Lorawan Modules - Libelium Waspmote Plug & Sense! Series Technical Manual

8.5. LoRaWAN modules

LoRaWAN is a Low Power Wide Area Network (LPWAN) specification intended for wireless battery-operated
devices in regional, national or global network. LoRaWAN target key requirements of Internet of things such
as secure bi-directional communication, mobility and localization services. This standard will provide seamless
interoperability among smart Things without the need of complex local installations and gives back the freedom
to the user, developer, businesses enabling the role out of Internet of Things.
LoRaWAN network architecture is typically laid out in a star-of-stars topology in which gateways is a transparent
bridge relaying messages between end-devices and a central network server in the back-end. Gateways
are connected to the network server via standard IP connections while end-devices use single-hop wireless
communication to one or many gateways.
Figure: LoRaWAN network
Communication between end-devices and gateways is spread out on different frequency channels and data rates.
The selection of the data rate is a trade-off between communication range and message duration. Due to the
spread spectrum technology, communications with different data rates do not interfere with each other and
create a set of "virtual" channels increasing the capacity of the gateway. To maximize both battery life of the end-
devices and overall network capacity, the LoRaWAN network server is managing the data rate and RF output for
each end-device individually by means of an adaptive data rate (ADR) scheme.
National wide networks targeting Internet of Things such as critical infrastructure, confidential personal data or
critical functions for the society has a special need for secure communication. This has been solved by several
layer of encryption.
Protocol: LoRaWAN 1.0, Class A
LoRaWAN-ready
Frequency:
LoRaWAN EU module: 868 MHz and 433 MHz ISM bands
•
LoRaWAN US module: 902-928 MHz ISM band
•
LoRaWAN AU module: 915-928 MHz ISM band
•
LoRaWAN IN module: 865-867 MHz ISM band
•
LoRaWAN ASIA-PAC / LATAM module: 923 MHz ISM band
•
TX power:
LoRaWAN EU module: up to 14 dBm
•
LoRaWAN US module: up to 18.5 dBm
•
LoRaWAN AU module: up to 18.5 dBm
•
LoRaWAN IN module: up to 18.5 dBm
•
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Radio modules
v8.6