Cellular Device GNSS Pseudorange Extraction

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Solution Overview

Problem

Conventional cellular devices with integrated GNSS chipsets primarily provide position fixes but do not make available pseudorange information for use outside the chipset, limiting its utilization in surveying and other positioning operations.

Innovation Solution

An embedded GNSS chipset in cellular devices calculates and extracts pseudorange information, allowing its use elsewhere in the device, enabling improved accuracy position fixes through processing and integration with other location services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If conventional cellular devices with integrated GNSS chipsets are used, then position fixes are provided, but pseudorange information is not made available for use outside the chipset

Engineering Contradiction:

Improvepseudorange information availabilityVSAvoidchipset integration limitations

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts pseudorange information from the GNSS chipset and makes it available to other components in the cellular device. The chipset accessor logic and pseudorange information extractor logic retrieve this information from the GNSS receiver and pass it to the position determination logic, enabling external utilization without requiring a separate GNSS receiver.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent enables the cellular device to perform multiple positioning functions by making pseudorange information available to both the GNSS chipset and external position determination logic. This allows the device to utilize multiple location services (cell tower triangulation, WiFi positioning, and GNSS) through a unified processing approach.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If pseudorange information is extracted and processed, then positioning accuracy is improved, but device processing complexity increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidprocessing complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the positioning processing into distinct functional modules: a chipset accessor logic for accessing GNSS data, a pseudorange information extractor logic for retrieving pseudorange data, and a position determination logic for calculating position fixes. This modular approach manages processing complexity while improving positioning accuracy through integrated multi-service processing.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9910158B2Position determination of a cellular device using carrier phase smoothing

Publication Date: 2018.03.06 TRIMBLE INC

AI summary

A Global Navigation Satellite System (GNSS) chipset embedded within the cellular device is accessed. The GNSS chipset calculates raw observables that include raw pseudoranges and carrier phase information. The raw observables are extracted from the GNSS chipset for processing elsewhere in the cellular device outside of the GNSS chipset. Smoothed pseudoranges are provided by smoothing the raw pseudoranges based on the carrier phase information. The accessing, the extracting and the providing are performed by one or more hardware processors located in the cellular device and outside of the GNSS chipset.