What is LoRaWan?
LoRaWan (Long Range Wide Area Network) is a communication technique which enables the “Internet of Things, (IOT). IoT devices are embedded into all kind of “things” which can exchange data with other devices and systems over the Internet. LoRaWan can be used is to help improve community functions such as for example waste disposal, home care and care for the elderly, parking, and streetlight control systems.
This technology enables the transfer of data over long distances with low power consumption, low enough to enable more than 10 years of battery life. The range is up to 15 km in rural areas.
An IoT device with a LoRaWAN client will send data to a nearby LoRaWAN gateway. The Gateway forwards it to an internet server, which then relays the data to an application backend. Encryption is used to secure the data being broadcast from devices — with one encryption key being used to authenticate the device against the network server and the other against a company’s backend application.
Other advantages besides long range, low power consumption and high security is high capacity at low cost – A network can support millions of messages. However, the number of messages supported in any given deployment depends upon the number of gateways installed.
The frequencies used are 868 MHz (Europe) and 915 MHz (North America), but other frequencies can also be used. These are license-free frequencies which means that it does not cost anything to use them.
How can PROGIRA help you?
Theoretically the coverage range of a LoRaWAN network using a 14 dBm transmitter is 800 km, assuming “free space” propagation. In reality however, the coverage range is much smaller due to imperfections in receivers/transmitters, a high location probability requirement (the placement of the receivers is often limited). Obstacles in terrain such as trees, buildings may also limit the coverage range of the system.
PROGIRA can be your partner in the network design phase of your project. We can help you with:
- Setting up a planning guideline for your project, which defines all parameters. It will ensure a good function of your services and a consistency throughout the project implementation.
- Our widely used PROGIRA® plan planning software, adopted for LoRaWAN networks, can be used to design the network to achieve good quality of service at low cost. The software can optimize networks in all types of environments, from rural areas to high rise city centres using advanced 3D propagation models.
- PROGIRA® reach can be used to visualize the service area on a professional map service. As the network grows, we will update the application to reflect the service area at any time.
What does one of our clients say?
“Stadshubbsalliansen” is an open city hub network in Sweden. It is a growing membership based network consisting of “stadsnät”, fiber network companies who also supply LoRaWAN coverage. StadshubbsAlliansen have members from south to the very north of Sweden.
“We contacted PROGIRA since we wanted to visualize the service area for our network on a map. PROGIRA helped us to define the service criteria and to verify the actual service area using measurements.
Our map application is now up and running and the service area is in good agreement with the experienced coverage”, says Jimmy Witlock, network engineer at Öresundskraft.