One thing that has been surprisingly absent on this blog so far was a discussion on how embedded-SIM cards work. Call me a traditionalist, as for me, the SIM card in its current form has been the greatest invention since sliced bread and so I saw no reason to change the concept. This is because … Continue reading Embedded-SIM Intro – Part 1 – High Level Model
I’ve been in a presentation on the LoRA PHY on the 29th of December at the 33C3 that I can fully recommend if you are interested in the LoRA IoT radio standard and want to learn about “chirp” modulation. During the talk it was mentioned that AT&T is shutting down its GSM network in the … Continue reading As announced in 2012, AT&T Is Shutting Down GSM Now
In the three previous parts (here, here and here) on the Internet of Things and 3GPP, I’ve described Cat-1, Cat-0 and Cat-M1 devices. In this post we get down to the really interesting development in 3GPP on this topic: Narrow Band Internet of Things (NB-IoT) and Cat-NB1 devices (previously referred to as Cat M2 devices).
It looks like the fire in French operators about mobile Internet access has pretty much vanished for the moment. Last year at this time, there were posters such as this one everywhere, advertising how one could use a mobile phone to access the Internet. Nothing of the sort can be seen in the streets of … Continue reading Paris and the Mobile Internet: That was Last Year