公开(公告)号：US20140004800A1

公开(公告)日：2014-01-02

申请号：US13784046

申请日：2013-03-04

Applicant: QUALCOMM INCORPORATED

Inventor： Jie WU ,  Daniel Fred FILIPOVIC ,  Emilija Milorad SIMIC ,  Vishal Agarwal

IPC: H04W56/00

CPC classification number: H04W56/00 ,  G01S19/235 ,  H03L1/022

Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device. The trigger condition can include first use or power-on, charging, presence in an outdoor environment, variation in operating temperature, pre-specified time, and/or user input pertaining to the mobile device.

Abstract translation: 用于移动设备中晶体振荡器（XO）的温度校准的系统和方法。 确定XO的温度校准状态，并检测与XO的温度校准相关的触发条件。 如果XO的温度校准状态未被完全温度校准，或者如果XO尚未被温度校准，则基于条件由XO管理器启动温度校准会话，其中接收器被配置为接收 基于接收到的信号，在后台模式下执行XO的信号和温度校准。 基于条件的触发确保在移动设备上启动任何基于位置或全球导航卫星系统（GNSS）的应用程序之前对XO进行温度校准。 触发条件可以包括首先使用或上电，充电，室外环境的存在，工作温度的变化，预先指定的时间和/或与移动设备有关的用户输入。

公开(公告)号：US20210014802A1

公开(公告)日：2021-01-14

申请号：US16938750

申请日：2020-07-24

Applicant: QUALCOMM Incorporated

Inventor： Jie WU ,  Daniel Fred FILIPOVIC ,  Emilija Milorad SIMIC ,  Vishal AGARWAL

IPC: H04W56/00 ,  G01S19/23 ,  H03L1/02

Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device. The trigger condition can include first use or power-on, charging, presence in an outdoor environment, variation in operating temperature, pre-specified time, and/or user input pertaining to the mobile device.

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。

公开(公告)号：US20180160381A1

公开(公告)日：2018-06-07

申请号：US15881685

申请日：2018-01-26

Applicant: QUALCOMM Incorporated

Inventor： Jie WU ,  Daniel Fred FILIPOVIC ,  Emilija Milorad SIMIC ,  Vishal AGARWAL

IPC: H04W56/00 ,  G01S19/23 ,  H03L1/02

CPC classification number: H04W56/00 ,  G01S19/235 ,  H03L1/022

Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device. The trigger condition can include first use or power-on, charging, presence in an outdoor environment, variation in operating temperature, pre-specified time, and/or user input pertaining to the mobile device.

公开(公告)号：US20160088634A1

公开(公告)日：2016-03-24

申请号：US14494945

申请日：2014-09-24

Applicant: QUALCOMM Incorporated

Inventor： Jibing WANG ,  Emilija Milorad SIMIC

IPC: H04W72/08 ,  H04W28/02 ,  G01S19/21

CPC classification number: H04W28/0236 ,  G01S19/21 ,  H04B1/3805 ,  H04W28/10 ,  H04W72/12

Abstract: Techniques are disclosed for managing wireless transmission duty cycle on a mobile device to mitigate interference during reception of one or more satellite-based positioning signals and transmission of one or more wireless signals, involving (1) determining a first transmission duty cycle, the first transmission duty cycle reflecting a proportion of a time duration occupied by transmission of the one or more wireless signals and (2) delaying transmission of a first wireless packet or transmitting at least one portion of the first wireless packet via the one or more wireless signals, based on a comparison of the first transmission duty cycle and a duty cycle threshold.

Abstract translation: 公开了用于管理移动设备上的无线传输占空比以减轻在接收一个或多个基于卫星的定位信号和传输一个或多个无线信号期间的干扰的技术，其涉及（1）确定第一传输占空比，第一传输 反映一个或多个无线信号的发送占用的持续时间的一部分的占空比，以及（2）延迟第一无线分组的传输或经由一个或多个无线信号来发射第一无线分组的至少一部分 在比较第一传输占空比与占空比阈值之间。

公开(公告)号：US20190261293A1

公开(公告)日：2019-08-22

申请号：US16402203

申请日：2019-05-02

Applicant: QUALCOMM Incorporated

Inventor： Jie WU ,  Daniel Fred FILIPOVIC ,  Emilija Milorad SIMIC ,  Vishal AGARWAL

