What is LoRaWAN® and LoRa®?

LoRaWAN®

LoRaWAN® – short for Long Range Wide Area Network – describes the network structure and the protocol used to ensure standardised communication between network participants. LoRaWAN® ensures the manufacturer-independent use of solutions within a network or across different networks and also allows new solutions to be easily integrated into existing networks.

LoRa®

LoRa® refers to the radio technology used for data transmission, i.e. the basic mode of communication. A special modulation process for transmitting information ensures smooth processes and protects against interference, such as interference from sensors transmitting at the same time.

Basic information:

Originally developed for the Internet of Things (IoT), LoRaWAN® wireless technology is increasingly being promoted by cities, municipalities, property managers and energy suppliers. As an alternative to other wireless systems such as Zigbee or Bluetooth®, LoRaWAN® is a high-performance solution, especially where long ranges and high efficiency are essential.

LoRaWAN® has a wide range of applications. It is a particularly powerful solution for less time-critical applications such as temperature or humidity measurements. From the operator's point of view, compliance with high security standards through double-encrypted data transmission and the possibility of Europe-wide use without incurring licence costs are convincing. Thermokon's LoRaWAN® product portfolio offers the flexibility to choose between battery-powered and wired sensors with analogue signal outputs and LoRaWAN® option. In battery operation, the high energy efficiency of the sensors ensures extremely low-maintenance operation over many years.

The fact that LoRaWAN® is very popular worldwide is due to the wide range of applications and opportunities offered by this relatively new technology. LoRaWAN® not only offers enormous savings potential thanks to the low costs involved in setting up the network, but also makes a significant contribution to cost-efficient utilisation for various applications.

In addition to the classic integration of sensors in the control of ventilation systems, for example, the LoRaWAN® interface offers the possibility of sending live data to a cloud independently of the building management system – this serves as a data basis for preventive maintenance.

Functional principle:

A LoRaWAN® network usually consists of three components: End devices (usually sensors), gateways for receiving and transmitting the recorded measured values and a network server that is fed with the data for further processing and visualisation:

Step 1 – Sensors (end devices):

Are, for example, LoRaWAN® sensors that record measured values and send AES128 encrypted data to a gateway.

Step 2 – Gateways:

Receive the data from the various end devices and pass it on (still encrypted) to the network server (standard IP connection). Each gateway forwards all received data to the network server. In this way, several hundred to approx. 1,000 wireless sensors can be connected via one gateway. To cover larger areas, several gateways are connected to the same network server.

SYSTEM ARCHITECTURE: Cloud

Step 3 – Network server:

The central LoRaWAN® network server is fed with the collected data from its gateways and processes the data further. Data received twice is discarded in the network server. The data is decrypted in the network server and forwarded to the respective application server.

Step 4 – Application server:

The application server decodes the transmitted data and converts it to BACnet, for example. Typical applications also include data visualisation solutions (dashboard).

SYSTEM ARCHITECTURE: BMS

Network server integrated in gateway.

Step 3 – Building management system (BMS):

Integration into building management systems, e.g. via BACnet IP, Modbus TCP/IP, ...