公开(公告)号：US10469217B2

公开(公告)日：2019-11-05

申请号：US16053112

申请日：2018-08-02

Applicant: QUALCOMM Incorporated

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

IPC: G01S5/10 ,  H04L5/00 ,  H04W72/04 ,  G01S19/13 ,  H04W16/14

Abstract: Many mobile devices and mobile networks utilize orthogonal frequency division multiplexing (OFDM) to calculate position information of mobile devices within the network. However, the Doppler Effect and other noise or obstructions can cause OFDM signals to become entangled, particularly when the mobile device is moving, making the calculated position information inaccurate. Described herein are systems and methods for disentangling the OFDM signals by calculating a symbol length for the signals that is longer than the minimum symbol length, which is used in traditional OFDM. Selecting a longer symbol length reduces the Doppler Effect and other noise on the signals, making positioning calculations more accurate.

公开(公告)号：US09907035B2

公开(公告)日：2018-02-27

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: H04B17/00 ,  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：US20150123844A1

公开(公告)日：2015-05-07

申请号：US14503185

申请日：2014-09-30

Applicant: QUALCOMM Incorporated

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

IPC: G01S19/13 ,  G06F17/30 ,  G01P15/00

CPC classification number: G01S19/256 ,  G01P15/00 ,  G01S19/235 ,  H04W56/0035 ,  H04W56/005 ,  H04W56/0055 ,  H04W56/0065

Abstract: Disclosed are methods, systems and/or devices to calibrate a network time by acquisition of satellite positioning system (SPS) signals and different instances of time, and time-tagging SPS times according to the network time. In particular, the network time may be calibrated based, at least in part, on a first difference between first and second SPS times obtained at two SPS position fixes and a second difference between corresponding first and second time stamps.

Abstract translation: 公开了通过采集卫星定位系统（SPS）信号和不同的时间实例来校准网络时间的方法，系统和/或设备，以及根据网络时间的时间标签SPS时间。 特别地，可以至少部分地基于在两个SPS位置固定处获得的第一和第二SPS时间之间的第一差异和相应的第一和第二时间戳之间的第二差异来校准网络时间。

公开(公告)号：US08730100B2

公开(公告)日：2014-05-20

申请号：US13750851

申请日：2013-01-25

Applicant: QUALCOMM Incorporated

Inventor： Marc Anthony Ische ,  Ahmad Hatami ,  Ardalan Heshmati ,  Zoltan F. Biacs ,  Douglas N. Rowitch ,  Dominic Farmer ,  Srigouri Kamarsu ,  Jie Wu

IPC: G01S19/46 ,  G01S19/42 ,  G01S19/45

CPC classification number: G01S19/46 ,  G01S19/07 ,  G01S19/48

Abstract: The subject matter disclosed herein relates to a method, an apparatus, and an article related to determining a location of a mobile device using more than one location determining technology, including, but not limited to, obtaining background position information based at least in part on said more than one location determining technology, and updating said background position information based at least in part on said more than one location determining technology.

Abstract translation: 本文公开的主题涉及与使用多于一个位置确定技术来确定移动设备的位置有关的方法，装置和制品，包括但不限于至少部分地至少部分地获得背景位置信息 所述多个位置确定技术，并且至少部分地基于所述多个位置确定技术来更新所述背景位置信息。

公开(公告)号：US20130285856A1

公开(公告)日：2013-10-31

申请号：US13674765

申请日：2012-11-12

Applicant: QUALCOMM INCORPORATED

Inventor： Guttorm R. Opshaug ,  Jie Wu

IPC: G01S5/14

CPC classification number: G01S5/14 ,  G01S5/0036 ,  G01S5/02 ,  G01S5/0221 ,  G01S5/10 ,  H04W64/00

Abstract: Arrangements are detailed herein for determining a position and/or uncertainty of position of a mobile device. A plurality of positioning reference signals (PRSs) may be received by a mobile device. The plurality of PRSs may be transmitted at different times, separated by a predefined time interval, by multiple eNBs of a mobile network. Time of arrival values in relation to a received PRS that is used as a reference PRS may be determined. The time of arrival values for at least the subset of the received plurality of PRSs may be projected to the occasion of the reference PRS using the predefined time interval to create a set of projected time of arrival values.

Abstract translation: 这里详细说明了用于确定移动设备的位置和/或位置的不确定性的安排。 多个定位参考信号（PRS）可由移动设备接收。 可以由移动网络的多个eNB在不同的时间（以预定的时间间隔隔开）来传送多个PRS。 可以确定与用作参考PRS的接收PRS有关的到达时间值。 可以使用预定义的时间间隔将接收到的多个PRS的至少子集的到达时间值投影到参考PRS的场合，以创建一组预计的到达时间值的集合。