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Validation of time assistance data to reduce satellite positioning degradation

A technology of auxiliary data and time, applied in satellite radio beacon positioning system, data exchange details, service based on location information, etc., can solve problems such as incorrect configuration, increased first positioning time, increased power consumption, etc.

Pending Publication Date: 2020-04-21
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, obtaining assistance information (e.g. GPS time) may be ineffective due to incorrect configuration by the bearer and / or due to malicious eNBs
Mobile devices receiving and utilizing invalid time assistance data may result in a significant increase in time to first fix (TTFF) and / or power consumption when the mobile device attempts to acquire an SPS signal

Method used

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  • Validation of time assistance data to reduce satellite positioning degradation
  • Validation of time assistance data to reduce satellite positioning degradation
  • Validation of time assistance data to reduce satellite positioning degradation

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Embodiment Construction

[0023] Various aspects are disclosed in the following description and associated drawings. Alternative aspects may be devised without departing from the scope of the present disclosure. Additionally, well-known elements of the disclosure will not be described in detail or will be omitted so as not to obscure the relevant details of the disclosure.

[0024] The words "exemplary" and / or "example" are used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" and / or "example" is not necessarily to be construed as preferred or preferred over other aspects. Likewise, the term "aspects of the disclosure" does not require that all aspects of the disclosure include the discussed feature, advantage or mode of operation.

[0025] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of any embodiments disclosed herein. As used herein, the singular forms "a", "...

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Abstract

A method for validating time assistance data includes receiving, at a mobile device, the time assistance data via a first wireless communication technology from a serving cell. The method also includes obtaining a reference global navigation satellite system (GNSS) time, at the mobile device, via a second wireless communication technology and determining whether the time assistance data is valid based on the reference GNSS time. Further included in the method is determining a validated GNSS time based on the time assistance data in response to determining that the time assistance data is valid.

Description

[0001] Priority claims under 35 U.S.C. §119 [0002] This patent application claims the patent application entitled "VALIDATION OFTIME ASSISTANCE DATA TO REDUCTION OF SATELLITE POSITIONING DATA TO REDUCE SATELLITE POSITIONING DEGRADATION)" non-provisional application No. 15 / 706,501 priority. technical field [0003] The present disclosure relates generally to wireless communications, and particularly, but not exclusively, to verifying signal acquisition time assistance data to reduce satellite positioning degradation of a mobile device. Background technique [0004] A disadvantage of satellite positioning systems (SPS) for position determination is the relatively long time required to perform signal acquisition. A satellite vehicle (SV) signal cannot be tracked until it has first been located by searching in a two-dimensional search "space" whose dimensions are code phase delay and Doppler shift. Typically, without a priori knowledge of the location of the signal within t...

Claims

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Application Information

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IPC IPC(8): G01S19/25
CPCG01S19/256H04W4/02G01S19/09G01S19/258G01S2205/008H04L12/18H04L2209/80
Inventor H·钱德拉塞克P·坎德萨米N·K·V·邦达
Owner QUALCOMM INC
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