IPC: H04W56/00 ,  G01S19/23 ,  H03L1/02

Abstract: System and method for temperature-calibration of a crystal oscillator (XO) in a mobile device. A temperature-calibration status of the XO is determined and a trigger condition related to temperature-calibration of the XO is detected. If the temperature-calibration status of the XO is not fully temperature-calibrated or if the XO has not been previously temperature-calibrated, a temperature-calibration session is initiated by an XO manager based on the condition, wherein a receiver is configured to receive signals and temperature-calibration of the XO is performed in a background mode based on the received signals. The condition based triggering ensures that the XO is temperature-calibrated prior to launch of any position based or global navigation satellite systems (GNSS) based applications on the mobile device. The trigger condition can include first use or power-on, charging, presence in an outdoor environment, variation in operating temperature, pre-specified time, and/or user input pertaining to the mobile device.

公开(公告)号：US20140266874A1

公开(公告)日：2014-09-18

申请号：US13801631

申请日：2013-03-13

Applicant: QUALCOMM INCORPORATED

Inventor： Duong Anh Hoang ,  Emilija Milorad SIMIC ,  Timothy Paul PALS

IPC: G01S19/42

CPC classification number: G01S19/42 ,  G01S19/21 ,  G01S19/30

Abstract: Methods and systems for evaluating Global Navigation Satellite System (GNSS) signals are provided. Each of a first GNSS signal received by a GNSS receiver and a second GNSS signal received by the GNSS receiver is accessed. The second GNSS signal can have temporal fluctuations weaker than temporal fluctuations in the first GNSS signal. A delay between a sequence in the first GNSS signal and a corresponding sequence signal in the second GNSS signal is estimated and compared to a threshold. Upon determining that the delay exceeds the threshold, a location is estimated using both the first GNSS signal and the second GNSS signal.

Abstract translation: 提供了评估全球导航卫星系统（GNSS）信号的方法和系统。 由GNSS接收器接收的第一GNSS信号和由GNSS接收器接收的第二GNSS信号中的每一个被访问。 第二GNSS信号可以具有比第一GNSS信号中的时间波动弱的时间波动。 估计第一GNSS信号中的序列与第二GNSS信号中的对应序列信号之间的延迟并将其与阈值进行比较。 在确定延迟超过阈值时，使用第一GNSS信号和第二GNSS信号来估计位置。

公开(公告)号：US20140004887A1

公开(公告)日：2014-01-02

申请号：US13774342

申请日：2013-02-22

Applicant: QUALCOMM INCORPORATED

Inventor： Dominic Gerard FARMER ,  Vishal AGARWAL ,  Emilija Milorad SIMIC ,  Daniel Fred FILIPOVIC ,  Sasidhar MOWA

IPC: H03L1/02 ,  G01S19/23

CPC classification number: H04W56/00 ,  G01S19/235 ,  H03L1/022

Abstract: Systems and methods for temperature-calibration of an uncompensated XO in a mobile device during mobile device operation. The XO is temperature-calibrated based on assistance from wireless signals, such as from satellite source, and optionally from terrestrial sources such as WWAN, CDMA, etc. Based on one or more received wireless signals received at a receiver, corresponding frequency estimates of the XO are obtained and correlated with corresponding operating temperatures in a processor. Based on one or more samples of frequency estimates and associated temperatures, the XO is temperature-calibrated in the processor wherein a frequency-temperature (FT) model is formulated for the XO. The frequency of the temperature-calibrated XO can be determined from the FT model at any given temperature.

Abstract translation: 用于移动设备操作期间移动设备中未补偿的XO的温度校准的系统和方法。 基于来自无线信号（例如来自卫星源）和可选地从诸如WWAN，CDMA等地面源的无线信号进行温度校准。基于在接收机处接收到的一个或多个接收到的无线信号，相应的频率估计 获得XO并与处理器中的对应操作温度相关联。 基于频率估计和相关温度的一个或多个样本，XO在处理器中被温度校准，其中为XO制定了频率 - 温度（FT）模型。 温度校准XO的频率可以在任何给定温度下从FT模型确定。