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    Antenna switching for dual radio devices
    21.
    发明授权
    Antenna switching for dual radio devices 有权

    公开(公告)号：US09712224B2

    公开(公告)日：2017-07-18

    申请号：US14015298

    申请日：2013-08-30

    Applicant: QUALCOMM Incorporated

    Inventor： Hongbo Yan ,  Francis M. Ngai ,  Jafar Mohseni ,  Daniel Fred Filipovic

    IPC: H04B1/06 ,  H04B7/00 ,  H04B7/08 ,  H04B7/06

    CPC classification number: H04B7/0868 ,  H04B7/0602 ,  H04B7/0817

    Abstract: Systems and methods for antenna selection in a wireless terminal with two radios are provided. Signals received using first and second antennas are demodulated by first and second modems according to first and second protocols. A receive path between the second antenna and the second modem can be controlled to receive signals according to the first protocol. A performance measure of demodulating, according to the first protocol, a signal received using the second antenna is determined. The performance measure may be determined using a mirror module in the second modem or using a search module in the first modem. The wireless terminal switches antennas so that the first modem demodulates a signal received using the second antenna, if the performance measure for using the second antenna is such that the switch would improve performance of the first modem.

    Antenna selection and tuning
    23.
    发明授权
    Antenna selection and tuning 有权

    公开(公告)号：US09634697B2

    公开(公告)日：2017-04-25

    申请号：US14848569

    申请日：2015-09-09

    Applicant: QUALCOMM Incorporated

    Inventor： Dineshbabu Natesan ,  Daniel Fred Filipovic ,  Ning He ,  Yi-Chyun Chiou ,  Tarandeep Virk

    IPC: H04B1/04 ,  H04B1/40

    CPC classification number: H04B1/0458 ,  H01Q1/245 ,  H01Q3/24 ,  H01Q21/28 ,  H04B1/40

    Abstract: A systems, methods and apparatus including a plurality of antennas are provided. The antenna system includes a first antenna, a second antenna, and a measurement device. The measurement device is configured to measure at least a first complex value indicative of an impedance matching of the first antenna and a second complex value indicative of an impedance matching of the second antenna. The antenna system includes an antenna selection controller configured to select one of the first antenna and the second antenna. The antenna selection controller making the selection based on the measurement of the first complex value of the first antenna and the measurement of the second complex value of the second antenna.

    SINGLE ANTENNA SHARING FOR MULTIPLE WIRELESS CONNECTIONS
    25.
    发明申请
    SINGLE ANTENNA SHARING FOR MULTIPLE WIRELESS CONNECTIONS 有权
    单天线共享多个无线连接

    公开(公告)号：US20150264743A1

    公开(公告)日：2015-09-17

    申请号：US14215128

    申请日：2014-03-17

    Applicant: QUALCOMM Incorporated

    Inventor： Hongbo Yan ,  Francis Ming-Meng Ngai ,  Daniel Fred Filipovic ,  Ning He

    IPC: H04W88/06

    CPC classification number: H04B7/0814 ,  H04B1/406 ,  H04B7/0608 ,  H04B7/0805 ,  H04W88/06

    Abstract: A wireless device includes: a first radio and first transceiver configured to transmit and receive according to a first radio access technology; a second radio and second transceiver configured to transmit and receive according to a second radio access technology; a first antenna and a second antenna connected to the first radio and the second radio; a switch; and a control unit configured to control the switch to configure connections of the first and second antennas to the first and second radios. The control unit is configured to control the switch to disconnect the second radio from the second antenna in response to a receiving, by the second radio through the second antenna, a signal that is below a predetermined threshold, and to connect the second radio to the first antenna during a wakeup period of the second radio.

    Abstract translation: 无线设备包括：第一无线电和第一收发机，被配置为根据第一无线接入技术进行发送和接收; 第二无线电和第二收发机，被配置为根据第二无线电接入技术进行发射和接收; 连接到第一无线电和第二无线电的第一天线和第二天线; 开关 以及控制单元，被配置为控制所述开关以配置所述第一和第二天线到所述第一和第二无线电的连接。 控制单元被配置为响应于通过第二天线的第二无线电接收低于预定阈值的信号并且将第二无线电与第二无线电连接到第二无线电 在第二无线电的唤醒期间的第一天线。

    Methods for addressing aging of XO crystals
    26.
    发明授权
    Methods for addressing aging of XO crystals 有权
    解决XO晶体老化的方法

    公开(公告)号：US08994466B2

    公开(公告)日：2015-03-31

    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: H03B5/32 ,  H03L7/00 ,  H03L1/00 ,  H03L1/02

    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。

    ANTENNA SWITCHING DEVICES, METHODS, AND SYSTEMS FOR SIMULTANEOUS COMMUNICATION
    27.
    发明申请
    ANTENNA SWITCHING DEVICES, METHODS, AND SYSTEMS FOR SIMULTANEOUS COMMUNICATION 有权
    用于同时通信的天线切换设备，方法和系统

    公开(公告)号：US20130308608A1

    公开(公告)日：2013-11-21

    申请号：US13838248

    申请日：2013-03-15

    Applicant: QUALCOMM INCORPORATED

    Inventor： Jun HU ,  Rashid Ahmed Akbar Attar ,  Gregory Robert Lie ,  Daniel Fred Filipovic ,  Hongbo Yan ,  Ning He

    IPC: H04W36/30

    CPC classification number: H01Q3/24 ,  H04B1/44 ,  H04B7/0404 ,  H04B7/0602 ,  H04B7/0608 ,  H04B7/0802 ,  H04B7/0814 ,  H04W24/02 ,  H04W36/14 ,  H04W36/30 ,  H04W72/085 ,  H04W76/18 ,  H04W88/06

    Abstract: This disclosure provides systems, methods, and apparatus for antenna switching for simultaneous communication. One apparatus embodiment includes a plurality of antennas including a first antenna, a second antenna, and a third antenna. The wireless communication apparatus further includes a plurality of receive circuits including a first receive circuit, at least two of the plurality of receive circuits each configured to simultaneously receive, with respect to the other, wireless communications from a different one of at least two networks relating to different radio access technologies. The wireless communication apparatus further includes a controller configured to selectively switch the first receive circuit from receiving wireless communications via the first antenna to receive wireless communications via the second antenna based on one or more performance characteristics of at least one of the first antenna and the second antenna. Other aspects, embodiments, and features are also claimed and described.

    Abstract translation: 本公开提供用于同时通信的天线切换的系统，方法和装置。 一个装置实施例包括包括第一天线，第二天线和第三天线的多个天线。 所述无线通信装置还包括多个接收电路，包括第一接收电路，所述多个接收电路中的至少两个接收电路中的至少两个接收电路被配置为从相关的至少两个网络中的不同的一个网络中相对于另一个同时接收无线通信 到不同的无线接入技术。 无线通信装置还包括控制器，其被配置为基于第一天线和第二天线中的至少一个的一个或多个性能特性，经由第一天线选择性地切换第一接收电路接收无线通信，以经由第二天线接收无线通信 天线。 还要求和描述其它方面，实施例和特征。

    Background oscillator calibration
    28.
    发明授权
    Background oscillator calibration 有权

    公开(公告)号：US11800464B2

    公开(公告)日：2023-10-24

    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

    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.

    Background crystal oscillator calibration
    29.
    发明授权
    Background crystal oscillator calibration 有权

    公开(公告)号：US10397887B2

    公开(公告)日：2019-08-27

    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: H04B17/00 ,  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.

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