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Sierra Wireless HL7810 Satellite NTN Network

The guide provided below contains AT command instructions for the Sierra Wireless HL7810 module designed to work with Skylo Satellite IoT for Non-Terrestrial Networks (NTN).

Set up Sierra Wireless HL7810

Quick Navigation

Set up the EVK Kit

  • Connect the UBC Cable to the EVK kit as shown on the photo above

  • Connect the LTE antenna as shown on the photo above

  • Connect the GPS antenna as shown on the photo above

  • Insert the Monogoto SIM

Connect your PC to the EVK Kit

Use the USB to connect your computer to the AT CMD port of the EVK Kit

When using Windows, install the driver using the disk or USB stick provided by Murata.

Connect to the EVK kit using a terminal program. You can use PuTTY for Windows, or Screen, minicom, or Miniterm for Mac or Linux.

Set the baud rate to 115200 Enter AT, if the connection with the HL7810 modem has been established, the board will answer with OK.

Connect the HL7810 to Skylo

Keep the AT Commands manual next to you for more details about the commands. Click here to download the latest version, and scroll down to Documentation and Resources to find the AT Commands Manual.

For some firmware versions, you need to click and hold the SW1 button in order to send AT Commands to the module.

Reset the modem to its default configuration:

Restore factory settings:

AT+NVBU=1

Reboot the Module:

AT+CFUN=1,1

Check the status of the SIM card. The correct response should be: +CPIN: READY

AT+CPIN?

+CPIN: READY means that the SIM is ready for use and does not require any PIN entry.

Executing Commands by Version

Execute various commands based on the software version you are using. Make sure to execute the commands that correspond to your version.

Query device information

Request the product type, hardware, and firmware version:

AT+CGMR

Example response:

HL7810.5.7.3.0

Request the IMSI (International Mobile Subscriber Identity):

AT+CIMI

Request the ICCID (Integrated Circuit Card ID), which is the identification number of the iSIM 

AT%CCID

Set the error reporting to verbose, resulting in more descriptive error messages (optional):

AT+CMEE=1

Set the NTN Parameter (enter the commands)

Set the APN to data.mono:

AT%PDNSET=1,"DATA.MONO","IP"

Define the NB-IoT NTN 

AT+KSRAT=3

Lock the modem to a specific region/band

--Multi bands 23,255,256--
AT+KBNDCFG=3,C000000000000000000000000000000000000000000000000000000000400000
Band 23  = AT+KBNDCFG=3,0000000000000000000000000000000000000000000000000000000000400000
Band 255 = AT+KBNDCFG=3,4000000000000000000000000000000000000000000000000000000000000000
Band 256 = AT+KBNDCFG=3,8000000000000000000000000000000000000000000000000000000000000000

Although the modem may support many different NTN bands,

23 = Canada

255 = L band Global (United States, Taiwan, Australia, New Zealand, Japan)

256 = S band Europe

Reset in order for the parameters to take effect

AT+CFUN=1,1

Disable the radio

AT+CFUN=0

Lock the modem to a GNSS mode to Internal GNSS Mode

AT%NTNCFG="POS","IGNSS","0"

Report notification about Timing Advance calculation:

Send registration status

AT+CEREG=2
AT+KSREP=1

Enable radio

AT+CFUN=1

Example response:

OK
CEREG: 2
%NOTIFYEV: "SIB31"
+CEREG: 0
+CEREG: 2
%NOTIFYEV: "SIB31"
+CEREG: 5,"07ED","002C480D",9

CEREG State Change Report Codes

The table below provides an overview of the possible values for CEREG state change reports, indicating the module's network registration status.

Value
Description

0

Not registered, and the module is not searching for a network.

1

Registered to the home network.

2

Not registered, but the module is attempting to attach or searching for a network.

3

Registration denied by the network.

4

Unknown (for example, out of coverage)

5

Registered and roaming.

Query the signal measurement

request a specific network measurement, such as signal strength, noise levels, or other metrics:

AT%MEAS="8"

Example response: %MEAS:Signal Quality:RSRP= -115,RSRQ= -15,SINR= -3,RSSI= -120.

Gather detailed information on physical connectivity and eNB

request physical connectivity

AT%PCONI
Example response: 
duplexing mode: FDD
Transmission mode: SISO
Bandwidth: 180kHz
EARFCN: 7699
Global Cell ID: 0x002C480D
Physical Cell ID: 29
HNBN: N/A
Band: 23

Test the connection by sending UDP payload

When using Non-Terrestrial Networks, data can only be sent using UDP.

In order to send data using UDP, 4 AT Commands needs to be sent:

  1. Create UDP socket

  2. Activate socket

  3. Send UDP data

  4. Close UDP Socket

1. Create UDP socket 

AT%SOCKETCMD="ALLOCATE",1,"UDP","OPEN","<ip address>",<port>

Example message: AT%SOCKETCMD="ALLOCATE",1,"UDP","OPEN","34.192.142.126",12345

Example response: %SOCKETCMD:1

2. Activate Socket 

AT%SOCKETCMD="ACTIVATE",1

Example response: %SOCKETCMD:1

3. Send UDP data 

AT%SOCKETDATA="SEND",1,<length>,"<data>"

Example message: AT%SOCKETDATA="SEND",1,13,"48656C6C6F2C20776F726C6421"

Example response: %SOCKETDATA:1,13

Make sure to exactly count the number of characters you send, or you will receive an error.

It may take up to 10 seconds for the message to be fully processed.

Request info UDP Socket

AT%SOCKETCMD="INFO",1

Example response: %SOCKETCMD:"ACTIVATED","UDP","10.22.243.30","34.192.142.126",12345,7

4. Close UDP socket

End your UDP session by closing the UDP socket.

AT%SOCKETCMD="DELETE",1

Expected response: OK

Transition Between Satellite Network and Public Network

When transitioning between satellite and public networks using the Murata Kit use the following commands:

Command for Switching to Public Network: 

AT+KSRAT=0

This command activates the CAT-M mode for public networks, allowing the device to switch from satellite connectivity to a cellular public network.

Command for Switching Back to Satellite Network 

AT+KSRAT=3

This command activates the NBNTN mode, returning the device to satellite network connectivity.

Great work on connecting the Murata LBAD0XX1SC-DM to Monogoto! Have a look at the Things logs in the Monogoto Console to find more details about the established connection.

Useful Links

PreviousMurata ALT1250 Satellite NTN NetworkNextNTN Certified Chipsets

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