What is LoRa Technology?

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What is LoRa Technology?
LoRa technology is a wireless transmission technology created for the Internet of Things.
Nowadays, information technology is highly developed, and after the Internet, the Internet of
Things (IoT) is attracting widespread attention in society at a rapid pace. With the rapid rise of
the Internet of Things and the increasing number of applications, wireless communication
protocols such as Wi-Fi, ZigBee, Bluetooth, etc., make it possible to have a wealth of options
when building the Internet of Things.
The different communication technologies have different characteristics and are each suitable for
their own application scenarios. However, for long-distance, low power consumption and only a
small amount of data to be transmitted, there is currently no wireless communication technology
that can better meet these needs, which is why LoRa technology was born.
Introduction to LoRa technology
LoRa technology is the abbreviation of Long Range, a kind of Low PowerWide Area Network
(LPWAN) communication technology, which was released by Semtech in 2013.
In the past, before LPWAN was created, it seemed that there was a trade-off between long-range
and low power consumption. The advent of LoRa wireless technology has changed the trade-off
between distance and power consumption, allowing for long-range transmission with the
benefits of low power consumption and low cost.
A LoRa network is formed as in the diagram below, with remote nodes connected to a back-end
web server via multiple gateways (gateways) that upload data to the cloud or server.
In a LoRa network, each node is not connected to the other, but must first connect to a gateway
before it can connect back to a central host, or transmit data to another node through the central
host.
Messages from LoRa end nodes can be transmitted to multiple gateways at the same time, and
messages can be bridged between gateways to extend the transmission distance further.

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LoRa vs. LoRaWAN
LoRa technology is a physical layer or wireless modulation used to establish long-distance
communication links. Many traditional wireless systems use frequency shift keying (FSK), which
can effectively meet low power requirements.
LoRa technology is based on linear FM spread spectrum modulation, which not only retains the
same low-power characteristics as FSK modulation, but also increases communication distance,
improves network efficiency, and eliminates interference.
LoRaWAN, on the other hand, is used to define the communication protocol and system
architecture of the network. It is a low-power wide-area network standard introduced by the
LoRa Alliance, which can effectively implement the LoRa physical layer to support long-distance
communication.
This LoRaWAN protocol and architecture have a profound impact on the battery life of terminals,
network capacity, quality of service, security, and suitable application scenarios. In short,
LoRaWAN technology is actually a kind of network (WAN = Wide Area Network).
LoRa technology advantages
LoRa technology has the advantages of long-range, low power consumption, and low cost.
With a range of 15 to 20 kilometers, low power consumption for extended battery life,
license-free frequency bands, low cost of infrastructure and nodes/terminals, the cost of using
LoRa technology is significantly reduced.
Practical applications of LoRa technology
In recent years, LoRa's wireless technology development has become increasingly mature,
gradually piecing together a complete ecosystem of IoT applications.
In order to promote the Internet of Things and build smart cities, the government has also taken
advantage of the development trend of this technology to deploy LoRaWan technology to build
an experimental platform for the Internet of Things and solve the needs of citizens with smart
solutions.
In addition to the smart city solutions that the government is vigorously promoting, application

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scenarios that are suitable for LoRa technology use include the following categories.
LoRa technology’s Smart Buildings
The trend is for buildings to become intelligent, as previous building equipment gradually fails to
meet human requirements for quality of living. The building can be retrofitted with sensors for
temperature, humidity, security, and the monitoring information can be uploaded on a regular
basis to allow the building manager to monitor and keep track of the building's latest status.
LoRa technology’s Intelligent firefighting
Firefighting and fire escape are both critical. Existing fire-fighting equipment is limited in what it
can achieve in the event of a fire.
For example, static signaling cannot cope with changes in the fire scene and tell evacuees the
correct direction of escape in real-time, often delaying escape.
The dynamic guidance system uses the long-range, low-frequency, and low-power characteristics
of LoRa technology wireless transmission to send a signal from the dynamic guidance host to the

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dynamic guidance light board installed in the building in the event of a fire. Upon receiving the
signal, the light board will immediately give instructions to guide the evacuees to a safe escape
route.
LoRa technology’s Smart Agriculture
For agriculture, low-power and low-cost sensors are essential.
Smart farming is the application of IoT technology to traditional farming, where environmental
data such as temperature, humidity, and salinity are regularly uploaded through sensors, which
can help to improve yields and reduce water consumption.
LoRa technology’s Logistics tracking
The battery life of the terminal is important for both tracking and positioning, and as the cost and
battery life of the tracking system must be taken into account, it is well suited to LoRa technology
for tracking.
Logistics companies can deploy networks at specific locations according to their location needs.
For example, goods are placed in warehouses or distributed via trucks for most of the time during
the delivery process, so operators only need to install LoRa gateways in warehouses, areas
covered by the logistics network, or even in trucks, to allow the trackers on the goods to be

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connected to the network.
For sellers, this enhances management and efficiency, and prevents goods from being lost; for
consumers, it also enables them to keep track of the flow of goods and their timelines.
In summary, as IoT technology continues to mature, its derivative technologies will eventually
change people's lives significantly. Any kind of wireless communication technology has its own
application scenario.
LoRa technology has a wide range of applications, with features such as long-range transmission,
low frequency, and low power consumption greatly reducing the use and maintenance costs of
IoT data transmission.
LoRa technology has become an important part of the establishment of smart cities and will
make human life more comfortable, safe and convenient.
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