公开(公告)号：US09395445B2

公开(公告)日：2016-07-19

申请号：US13962876

申请日：2013-08-08

Applicant: MaxLinear, Inc.

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Anand K. Anandakumar ,  Curtis Ling

IPC: G01S19/24 ,  G01S19/09 ,  G01S19/34

CPC classification number: G01S19/34

Abstract: A GNSS system operates intermittently and has adaptive activity and sleep time in order to reduce power consumption. The GNSS system provides an enhanced estimate of its position in the absence of GNSS signals of sufficient strength. The user's activity and behavior is modeled and used to improve performance, response time, and power consumption of the GNSS system. The user model is based, in part, on the received GNSS signals, a history of the user's positions, velocity, time, and inputs from other sensors disposed in the GNSS system, as well as data related to the network. During each activity time, the GNSS receiver performs either tracking, or acquisition followed by tracking The GNSS receiver supports both normal acquisition as well as low-power acquisition.

Abstract translation: GNSS系统间歇运行，具有自适应活动和休眠时间，以降低功耗。 在没有足够强度的GNSS信号的情况下，GNSS系统提供对其位置的增强估计。 用户的活动和行为被建模并用于提高GNSS系统的性能，响应时间和功耗。 用户模型部分地基于所接收的GNSS信号，用户位置的历史，速度，时间以及设置在GNSS系统中的其他传感器的输入以及与网络有关的数据。 在每个活动时间内，GNSS接收机执行跟踪或采集跟踪跟踪。GNSS接收机支持正常采集以及低功耗采集。

公开(公告)号：US20160025861A1

公开(公告)日：2016-01-28

申请号：US14871572

申请日：2015-09-30

Applicant: MaxLinear, Inc.

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Nishant Kumar

IPC: G01S19/26 ,  G01S19/24 ,  G01S19/34

CPC classification number: G01S19/26 ,  G01S19/05 ,  G01S19/24 ,  G01S19/34

Abstract: A system for indoor global navigation satellite system detection utilizing low Earth orbit satellite signals is disclosed and may include in a mobile communication device comprising a low Earth orbit (LEO) satellite signal receiver path and a medium Earth orbit (MEO) satellite signal receiver path: receiving a LEO RF satellite signal utilizing said LEO satellite signal receiver path, measuring a received signal strength indicator (RSSI) for the received LEO signal, calculating an expected received MEO signal strength based on the measured RSSI, and configuring the wireless receiver to determine its position using LEO signals or MEO signals based on the calculated MEO signal strength and measured RSSI. The MEO path may be powered down when the calculated expected signal strength is below a threshold level for positioning purposes. The MEO path may be powered up when the calculated expected signal strength increases above a threshold level for positioning purposes.

Abstract translation: 公开了一种利用低地球轨道卫星信号进行室内全球导航卫星系统检测的系统，并且可以包括在包括低地球轨道（LEO）卫星信号接收机路径和中等地球轨道（MEO）卫星信号接收机路径的移动通信设备中： 使用所述LEO卫星信号接收机路径接收LEO RF卫星信号，测量接收到的LEO信号的接收信号强度指示符（RSSI），基于所测量的RSSI计算预期接收到的MEO信号强度，以及配置无线接收机以确定其 基于计算的MEO信号强度和测量的RSSI，使用LEO信号或MEO信号的位置。 当计算的预期信号强度低于用于定位的阈值水平时，MEO路径可以被关闭。 当计算的预期信号强度增加到高于阈值水平以用于定位目的时，MEO路径可以被加电。

公开(公告)号：US09179437B2

公开(公告)日：2015-11-03

申请号：US14589781

申请日：2015-01-05

Applicant: Maxlinear, Inc.

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Nishant Kumar

IPC: H04W4/00 ,  G01S19/38 ,  H04W64/00 ,  H04W4/02 ,  G01S19/42 ,  G01S19/13 ,  H04B7/185 ,  H04W84/04

CPC classification number: H04B7/18554 ,  G01S19/13 ,  G01S19/425 ,  H04W4/021 ,  H04W64/003 ,  H04W84/045

Abstract: Methods and systems for femtocell positioning using low Earth orbit (LEO) satellite signals may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path when medium Earth orbit (MEO) signals are attenuated below a threshold needed for positioning purposes by the MEO receiver path. A position of said wireless communication device (WCD) may be measured based on the received LEO RF satellite signals. The measured position of the WCD may be compared to a threshold radius defined by a stored initial position. Wireless communication services to the other WCDs may be enabled when the measured position is within the threshold radius. Reentry of the stored initial position may be requested when the measured position is outside of the threshold radius. The WCD may be disabled when the measured position of the WCD falls outside of the threshold radius more than a predetermined number of times.

