公开(公告)号：DE602004009452D1

公开(公告)日：2007-11-22

申请号：DE602004009452

申请日：2004-07-23

Applicant: QUALCOMM INC

Inventor： FARMER DOMINIC ,  LEIRER LASZLO

IPC: G01S1/00 ,  G01S5/02 ,  G01S19/25

Abstract: A method and apparatus for setting coarse GPS time in a GPS receiver in a mobile station (MS) that is communicating with a base station and a position determining entity (PDE). The MS requests an assistance message from the PDE that includes a sequence of predicted navigation bits, including a predicted time indicator field, which is then located and decoded. Coarse time is set responsive to the time indicator value. A Pattern Match Algorithm may be performed to provide more precise GPS time. In order to better set coarse time, an expected error in the Time of Week may be determined, by for example using the expected network latency. The system describe herein enables the use of IS-801 protocol by an MS in asynchronous networks by improving the coarse time setting process.

公开(公告)号：AU2003254290A8

公开(公告)日：2004-02-23

申请号：AU2003254290

申请日：2003-08-01

Applicant: QUALCOMM INC

Inventor： FARMER DOMINIC

IPC: G01S19/23 ,  G01S1/00 ,  G01S19/25 ,  G01S5/14

Abstract: A system for maintaining time in a satellite positioning system (SPS) receiver that relies on almanac data to maintain a reasonably accurate time. The approximate time based on almanac data is sufficiently accurate to bound the unknown parameters when a request for position is received. The receiver may automatically update the internal time and/or position. When a time update is required, the approximate time based on almanac data is sufficiently accurate that the receiver need only acquire the code phase from the satellites and can internally determine the code period into the bit and the bit into the week based on the almanac data.

公开(公告)号：WO2004013649A2

公开(公告)日：2004-02-12

申请号：PCT/US0324060

申请日：2003-08-01

Applicant: QUALCOMM INC

Inventor： FARMER DOMINIC

IPC: G01S19/23 ,  G01S1/00 ,  G01S19/25 ,  G01S

CPC classification number: G01S19/23 ,  G01S19/34

Abstract: A system for maintaining time in a satellite positioning system (SPS) receiver that relies on almanac data to maintain a reasonably accurate time. The approximate time based on almanac data is sufficiently accurate to bound the unknown parameters when a request for position is received. The receiver may automatically update the internal time and/or position. When a time update is required, the approximate time based on almanac data is sufficiently accurate that the receiver need only acquire the code phase from the satellites and can internally determine the code period into the bit and the bit into the week based on the almanac data.

Abstract translation: 用于在卫星定位系统（SPS）接收机中保持时间的系统，其依赖历书数据来保持相当准确的时间。 基于年历数据的近似时间足够精确，以便在接收到位置请求时限制未知参数。 接收机可以自动更新内部时间和/或位置。 当需要时间更新时，基于年历数据的近似时间足够精确，使得接收机只需要从卫星获取码相位，并且可以根据历书数据在内部确定码周期和位周内的码周期 。

公开(公告)号：WO2007149990A3

公开(公告)日：2008-02-21

申请号：PCT/US2007071799

申请日：2007-06-21

Applicant: QUALCOMM INC ,  FARMER DOMINIC ,  SEIBERT CRISTINA A ,  WENGLER MICHAEL JAMES

Inventor： FARMER DOMINIC ,  SEIBERT CRISTINA A ,  WENGLER MICHAEL JAMES

IPC: H04B1/707 ,  H04B7/08

CPC classification number: H04B7/0845 ,  H04B1/7107 ,  H04B1/712

Abstract: An apparatus and method for interference cancellation using software or low speed hardware. Antenna signals are received and selected. After selection, interference cancellation processing is applied. In one embodiment, the signal is a spread spectrum signal and selection includes despreading the signal. In one example, the interference cancellation processing includes a phase rotation step and a magnitude manipulation step.

