract: Systems, apparatuses and methods are disclosed for estimating a signal travel time, and thus distance between transceivers, in an orthogonal frequency division multiplexing (OFDM) system. The signal travel time is measured between a transmit time (tT) and a receive window time (twindow) adjusted by the phase delay (TΦ). The phase delay (TΦ) is determined as a difference between a receive time (tR) and the receive window time (twindow). The receive time (tR) may be determined based on either an amplitude of the received signal at the receive window time (twindow) or when the received signal crosses a positive-negative axis. In synchronous systems, either a one-way time (OWT) or round-trip time (RTT) may be used for estimation. In asynchronous systems, an RTT is used for estimation.

    Abstract translation: 公开了用于在正交频分复用（OFDM）系统中估计信号行进时间，以及收发器之间的距离的系统，装置和方法。 在通过相位延迟（TΦ）调整的发送时间（tT）和接收窗口时间（twindow）之间测量信号行进时间。 相位延迟（TΦ）被确定为接收时间（tR）和接收窗口时间（twindow）之间的差。 接收时间（tR）可以基于在接收窗口时间（twindow）处的接收信号的幅度或者当接收信号与正负轴交叉时确定。 在同步系统中，单向时间（OWT）或往返时间（RTT）可以用于估计。 在异步系统中，RTT用于估计。

    Method and apparatus to determine time and distance between transceivers using phase measurements
    28.
    发明授权
    Method and apparatus to determine time and distance between transceivers using phase measurements 有权
    使用相位测量来确定收发器之间的时间和距离的方法和装置

    公开(公告)号：US09001878B2

    公开(公告)日：2015-04-07

    申请号：US13770792

    申请日：2013-02-19

    Applicant: QUALCOMM Incorporated

    Inventor： Rayman Wai Pon ,  Dominic Gerard Farmer

    IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20 ,  H04W24/00 ,  H04J3/06 ,  H04L12/26 ,  G01S5/14 ,  H04L27/26

    CPC classification number: H04L27/2665 ,  G01S5/14 ,  H04J3/0682 ,  H04L27/2662 ,  H04L43/0858 ,  H04L43/0864 ,  H04W24/00 ,  H04W56/00

    Abstract: Systems, apparatuses and methods are disclosed for estimating a signal travel time, and thus distance between transceivers, in an orthogonal frequency division multiplexing (OFDM) system. The signal travel time is measured between a transmit time (tT) and a receive window time (twindow) adjusted by the phase delay (TΦ). The phase delay (TΦ) is determined as a difference between a receive time (tR) and the receive window time (twindow). The receive time (tR) may be determined based on either an amplitude of the received signal at the receive window time (twindow) or when the received signal crosses a positive-negative axis. In synchronous systems, either a one-way time (OWT) or round-trip time (RTT) may be used for estimation. In asynchronous systems, an RTT is used for estimation.

    Abstract translation: 公开了用于在正交频分复用（OFDM）系统中估计信号行进时间，以及收发器之间的距离的系统，装置和方法。 在通过相位延迟（TΦ）调整的发送时间（tT）和接收窗口时间（twindow）之间测量信号行进时间。 相位延迟（TΦ）被确定为接收时间（tR）和接收窗口时间（twindow）之间的差。 接收时间（tR）可以基于在接收窗口时间（twindow）处的接收信号的幅度或者当接收信号与正负轴交叉时确定。 在同步系统中，单向时间（OWT）或往返时间（RTT）可以用于估计。 在异步系统中，RTT用于估计。

    Simultaneous signal receiver with interspersed frequency allocation
    29.
    发明授权
    Simultaneous signal receiver with interspersed frequency allocation 有权
    具有散布频率分配的同时信号接收机

    公开(公告)号：US08874063B2

    公开(公告)日：2014-10-28

    申请号：US13791048

    申请日：2013-03-08

    Applicant: QUALCOMM Incorporated

    Inventor： Jin-Su Ko ,  Hong Sun Kim ,  Liang Zhao ,  Cheng-Han Wang ,  Dominic Gerard Farmer

    IPC: H04B1/26 ,  H04B1/16

    CPC classification number: H04B1/16 ,  H04B1/005 ,  H04B1/0064 ,  H04B1/0075

    Abstract: Methods and circuits can down convert at least a first RF signal on a first path in a first frequency band to provide a first IF signal. A second RF signal on second path in a second frequency band can be down converted to provide a second IF signal. The first IF signal and the second IF signal are interspersed in the frequency domain, and the first frequency band is different from the second frequency band. A combiner can combine at least part of the first IF signal and the second IF signal to provide a combined signal on an output signal path for reception by a digital processing circuit. The first IF signal or second IF signal can be a Zero IF (ZIF), very low IF (VLIF), or Low IF (LIF) signal.

    Abstract translation: 方法和电路可以在第一频带中的第一路径上的至少第一RF信号下变频以提供第一IF信号。 在第二频带中的第二路径上的第二RF信号可被下变频以提供第二IF信号。 第一IF信号和第二IF信号分散在频域中，并且第一频带不同于第二频带。 组合器可以组合第一IF信号和第二IF信号的至少一部分，以在输出信号路径上提供组合信号以供数字处理电路接收。 第一IF信号或第二IF信号可以是零中频（ZIF），极低IF（VLIF）或低IF（LIF）信号。

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