Telit Wireless Solutions ME910C1 Series - MS-Based Mode

LE910Cx/ME910C1/ML856C1/NE910C1 A-GPS Application Note
80529NT11738A Rev. 3 Page 12 of 22 2021-09-27
Not Subject to NDA
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.
For the MS-Based mode, an example is provided below. It should be noted that in this
configuration an example of SUPL Server is provided: however, it is responsibility of the
user to select the appropriate server fitting their needs.
Following are some of the assumptions:
• Module is powered off;
• GNSS antenna is connected and placed in sight of satellites (must be able to
receive GNSS signal);
• Cellular antenna is connected;
• SIM card is inserted; and
• APN is already set.
1. To begin, turn on the cellular module.
2. Delete the GNSS information stored in NVM, if required. It is the history buffer
between the GNSS device and the module.
AT$GPSR=0
AT$GPSNVRAM=15,0
Note: This step is optional and should be performed only if the buffer
needs to be cleaned.
3. Verify that no GNSS information is available after history buffer cleaning (command
response should be empty and have no location information).
AT$GPSACP
$GPSACP
4. Set the SUPL version support to 2.0.
AT$SUPLV=2