Extracting Pseudorange Data from Cellular GNSS Chipsets
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Solution Overview
Problem
Conventional cellular devices with integrated GNSS chipsets are limited in providing pseudorange information for use outside of E-911 services and are not designed to extract or process this data for other applications, restricting their positioning capabilities.
Innovation Solution
An embedded GNSS chipset in cellular devices calculates and extracts pseudorange information, allowing its use by the cellular device for various applications beyond the GNSS chipset, through a Secure User Platform Location (SUPL) client that accesses and processes the data for improved positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional GNSS chipsets are used in cellular devices, then E-911 service is provided, but pseudorange information is not available for other applications
Solution Approach 1:
The patent extracts pseudorange information from the GNSS chipset and makes it available to the cellular device's processing system. The chipset provides position fixes and pseudorange data through controlled access, enabling extraction of positioning information for applications beyond E-911 services.
Solution Approach 2:
The patent enables the GNSS chipset to serve multiple functions by making pseudorange information available for both E-911 emergency services and other positioning applications such as navigation, security, and telematics. The system achieves multi-functionality by breaking vendor access controls and allowing broad utilization of positioning data.
2Reliability
If vendor access control is maintained on GNSS data, then chipset security is preserved, but data availability for device applications is restricted
Solution Approach 1:
The patent implements a feedback mechanism where the cellular device requests and receives pseudorange information from the GNSS chipset through controlled access interfaces. The system maintains security protocols while enabling data flow from the chipset to device applications, balancing reliability with versatility.
Data Source
AI summary
Pseudorange information is extracted by a cellular device from a Global Navigation Satellite System (GNSS) chipset of the cellular device. The cellular device accesses the GNSS chipset embedded within the cellular device where the GNSS chipset calculates pseudorange information for use by the GNSS chipset. The cellular device extracts the pseudorange information from the GNSS chipset for use elsewhere in the cellular device outside of the GNSS chipset.