公开(公告)号：US20180120443A1

公开(公告)日：2018-05-03

申请号：US15338222

申请日：2016-10-28

Applicant: QUALCOMM Incorporated

Inventor： Prabhu Kandasamy ,  William Morrison ,  Harisrinivas Chandrasekar ,  Manish Kushwaha

IPC: G01S19/23 ,  G01S19/47 ,  G01S19/51

CPC classification number: G01S19/235 ,  G01S19/252 ,  G01S19/256 ,  G01S19/47 ,  G01S19/51

Abstract: A mobile device is capable of accurately maintaining a global time based on Satellite Position System (SPS) time decoded from an SPS signal using a clock signal acquired from a wireless communication transmitter, such as a base station or access point. The time uncertainty is reduced or minimized by determining a relative change in position of the mobile device with respect to a base position, e.g., a reference position determined from a previous SPS session. The time uncertainty may be determined based on the relative change in position with respect to the base position by transforming it into time units based on the speed of light. The global time may be updated based on the determined time uncertainty, which may be used in a subsequent SPS session to reduce the search window to acquire SPS satellite signals.

公开(公告)号：US09476716B2

公开(公告)日：2016-10-25

申请号：US14072728

申请日：2013-11-05

Applicant: QUALCOMM Incorporated

Inventor： Guttorm R. Opshaug ,  Manish Kushwaha ,  Wyatt Thomas Riley ,  Zoltan F. Biacs ,  Mayur N. Shah ,  Joseph Czompo

IPC: G01C21/00 ,  G01C21/16 ,  G01S19/26 ,  G01S19/46 ,  G01S19/47 ,  G01S19/48 ,  G01S19/49 ,  G01C21/30 ,  G01S5/02

CPC classification number: G01C21/165 ,  G01C21/30 ,  G01S5/0252 ,  G01S19/26 ,  G01S19/46 ,  G01S19/47 ,  G01S19/48 ,  G01S19/49

Abstract: Methods, apparatuses, and devices for generating one or more harsh or diminished radiofrequency environments relative to a planned route of a mobile device user. In one example, a mobile device user a be routed through a harsh or diminished radiofrequency environment based, at least in part, on a sensor suite of a mobile device and/or based on a user's preferences. Prior to entry into such an environment, various sensors may be activated in a manner that permits position estimation in an absence of SPS based positioning signals and/or TPS based positioning signals.

Abstract translation: 用于生成相对于移动设备用户的计划路线的一个或多个恶劣或降低的射频环境的方法，设备和设备。 在一个示例中，移动设备用户至少部分地基于移动设备的传感器套件和/或基于用户的偏好来通过苛刻或减少的射频环境路由。 在进入这样的环境之前，可以以在不存在基于SPS的定位信号和/或基于TPS的定位信号的情况下允许位置估计的方式激活各种传感器。

公开(公告)号：US20140288873A1

公开(公告)日：2014-09-25

申请号：US14147274

申请日：2014-01-03

Applicant: QUALCOMM Incorporated

Inventor： Joseph Czompo ,  Manish Kushwaha

IPC: G01C19/00

CPC classification number: G01C19/5776 ,  G01P13/00

Abstract: Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for pre-processing inertial sensor measurements for navigation for use in or with a mobile communication device.

Abstract translation: 本文公开的可以全部或部分地利用的示例性方法，装置或制品可以用于促进或支持一种或多种用于预处理用于或用于移动通信的导航的惯性传感器测量的操作或技术 设备。