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Method and apparatus for saving energy in a gnss receiver

A technology for receivers and users, applied in measuring devices, satellite radio beacon positioning systems, instruments, etc., can solve problems such as reducing the power efficiency of GNSS receivers

Active Publication Date: 2017-10-03
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unnecessary power consumption in the ME unit further reduces the power efficiency of the GNSS receiver

Method used

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  • Method and apparatus for saving energy in a gnss receiver
  • Method and apparatus for saving energy in a gnss receiver
  • Method and apparatus for saving energy in a gnss receiver

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Embodiment Construction

[0019] Reference will now be made in detail to some embodiments of the present invention, some examples of which are illustrated in the accompanying drawings.

[0020] figure 1 A simplified block diagram of a GNSS receiver 100 performing dynamic power saving is shown in accordance with an embodiment of the present invention. The GNSS receiver 100 has an antenna array 101 for receiving satellite radio signals. The radio frequency receiver module 102 coupled to the antenna receives radio frequency signals from the antenna 101 , converts them into baseband signals and sends them to the processor 103 . The processor 103 processes the received baseband signals and invokes different functional modules to perform the functions of the GNSS receiver 101 . Memory 104 stores program instructions 105 and data to control the operation of GNSS receiver 100 . The GNSS receiver 100 also includes a set of control modules that perform functional tasks, such as a GNSS configuration module 11...

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Abstract

Methods and apparatus are provided for power saving in GNSS receivers. In one novel aspect, the ME tracking period, the ME interval, and the PE working period, the PE interval are dynamically determined based on the GNSS signal conditions and / or the user requirements. In one embodiment, acceptable provision estimated position fix are used. Estimated position result is generated at each GPS position interval if there is no position result generated by the PE working period. In another embodiment, the ME-tracking and / or the PE-working are adjusted to minimum operation needs by using ME-partial (MEP) and / or PE-partial (PEP). PEP is arranged aligned with MEP. In yet another embodiment, the PE working period is delayed such that the PE working period is aligned with the ME tracking period. The position result is generated based on a last epoch's measurement obtained in the previous ME tracking period.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part and claims priority under 35 U.S.C. §120 of U.S. Provisional Application No. 62 / 046,170, filed September 5, 2014, which is hereby incorporated by reference in its entirety . technical field [0003] The present invention relates generally to wireless communications and, more particularly, to power saving in global navigation satellite system (GNSS) receivers. Background technique [0004] With the innovative development of GNSS and the growing consumer demand, GNSS positioning has become an essential function in a wide range of fast-growing mobile devices, such as smart phones, tablet computers, personal navigation systems and other consumer electronic devices. Consumers expect high availability of GNSS positioning while consuming minimal power. Improving the power consumption of the GNSS receiver is important to extending the battery life of devices equipped with the GNSS ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/34
CPCG01S19/24G01S19/34G01S19/42
Inventor 翁锦堂陈志伟招沛宏胡烝铭童柏文游宗桦
Owner MEDIATEK INC