知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

45 records (took 0.018 seconds)

    Radio control based on operational performance feedback
    2.
    发明授权
    Radio control based on operational performance feedback 有权

    公开(公告)号：US11765605B2

    公开(公告)日：2023-09-19

    申请号：US17689639

    申请日：2022-03-08

    Applicant: QUALCOMM Incorporated

    Inventor： Jordan Cookman ,  Jie Wu ,  David Loweth Winslow ,  Daniel Filipovic ,  Liang Zhao

    IPC: H04B1/04 ,  H03H7/38 ,  H04W24/02 ,  H04W4/029

    CPC classification number: H04W24/02 ,  H04W4/029

    Abstract: A wireless communication system includes: a first sub-system including a first radio and a second radio, each including a transceiver or a receiver; and a second sub-system coupled to the first sub-system and including: a first antenna configured to convey signals; a first tuner coupled to the first antenna; and a controller coupled to the first tuner, the controller being configured to cause the first tuner to adjust a characteristic of the first tuner; where the controller and/or the first tuner is configured to provide, to the first sub-system, an indication of an effect on operational performance of a portion of the second sub-system coupled to the second radio based on operation of the first tuner or the first antenna, or a combination thereof; where the first sub-system is configured to modify operation of the second radio based on the indication of the effect on operational performance.

    Orthogonality and encapsulation for positioning and navigation signals
    4.
    发明授权
    Orthogonality and encapsulation for positioning and navigation signals 有权

    公开(公告)号：US10757713B2

    公开(公告)日：2020-08-25

    申请号：US16046253

    申请日：2018-07-26

    Applicant: QUALCOMM Incorporated

    Inventor： Guttorm Ringstad Opshaug ,  Rayman Wai Pon ,  Jie Wu ,  Naga Bhushan ,  Sven Fischer ,  Stephen William Edge

    IPC: H04W72/08 ,  H04L5/00 ,  H04W72/04 ,  H04W4/02 ,  H04W88/08

    Abstract: Mobile devices often use orthogonal frequency division multiplexing (OFDM) to calculate position information of mobile devices within the network. However, physical distance between the mobile device and a signal source for positioning and other environmental factors can influence the signal strength of received signals. Received signals at the mobile device that are stronger may drown out the weaker signals, particularly when two signal sources occupy the same symbol. In traditional OFDM, a signal source transmits the same symbol for each positioning occasion, so a weaker signal may never be detected over a stronger signal, reducing the accuracy of the positioning calculations. Described herein are systems and methods for using a pattern to vary the designated symbol for each signal source in a wireless network so that a weaker signal from a signal source may be detected on at least some of the positioning occasions.

    Low power positioning techniques for mobile devices
    6.
    发明授权
    Low power positioning techniques for mobile devices 有权

    公开(公告)号：US09733361B2

    公开(公告)日：2017-08-15

    申请号：US14480396

    申请日：2014-09-08

    Applicant: QUALCOMM Incorporated

    Inventor： Dominic Gerard Farmer ,  William James Morrison ,  Jie Wu ,  Krishnaranjan Rao ,  Tong Lin

    IPC: G01S19/34 ,  G01S19/06 ,  G01S19/24

    CPC classification number: G01S19/34 ,  G01S19/06 ,  G01S19/24

    Abstract: Techniques for managing power consumption of a Global Navigation Satellite System (GNSS) receiver of a mobile device are provided. These techniques include a method that includes deriving a GNSS search window for the GNSS receiver based on a position uncertainty (PUNC) and a time uncertainty (TUNC), selecting a GNSS search mode based on the GNSS search window and resources available for searching for signals from GNSS satellite vehicles (SVs), wherein an estimated power consumption associated with execution of a GNSS search associated with the GNSS search mode does not exceed a power consumption limit specified for the GNSS receiver conducting the GNSS search using the GNSS search mode, and estimating a position of the mobile device.

    Background crystal oscillator calibration
    9.
    发明授权
    Background crystal oscillator calibration 有权

    公开(公告)号：US10772053B2

    公开(公告)日：2020-09-08

    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: 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.

Patent Agency Ranking