Abstract translation: 使用低地球轨道（LEO）卫星信号的毫微微小区定位的方法和系统可以包括当中等地球轨道（MEO）信号衰减到低于由MEO接收机定位所需的阈值时利用LEO卫星信号接收机路径接收LEO RF卫星信号 路径。 可以基于接收的LEO RF卫星信号来测量所述无线通信设备（WCD）的位置。 WCD的测量位置可以与由存储的初始位置定义的阈值半径进行比较。 当测量位置在阈值半径内时，可以启用与其他WCD的无线通信服务。 当测量位置在阈值半径之外时，可以请求存储的初始位置的再入。 当WCD的测量位置超出阈值半径超过预定次数时，WCD可能被禁用。

公开(公告)号：US20150276935A1

公开(公告)日：2015-10-01

申请号：US14739659

申请日：2015-06-15

Applicant: Maxlinear, Inc.

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Nishant Kumar ,  Anand Anandakumar

IPC: G01S19/46 ,  H04W64/00 ,  H04B7/185

CPC classification number: G01S19/46 ,  H04B7/1853 ,  H04B7/18547 ,  H04W64/006

Abstract: Methods and systems for repurposing of a global navigation satellite system receiver for receiving low-earth orbit (LEO) communication satellite timing signals may comprise receiving a medium Earth orbit (MEO) satellite signal and/or a LEO signal in a receiver of the communication device. The MEO or LEO signal may be down-converted, and a position of the communication device may be calculated utilizing the down-converted signal. The signal may be down-converted utilizing a local oscillator signal generated by a phase locked loop (PLL), which may be delta-sigma modulated via a fractional-N divider. A clock signal may be communicated to the PLL utilizing a temperature-compensated crystal oscillator. The signal may be down-converted to an intermediate frequency or down-converted directly to baseband frequencies. The signal may be processed utilizing surface acoustic wave (SAW) filters. In-phase and quadrature signals may be processed in the RF path utilizing a two-stage polyphase filter.

Abstract translation: 用于重新利用用于接收低地球轨道（LEO）通信卫星定时信号的全球导航卫星系统接收机的方法和系统可以包括在通信设备的接收机中接收介质地球轨道（MEO）卫星信号和/或LEO信号 。 可以对MEO或LEO信号进行下变频，并且可以利用下变频信号来计算通信装置的位置。 信号可以利用由锁相环（PLL）产生的本地振荡器信号进行下变频，锁相环（PLL）可以经由分数N分频器进行Δ-Σ调制。 可以使用温度补偿晶体振荡器将时钟信号传送到PLL。 信号可以被下变频到中频或直接下变频到基带频率。 可以使用表面声波（SAW）滤波器来处理信号。 可以使用两级多相滤波器在RF路径中处理同相和正交信号。

公开(公告)号：US20150126183A1

公开(公告)日：2015-05-07

申请号：US14589781

申请日：2015-01-05

Applicant: Maxlinear, Inc.

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Nishant Kumar

IPC: H04W64/00 ,  G01S19/13 ,  H04B7/185

CPC classification number: H04B7/18554 ,  G01S19/13 ,  G01S19/425 ,  H04W4/021 ,  H04W64/003 ,  H04W84/045

Abstract: Methods and systems for femtocell positioning using low Earth orbit (LEO) satellite signals may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path when medium Earth orbit (MEO) signals are attenuated below a threshold needed for positioning purposes by the MEO receiver path. A position of said wireless communication device (WCD) may be measured based on the received LEO RF satellite signals. The measured position of the WCD may be compared to a threshold radius defined by a stored initial position. Wireless communication services to the other WCDs may be enabled when the measured position is within the threshold radius. Reentry of the stored initial position may be requested when the measured position is outside of the threshold radius. The WCD may be disabled when the measured position of the WCD falls outside of the threshold radius more than a predetermined number of times.

Abstract translation: 使用低地球轨道（LEO）卫星信号的毫微微小区定位的方法和系统可以包括当中等地球轨道（MEO）信号衰减到低于由MEO接收机定位所需的阈值时利用LEO卫星信号接收机路径接收LEO RF卫星信号 路径。 可以基于接收的LEO RF卫星信号来测量所述无线通信设备（WCD）的位置。 WCD的测量位置可以与由存储的初始位置定义的阈值半径进行比较。 当测量位置在阈值半径内时，可以启用与其他WCD的无线通信服务。 当测量位置在阈值半径之外时，可以请求存储的初始位置的再入。 当WCD的测量位置超出阈值半径超过预定次数时，WCD可能被禁用。