Abstract translation: 一种使用软件或低速硬件进行干扰消除的装置和方法。 接收和选择天线信号。 选择后，应用干扰消除处理。 在一个实施例中，信号是扩频信号，选择包括解扩信号。 在一个示例中，干扰消除处理包括相位旋转步骤和幅度操纵步骤。

公开(公告)号：WO2005017551A3

公开(公告)日：2005-04-14

申请号：PCT/US2004023693

申请日：2004-07-23

Applicant: QUALCOMM INC ,  FARMER DOMINIC ,  LEIRER LASZLO

Inventor： FARMER DOMINIC ,  LEIRER LASZLO

IPC: G01S1/00 ,  G01S5/02 ,  G01S19/25

CPC classification number: G01S19/25 ,  G01S5/0263 ,  G01S19/256 ,  G01S2205/008

Abstract: A method and apparatus for setting coarse GPS time in a GPS receiver in a mobile station (MS) that is communicating with a base station and a position determining entity (PDE). The MS requests an assistance message from the PDE that includes a sequence of predicted navigation bits, including a predicted time indicator field, which is then located and decoded. Coarse time is set responsive to the time indicator value. A Pattern Match Algorithm may be performed to provide more precise GPS time. In order to better set coarse time, an expected error in the Time of Week may be determined, by for example using the expected network latency. The system described herein enables the use of IS-801 protocol by an MS in asynchronous networks by improving the coarse time setting process.

Abstract translation: 一种用于在与基站和位置确定实体（PDE）通信的移动台（MS）中的GPS接收器中设置粗略GPS时间的方法和装置。 MS向PDE请求包括预测导航比特序列的辅助消息，该预测导航比特序列包括预测时间指示符字段，然后对其进行定位和解码。 粗时间根据时间指示值设置。 可以执行模式匹配算法以提供更精确的GPS时间。 为了更好地设置粗略时间，可以通过例如使用期望的网络等待时间来确定周中的预期误差。 这里描述的系统通过改进粗略的时间设置过程使异步网络中的MS能够使用IS-801协议。

公开(公告)号：WO2004088880A3

公开(公告)日：2005-03-10

申请号：PCT/US2004009306

申请日：2004-03-26

Applicant: QUALCOMM INC ,  FARMER DOMINIC

Inventor： FARMER DOMINIC

IPC: G01S19/03 ,  H04B7/26 ,  H04W56/00

CPC classification number: G04R20/02 ,  H04W56/0015 ,  H04W56/005

Abstract: Method and apparatus to implement a "virtual" real-time clock at a terminal based on time information from multiple communication systems. At least one system (e.g., GPS) provides "absolute" time information for the virtual real-time clock, and at least one other system (e.g., a cellular system) provides "relative" time information. The virtual real-time clock is "time-stamped" with absolute time as it becomes available from the first system. Relative time (which may be received from multiple asynchronous transmitters) is mapped to the timeline of the virtual real-time clock as it is received from the second system. Absolute time at any arbitrary time instant on the timeline may then be estimated based on the absolute time from the first system and the relative time from the second system. Absolute times from the first system for two or more time instants may also be used to calibrate the relative time from the second system.

Abstract translation: 基于来自多个通信系统的时间信息在终端上实现“虚拟”实时时钟的方法和装置。 至少一个系统（例如，GPS）为虚拟实时时钟提供“绝对”时间信息，并且至少一个其他系统（例如，蜂窝系统）提供“相对”时间信息。 虚拟实时时钟随着从第一个系统可用而具有绝对时间“时间戳”。 从第二系统接收到的相对时间（可以从多个异步发送器接收）被映射到虚拟实时时钟的时间线。 然后可以基于从第一系统的绝对时间和来自第二系统的相对时间来估计在时间线上任意任意时刻的绝对时间。 用于两个或更多个时刻的第一系统的绝对时间也可用于校准与第二系统相对的时间。