NB-IoT part 4: different implementations

NB-IoT can be implemented in three ways: standalone, guard band and in-band. NB-IoT standalone operation Standalone: NB-IoT channel used outside the 4G/5G spectrum, for example, the spectrum used for GSM or satellite communications. Standalone operation is when NB-IoT is used exclusively within a spectrum, whether in a private or public network. This model provides the …

NB-IoT repetitions

NB-IoT part 3: repetitions

NB-IoT is designed to achieve a 20 dB coverage improvement over GSM’s MCL or link budget. The maximum link loss, MCL, for GSM is 144 dB. The maximum link loss for NB-IoT is, therefore, 164 dB. There are several ways that NB-IoT improved the signal over GSM. NB-IoT and Message repetition The downlink improvement is …

NB-IoT basics: part 2 power saving

For NB-IoT, the general design goal of the 3GPP standard is that the battery should last for at least ten years. NB-IoT reduces power consumption using mechanisms called eDRX and PSM. The eDRX (extended Discontinuous Reception) and PSM (Power Saving Mode) parameters allow the device to go into a deep sleep mode for a few …

NB-IoT versions

NB-IoT basics: part 1 versions

NB-IoT is one of two 5G LPWAN standards (the other is called LTE CAT-M1). NB-IoT and LTE-M have excellent energy consumption and power-saving features; they are great for saving a lot of energy compared to other cellular standards. There are different technologies and functions within each of these two to do that. If you have …

ThingsConference 2022

This is the recording of my keynote-session at the ThingsConference. Here is the description of the keynote: 5G vs LoRaWAN -it is just LPWAN The wireless landscape is ever-changing. The public networks are entering the 5G era, where everything from massive IoT to mission-critical communication will be under one umbrella, 5G. For years LoRaWAn and …