Telit Wireless Solutions ME910C1 Series Application Note
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Summary of Contents for Telit Wireless Solutions ME910C1 Series
- Page 1 LE910Cx/ME910C1/ML865C 1/NE910C1/A-GPS Application Note 80529NT11738A Rev. 3 – 2021-09-27 Telit Technical Documentation...
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Page 2: Table Of Contents
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note CONTENTS CONTENTS APPLICABILITY TABLE INTRODUCTION Scope Audience Contact Information, Support Symbol Conventions Related Documents BACKGROUND INFORMATION GPS- Global Positioning System GNSS - Global Navigation Satellite System Time to First Fix (TTFF) GNSS SOLUTION Standalone GNSS A-GPS - Secure User Plane Location (SUPL) 3.2.1. - Page 3 LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note DOCUMENT HISTORY 80529NT11738A Rev. 3 Page 3 of 22 2021-09-27 Not Subject to NDA...
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Page 4: Applicability Table
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note APPLICABILITY TABLE PRODUCTS ME910C1 Series NE910C1 Series ML865C1 Series LE910C1/C4 Series 80529NT11738A Rev. 3 Page 4 of 22 2021-09-27 Not Subject to NDA... -
Page 5: Introduction
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 1. INTRODUCTION Scope This document provides guidelines for using the Assisted GPS (A-GPS) functionality provided by Telit's ME910 family of modules. This document also includes information on the Secure User Plane Location (SUPL) standard created by the OMA standardization body. -
Page 6: Symbol Conventions
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note Symbol Conventions Danger: This information MUST be followed or catastrophic equipment failure or personal injury may occur. Warning: Alerts the user on important steps about the module integration. Note/Tip: Provides advice and suggestions that may be useful when integrating the module. -
Page 7: Background Information
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 2. BACKGROUND INFORMATION GPS- Global Positioning System The GPS system is based on a constellation of 24 satellites that are evenly spread across six circular orbital planes with a height of around 20200 km. Orbits in this height are referred to as medium earth orbit (MEO). -
Page 8: Gnss - Global Navigation Satellite System
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note As shown in the above figure, Telit GPS receivers defaults to the geodetic reference (datum) WGS-84, an ECEF (Earth Centered, Earth Fixed) coordinate system that consists in an ellipsoid approximating the total mass of the Earth. WGS-84 provides a worldwide common grid system that can be translated into local coordinate systems or map datums. - Page 9 LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note A-GPS is based on the use of a data connection (for example, a cellular network) to provide predicted satellite information from an A-GPS server to the GNSS receiver. With the help of this data, the receiver is usually able to achieve a positional fix faster than using live data only.
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Page 10: Gnss Solution
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 3. GNSS SOLUTION Standalone GNSS Standalone (or autonomous) GNSS mode is a feature that allows the GNSS receiver installed on the cellular module to perform First Fixing without the use of network data. The GNSS receiver estimates position directly from satellites (GPS, GLONASS, and so on) in line of sight. -
Page 11: A-Gps - Secure User Plane Location (Supl)
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note This command enables the GNSS data stream format and reserves the AT interface port for the NMEA stream only. After a time interval based on the environmental characteristic of the location where the GNSS receiver operates (outside, inside, city, and so on), the continuous streaming of RMC sentences becomes populated. -
Page 12: Ms-Based Mode
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note The LE910Cx/ME910C1/ML865C1/NE910C1 series supports the following type of A-GPS: Secure User Plane Location (SUPL) was proposed by OMA • 3.2.1. MS-Based mode In MS-Based mode, the module requires assistance data to the SLP Server. The A-GPS receiver, installed on the module, receives the signals from the visible satellites calculates its position using data from the SLP Server. - Page 13 LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 5. Set the location’s Quality of Service (QoS). AT$GPSSAV command can be used to save GPS parameters into NVM. AT$GPSQOS=50,50,150,0 6. Set the selected SLP address and Port number. AT$LCSSLP=<slp_address_type>,<slp_address>,<port number> For example: AT$LCSSLP=1,"ExampleSUPLwebsite.com",7276 7. Enable SUPL TLS. AT$LCSTER=1,,,0 // non-secure mode AT$LCSTER=1,,,1...
- Page 14 LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note • Full Test Sequence Non-Secure Mode: Figure 3: Full Test Sequence Non-Secure Mode 80529NT11738A Rev. 3 Page 14 of 22 2021-09-27 Not Subject to NDA...
- Page 15 LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note • Full Test Sequence Secure Mode: Figure 4: Full Test Sequence Secure Mode 80529NT11738A Rev. 3 Page 15 of 22 2021-09-27 Not Subject to NDA...
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Page 16: Product And Safety Information
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 4. PRODUCT AND SAFETY INFORMATION Copyrights and Other Notices SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE Although reasonable efforts have been made to ensure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from the use of the information contained herein. -
Page 17: Usage And Disclosure Restrictions
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note computer programs, including – but not limited to - the exclusive right to copy or reproduce in any form the copyrighted products. Accordingly, any copyrighted computer programs contained in Telit’s products described in this instruction manual shall not be copied (reverse engineered) or reproduced in any manner without the express written permission of the copyright owner, being Telit or the Third-Party software supplier. -
Page 18: Trademarks
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 4.2.4. Trademarks TELIT and the Stylized T-Logo are registered in the Trademark Office. All other product or service names are property of their respective owners. 4.2.5. Third Party Rights The software may include Third Party’s software Rights. In this case the user agrees to comply with all terms and conditions imposed in respect of such separate software rights. -
Page 19: Safety Recommendations
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note Safety Recommendations Make sure the use of this product is allowed in your country and in the environment required. The use of this product may be dangerous and has to be avoided in areas where: • it can interfere with other electronic devices, particularly in environments such as hospitals, airports, aircrafts, etc. -
Page 20: Glossary
LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 5. GLOSSARY 3GPP Third Generation Partnership Project A-GPS Assisted-Global Positioning System C-Plane Network Control Plane Network Data Terminal Equipment ECEF Earth-Centered Earth-Fixed GMLC Gateway Mobile Location Center GNSS Global Navigation Satellite System Global Positioning System LoCation Service MO-LR Mobile Originated-Location Request Mobile Station... - Page 21 LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note 6. DOCUMENT HISTORY Revision Date Changes 2021-09-27 Updated document to new Telit Template standards Minor editorial changes 2019-11-22 Added example and configuration secure mode 2019-07-08 Updated applicability table 2019-02-14 First issue From Mod.0809 rev.3 80529NT11738A Rev. 3 Page 21 of 22 2021-09-27 Not Subject to NDA...
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