The energy consumption of a radio transmitter is computed by multiplying the power output with time. The graph clearly shows the envelope of various LPWA transmitters in Europe over time. In Europe SIGFOX and LoRaWAN are limited to 14 dBm TX power. SIGFOX and NB-IoT are along the right scale of time axis. However, in […]
How do you achieve a redesign from BLE/WiFi to unlicensed LPWAN or NB-IoT? What are the pitfalls you might encounter during the redesign? Why can you not use any old antenna to do the job? What you have to know to pass radio certification in different regions? The unlicensed SubGHz bands in Europe, US, Australia, […]
T-Mobile on NB-IoT was the winner in a thrilling public US LPWAN Champion Hurdle. T-Mobile entered the NB-IoT horse trained by parent company, Deutsche Telekom in Germany. The surprise second place was taken by Verizon, also ridden on an NB-IoT horse. The runners up in the first LPWAN race of 2018 were the unlicensed riders. […]
Unfortunately, it is a regular occurrence that people in marketing departments without technical expertise constantly recycle the same rumours and “news” about NB-IoT. Most of these “professionals” have never been inside a technical university and probably did not pass a basic course in physics at elementary school. These same people probably did not choose the […]
Please note that I will add further modules later and that, on request, different parameters can be used in the calculation. The data in the graphic is real and was generated for a report published by a German university for a large metering customer. The report was presented during an NB-IoT seminar September 2017 with […]
Why does the number of LPWAN base stations count? Short answer, it counts a lot. Whilst the CAPEX and BoM might be relatively insignificant for gateway hardware, deployment and maintenance of a base station is a whole new thing altogether. So let’s look at the logistics of deploying a network with multiple base stations and […]
The antenna design in this LoRa-Tag is based on the application note for the Texas Instruments DN038. The customer’s project objective was to match the antenna to the European 868 MHz band without changing the structure. Text excerpt from the TI application note “There are several ways to tune an antenna to achieve better performance. […]
If you are planning to deploy your own LPWA network then you’ll need to understand a few things about RF signal propagation, run a few models and then conduct a few tests in the real world. In this article, we are going to explore what is involved so fasten your seat belts and let’s go… […]
NB-IoT networks worldwide In nominal data, 15 economies would have GDP above $1 trillion, 62 have above $100 billion and 177 have above $1 billion. Top five economies account for approximately 53.82 %, whereas top ten accounts for approx. 67.19 %. top 20 economies add up to over 80%. 92 smallest economies only contribute 1 […]
In Patras, Greece, developers are already working on a smart city technology development using NB-IoT. But how can they avoid the need for a SIM card and its subscription? Let’s consider the technical proposition. Technical needs Smart parking sensors are sending one status update message of 10 bytes two to eight times per hour. 30 […]