tekmodul BG95-S5 Huanchen Chen GmbH Instructions

BG95-S5 NTN NB-IoT
Huanchen Chen (Erik), tekmodul GmbH

Hardware: Quectel BG95-S5 module, umts-lte-evb-kit-2, Telekom NTN SIM card, SMA antenna.
Firmware Version: BG95S5LAR08A01_01.201.01.201
USB Driver: Quectel_UC20&UC15&EC25&EC21&EC20_Windows_USB_Drivers
NOTE: The AT commands AT+QCFG with a Q are specific commands for Quectel modles
The communication with satellite can only be established outdoor

Preparation

➢ ensure that the firmware supports NTN NB-IoT. You can verify the firmware version with ATI or AT+QGMR
➢ connect the board, insert the NTN SIM card. You can verfiy the SIM with AT+CP
➢ Open QCOM to send AT commands to the target. Note the BG95 does not show AT command COM port in device manager, you can only see two ports (DM & NMEA). However in Qcom, pull down the port selection menu and you will discover the 3 rd port which does not appear in device manager. That is the port you can send AT commands over.

AT Commands Configuration

This document introduces the NTN network-related AT commands supported by Quectel BG95-S5 module. These commands are currently available for sample testing and may be changed or improved in the future.

NOTE
When using the commands mentioned in this document on BG95-S5 module, please note the following points:

1. Like other BG95 series modules, BG95-S5 module performs network search automatically after being powered on. If you need to use BG95-S5 module to register NTN network, just execute the corresponding configuration commands of network search. For example, configure the RAT to be searched for as LTE only (including NTN NB-IoT) using AT+QCFG=”nwscanmode”,3. Then specify the network category to be searched for under LTE RAT as NTN NB-loT only using AT+QCFG=”iotopmode”,3.
2. Compared with the commands of other BG95 series modules, the format and usage of the AT commands mentioned in this document remain consistent, with the addition of NTN-related parameters.
3. If NTN real network testing is required, you need to confirm the data services supported by the current network operator. For example, the NTN network deployed by Skylo operator only supports Non-IP service currently (For the AT commands related to Non-IP service, see document [3])
4. During NTN registration, GNSS switching is automatic without need for manual intervention.
5. The format and usage of other 3GPP network commands on BG95-S5 module are consistent with those of other BG95 series modules. See document [1] for details about these commands.

AT+CGDCONT=“IP”,“internet.m2mportal.de”
(Configure APN for Telekom SIM, NB-IoT)
AT+QCFG=“nwscanmode”,3
(Configure Radio Access Technologie to be Searched for)