Is that correct?
Could you give a list of pros and cons when compared to a plethora of options?
For instance, IR-UWB is simpler (hardware mainly) than narrowband options, although it works with low data rates.
I know that the market has opted for Bluetooth as a viable business solution. But in the first decade of this century, there was a lot of research on IR-UWB, but then it cooled.
We always look for light-weight solutions for IoT and other WSN nodes because the devices are small in size and there is scalability involved. So, to keep the computational cost low, usually we go for easy solutions. Bluetooth operates in ISM band and is easy to use and has low computational capabilities when integrated within a system.
when it comes to energy consumption in low powered embedded devices such as low end IoT devices the radio subsystem requires magnitudes of order more energy than other computational operations. For example, the crypto subsystem (which is usually considered computationally intensive) may consume pJ/bit while the radio for a typical WiFi may consume nJ/bit. So you can see the huge difference. So to reduce the energy consumption low range technologies such as BLE are preferred for these devices.
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