LoRa integrates LR-FHSS functionality to support satellite communications with dense deployments. It is estimated that terrestrial network connectivity covers only about 10% of the global surface area, and there are still many places in the world without carrier network signal coverage or the ability to set up base stations. With the advantage of long-range, LoRa has been attracting attention in the field of satellite communication since its inception, and there are already relevant satellite communication applications on the ground both at home and abroad. Previously, LoRa Alliance announced that the LoRaWAN protocol supports LR-FHSS (Long Range - Frequency Hopping Spread Spectrum) function.

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LoRa Integrates LR-FHSS Function
LoRa integrates LR-FHSS functionality to support satellite communications with dense
deployments.
It is estimated that terrestrial network connectivity covers only about 10% of the global surface
area, and there are still many places in the world without carrier network signal coverage or the
ability to set up base stations.
With the advantage of long-range, LoRa has been attracting attention in the field of satellite
communication since its inception, and there are already relevant satellite communication
applications on the ground both at home and abroad.
Previously, LoRa Alliance announced that the LoRaWAN protocol supports LR-FHSS (Long Range -
Frequency Hopping Spread Spectrum) function.
Currently, Semtech's LoRa chips already support LR-FHSS, which can significantly improve
network capacity and anti-interference capability through software upgrade of LoRa chips and
gateways, enabling low-power, reliable direct communication from sensors to satellites.
In satellite communications, LoRa technology has been used in animal husbandry, environmental
management, forest fire-prevention, and shipping.
The addition of LR-FHSS support to Semtech's LoRa platform not only helps it provide more
cost-effective, ubiquitous connectivity to remote areas but also marks an important step toward
large-scale IoT deployments in densely populated areas, further driving global LoRa deployments
and application innovation for smart industries, smart parks, and other areas.
What are the features of LR-FHSS?

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The two main features of LR-FHSS: large capacity access and super anti-interference
LR-FHSS can support millions of terminal nodes through ISM band and dedicated frequency band,
providing higher reliability for IoT services, and it significantly increases the network capacity,
which can solve the channel congestion problem that has been restricting the development of
LoRaWAN before.
In addition, LR-FHSS has high interference immunity, mitigates packet conflicts by improving
spectral efficiency, and has the uplink frequency hopping modulation capability.
During operation, LR-FHSS breaks each packet sent by an end node into small chunks (each
approximately 50 ms long) and randomly spreads them over defined frequency bandwidths
(including 137 kHz, 336 kHz, and 1.523 MHz, depending on the region).
In addition, the LR-FHSS uses redundant physical connectors at different frequencies to further
improve the modulation robustness to in-band interference sources.
Integrating LR-FHSS to drive LoRa application expansion
Wi-Fi has grown exponentially over the past two decades by expanding the available frequency
bands (2.4GHz, 5GHz, and 6GHz) and channel bandwidths (20MHz, 40MHz, 80MHz, and
160MHz).
Similarly, LR-FHSS will also drive LoRa deployments globally.
LoRa has a natural advantage in satellite communications due to its ecological integrity,
long-range, anti-interference, low power consumption, and overall low cost (no additional
hardware development is required and it has its own satellite communication capability).
With the integration of LR-FHSS, LoRa will not only expand the network capacity but also better
support the harsh radio application environment (deep indoor) and provide the possibility of
increasing ground connection coverage in some areas, thus further expanding the application
space.
1. Support satellite IoT services
LR-FHSS enables satellites to connect to vast remote areas of the globe, supporting location and
data transmission needs in areas without network coverage.
Relevant LoRa use cases include wildlife tracking, marine vessel container location, ranch
livestock location, smart agriculture solutions to improve crop yields, and global distribution asset
tracking for supply chain efficiency.
LoRa-based satellite services offer lower prices to the market and will see growth opportunities in
industries such as logistics, asset tracking, transportation, utilities, agriculture, and maritime.
2. Expand network capacity to support more frequent data exchange
Logistics and asset tracking, smart buildings and parks, smart homes, smart communities, and a
host of other emerging LoRa-based use cases are emerging.
The amount of LoRa modulated signals over the air is expected to increase significantly as signals
from these application scenarios become longer and more frequently exchanged.
LR-FHSS can expand network capacity and enhance robustness without replacing existing
network infrastructure.
The new LR-FHSS rates will support payloads at both high power and low rates, allowing for

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greater channel capacity at the lowest data rate end nodes.
With the increased capacity, outdoor or indoor LoRaWAN networks can also add more end nodes
and support devices with frequent data exchange, such as industrial sensors with frequent data
transmission.
In other words, the advantage of LR-FHSS high-capacity can break through the channel
congestion problem that has been restricting the development of LoRaWAN before, and support
the development of new applications and solutions in high-capacity scenarios such as smart
industry and smart campus.
3. Enhance indoor deep coverage
In addition to expanding network capacity, LR-FHSS supports deeper indoor terminal nodes in the
same network infrastructure, thus improving the scalability of large-scale IoT projects.
For example, LoRa is the technology of choice for the global smart meter market, and enhanced
deep indoor coverage will further strengthen its position.
Smart cities have become a global trend, and the integration of LR-FHSS in the LoRa platform will
bring even better coverage and performance to IoT solutions for a smarter, safer, and more
sustainable world.
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