公开(公告)号：CA2926537A1

公开(公告)日：2015-05-07

申请号：CA2926537

申请日：2014-11-03

Applicant: QUALCOMM INC

Inventor： FARMER DOMINIC GERARD ,  WU JIE ,  MORRISON WILLIAM JAMES ,  LIN TONG ,  RAO KRISHNARANJAN S

IPC: H04W56/00

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.

公开(公告)号：IN44MUN2015A

公开(公告)日：2015-10-16

申请号：IN44MUN2015

申请日：2015-01-07

Applicant: QUALCOMM INC

Inventor： LIN TONG

IPC: G01S19/33

Abstract: Techniques are provided to quickly estimate a temporal shift of a GPS signal based on an analysis of a GLONASS signal. The shift can be a result of applied leap second adjustments affecting GLONASS signals but not GPS signals. By identifying this shift GPS and GLONASS signals can be considered together in order to estimate locations. The temporal shift can be determined e.g. by estimating a separation between a GPS signal frame feature (e.g. frame onset) and a GLONASS signal frame feature (e.g. frame onset) or identifying coinciding frame features (e.g. a GPS signal subframe coinciding with a GLONASS signal string number). The techniques allow the temporal shift to be estimated based on an analysis of just a portion of the GPS signal and GLONASS signal frames such that a speed of location estimations can be improved.

公开(公告)号：WO2015066652A3

公开(公告)日：2015-08-20

申请号：PCT/US2014063755

申请日：2014-11-03

Applicant: QUALCOMM INC

Inventor： FARMER DOMINIC GERARD ,  WU JIE ,  MORRISON WILLIAM JAMES ,  LIN TONG ,  RAO KRISHNARANJAN S

IPC: H04W56/00

CPC classification number: G01S19/13 ,  G01P15/00 ,  G06F17/30289 ,  H04W56/0035

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: 公开了通过获取卫星定位系统（SPS）信号和不同的时间实例来校准网络时间以及根据网络时间对SPS时间进行时间标记的方法，系统和/或设备。 具体而言，网络时间可以至少部分地基于在两个SPS位置定位处获得的第一和第二SPS时间之间的第一差值以及相应的第一和第二时间戳之间的第二差值来校准。

公开(公告)号：WO2015069510A3

公开(公告)日：2015-06-25

申请号：PCT/US2014062809

申请日：2014-10-29

Applicant: QUALCOMM INC

Inventor： FARMER DOMINIC GERARD ,  MORRISON WILLIAM JAMES ,  WU JIE ,  RAO KRISHNARANJAN ,  LIN TONG

IPC: G01S19/34

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.

Abstract translation: 提供了用于管理移动设备的全球导航卫星系统（GNSS）接收机的功耗的技术。 这些技术包括一种方法，该方法包括基于位置不确定性（PUNC）和时间不确定性（TUNC）导出GNSS接收机的GNSS搜索窗口，基于GNSS搜索窗口和可用于搜索信号的资源来选择GNSS搜索模式 从GNSS卫星车辆（SV）接收与执行与GNSS搜索模式相关联的GNSS搜索相关联的估计功耗不超过为使用GNSS搜索模式进行GNSS搜索的GNSS接收器指定的功耗限制，以及估计 移动设备的位置。