Parameters nRF9160 LTE-M

[Alskandar]

Hello,

A quick question about using an nrf9160 (+ sdk 2.5 - modem 1.3.5)

When I activate the following parameters:
# LTE-M (LTE-CatM1)
CONFIG_LTE_LINK_CONTROL=y
CONFIG_LTE_NETWORK_MODE_LTE_M_GPS=y
CONFIG_LTE_NETWORK_USE_FALLBACK=n
CONFIG_LTE_NETWORK_TIMEOUT=60
CONFIG_PDN=y
CONFIG_PDN_DEFAULTS_OVERRIDE=y
CONFIG_PDN_DEFAULT_APN="xxxxxx”
CONFIG_PDN_DEFAULT_FAM_IPV4=y

## PSM | Power saving timers
CONFIG_LTE_PSM_REQ=y
# T3412 | 1 hour interval between modem wake-ups
CONFIG_LTE_PSM_REQ_RPTAU="00100001”
# T3324 | wake-up time:
CONFIG_LTE_PSM_REQ_RAT="00000000”
# Enable notifications when modem enters PSM
CONFIG_LTE_LC_MODEM_SLEEP_NOTIFICATIONS=n

Will the modem only be able to connect to an LTE-M network, or is it possible for it to connect to a conventional 4G LTE network?

If so, how do I get LTE-M networks only?

Thanks

[Håkon Alseth]

Hi,

 

nRF91-series devices are LTE Cat M1 and NB-IoT capable devices, and does not have 2G (GSM) fallback, nor will it connect to "conventional LTE" networks.

These devices will only connect to LTE M1 or NB-IoT capable networks.

 

With this configuration:

CONFIG_LTE_NETWORK_MODE_LTE_M_GPS=y

You are enabling GNSS + LTE Cat M1.

 

Kind regards,

Håkon

[Alskandar]

Thanks Håkon ! 

Are there any French users on the forum who have had LTE-M connections with Free?

I can't find any information about them and LTE-M (apart from their arrival on the 800 Mhz band in March 25).

[Håkon Alseth]

Happy to help out!

Alskandar said:

Are there any French users on the forum who have had LTE-M connections with Free?

Unfortunately, I do not have any feedback on this specific vendor, but indications from GSMA's coverage map indicate that Free does not have coverage in France:

https://www.gsma.com/solutions-and-impact/technologies/internet-of-things/deployment-map/

 

However, this deployment map can be outdated.

 

Onomondo also has a coverage search, which lists Free as a LTE-M validated network:

https://onomondo.com/iot-sim/the-best-iot-sim-cards-for-france/?location=France

(remember to check only LTE-M)

 

It might be beneficial to ask Free directly if they have LTE CatM1 support in your region/area.

Kind regards,

Håkon