公开(公告)号：US20180299561A1

公开(公告)日：2018-10-18

申请号：US15866665

申请日：2018-01-10

Applicant: Mediatek Inc.

Inventor： Pei-Hung Jau ,  Hung-Jen Chen

IPC: G01S19/25 ,  H04B1/7073 ,  G01S19/39

Abstract: A UE may employ two independent oscillators to provide timing to GNSS components and communication components, respectively. To perform a time measurement of the GNSS signals and a time measurement of the communication signals at the exact same time point, in an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus a UE. The UE synchronizes, at a first time point, first system time of a wireless communication component of the UE and second system time of a GNSS component of the UE. The UE further measures a GNSS signal at a second time point subsequent to the first time point to obtain a first GNSS signal measurement. The UE estimates a second GNSS signal measurement of the first time point based on the first GNSS signal measurement and a first time period between the first time point and the second time point.

公开(公告)号：US20150346347A1

公开(公告)日：2015-12-03

申请号：US14660952

申请日：2015-03-18

Applicant: MEDIATEK INC.

Inventor： Chung-Yen Tsai ,  Kung-Shuan Huang ,  Ching-Lung Fu ,  Hung-Jen Chen

IPC: G01S19/34 ,  G01S19/24

CPC classification number: G01S19/34 ,  G01S19/24

Abstract: A method for controlling a GNSS receiver includes: providing a state switching criterion; obtaining at least one positioning information; determining whether to switch from a first operation state to a second operation state according to the obtained positioning information and the state switching criterion, a power consumption of GNSS receiver operating under the first operation state and the second operation state is different; the obtained positioning information includes at least one of a speed value of GNSS receiver, a satellite distribution value of GNSS receiver, a satellite signal strength value of GNSS receiver, a location identification of GNSS receiver, instant motion information from a motion sensor, or location information from a WLAN device, a Bluetooth device or a UV light sensor.

Abstract translation: 一种用于控制GNSS接收机的方法包括：提供状态切换标准; 获取至少一个定位信息; 根据获得的定位信息和状态切换判定判断是否从第一操作状态切换到第二操作状态，在第一操作状态和第二操作状态下操作的GNSS接收器的功耗不同; 所获得的定位信息包括GNSS接收机的速度值，GNSS接收机的卫星分配值，GNSS接收机的卫星信号强度值，GNSS接收机的位置标识，来自运动传感器的即时运动信息或位置 来自WLAN设备，蓝牙设备或UV光传感器的信息。