Frequently asked questions
What is LPWAN?
LPWAN (Low Power Wide Area Networks) is a wireless technology specially designed for IoT to allow long-range data transmission at a low bit rate. LPWAN features include: long-range radio signal transmission, low power consumption by endpoint device, and operation within license-free frequency bands.
What is the difference between LPWAN and NB-IoT?
NB-IoT is an extension of a widespread cellular data transmission standard for IoT devices, which leverages existing cellular network infrastructure. NB-IoT features include: a large network capacity, high bandwidth, and operation within licensed radio frequency bands.
The advantages of LPWAN technology are as follows: use of licence-free frequency bands, a large coverage area of one base station (network gateway), lower cost IoT end devices, longer operating life with a single battery, simplicity and low cost IoT network deployment.
What kind of LPWAN technologies exist in the market?
There are 2 types of LPWAN networks: UNB LPWAN (SigFox, Strizh and WAVIoT) and WNB (LoRaWAN). Each of these network types has its pros and cons. LoRaWAN technology is designed to be a universal network to support the operation of bidirectional end devices. Such universality leads to the transfer of large amounts of service information, which negatively affects the network bandwidth (the maximum amount of data that can be transmitted in a fixed amount of time).
SigFox, Strizh and WAVIoT networks, unlike LoRaWAN, use an Ultra Narrow Band to increase signal to noise ratio at the receiver and to extend the distance. The main issue with these types of networks is the challenging implementation of the downlink since the longitudinally symmetric downlink requires frequent increased power of the base station transmitter (network gateway). Another disadvantage of UNB is the high sensitivity of narrow-band phase modulation to multipath propagation, as reflected in the significant reduction in operating distance on moving objects.