IoT M2M blog

The home of free hints and tips about wireless IoT / M2M

NB-IoT

Why to use NB-IoT instead of LoRaWAN or Sigfox?

Why NB-IoT instead or LoRaWAN and Sigfox

Why now NB-IoT instead of LoRaWAN or Sigfox? There are hundreds of reasons for NB-IoT and hundreds against LoRaWAN and Sigfox. Below is a typical example. The potential customer already prefers NB-IoT and we can deliver NB-IoT with fallback to GSM. In Germany there is no Sigfox Indoor in my city. In the three neighbouring […]

IoT M2M Cookbook – The outlook for embedded antenna design

GSM PCB antenna simulation

The IoT M2M Cookbook contains a simulation of a dual F antenna for cellular. This antenna has been customized several times by customers, or by us on behalf of customers. The Gillette order button using this base design and described in the book supports NB-IoT, LTE-M and GSM from about 750 MHz with 960 MHz […]

NB-IoT and Sigfox comparison – number of operators in Germany and the States

Cellular operators versus Sigfox in US

In order to minimize the risk, the developers of IoT devices try to avoid single source components and services. For microcontrollers and radio modules it becomes difficult, but mostly similar components from different manufacturers are used. The LPWAN technology has to be chosen sooner or later. NB-IoT and LTE-M are offered by different network operators […]

NB-IoT and Sigfox comparison – number of base stations / gateways

In order to understand why more base stations automatically represent a better network, some explanations are necessary. Sigfox has planned 2400 gateways for Germany. These 2400 gateways are confronted with 24,000 LTE base stations from Vodafone and approximately the same amount from Deutsche Telekom. These 48,000 LTE base stations do not all need to be […]

NB-IoT and Sigfox comparison – upload and download capacity

NB-IoT & Sigfox comparsion - upload and download

The message container at LPWAN limits the application in the number of possible bytes per transfer. In addition to the physical container, there is always a logical limit. In the European unlicensed band we have one percent duty cycle in the upload. Therefore, only 36 seconds per hour are available for the protocol header and […]

How to calculate the link budget in LPWAN

How to calculate the link budget

The link budget is the total of all losses and gains from the transmission of a radio wave. A wave is amplified or attenuated by the antenna.  During the transmission of a signal between transmitter and receiver, data can be lost. The study of losses and gains is therefore important to calculate the reliability and […]

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