LoRa network – a short introduction

Irene de Ruijter, Erik Bruinzeel & Timme Hovinga

KPN Internet of Everything

18 maart 2015

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Who are we?

Erik Bruinzeel Technical Product Manager Internet of Everything

Timme Hovinga Technical Product Manager Internet of Everything

Irene de Ruijter Program Manager IoT Academy

Internet of Everything www.kpn.com/ioe Twitter: #kpnioe Linkedin: KPN IoE

LoRa is an open network technology comparable to wifi and bluetooth, but with a coverage of 3-15 km

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In 2015, KPN will start the national roll-out of LoRa, a new network technology

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With LoRa, devices can be connected to the internet over a long range

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With LoRa, it’s also possible for sensors to share relevant data

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Application examples

Pilot case:

Client:

Developer of LoRa applications.

Challenge:

Measuring and reporting on the contents of

beertanks that are in cellars, from a distance

with the aim to save costs.

Solution:

By connecting the beertanks to LoRa they

only have to be refilled when necessary. The

result is less unnecessary kilometres and

emergency deliveries on Saturday nights.

Suppliers have realtime data on the

temperature and bar owners cannot refill

the tanks with a cheaper brand of beer

without being noticed.

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What is LoRa exactly? LoRa is a wide area network for IoT devices

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- Cellular technology - Energy efficient communication over long distances - Adaptive data rate based on signal strength - ETSI compliant ICM frequency band - KPN is a member of the LoRa Alliance

Class A, B & C Different classes for different usecases

Bi-directional end-devices (Class A): End-devices of Class A allow for bi-directional communications

whereby each end-device's uplink transmission is followed by two short downlink receive windows.

The transmission slot scheduled by the end-device is based on its own communication needs with a

small variation based on a random time basis (ALOHA-type of protocol). This Class A operation is the

lowest power end-device system for applications that only require downlink communication from

the server shortly after the end-device has sent an uplink transmission. Downlink communications

from the server at any other time will have to wait until the next scheduled uplink.

Bi-directional end-devices with scheduled receive slots (Class B): In addition to the Class A random

receive windows, Class B devices open extra receive windows at scheduled times. In order for the

End-device to open its receive window at the scheduled time it receives a time synchronized Beacon

from the gateway. This allows the server to know when the end-device is listening.

Bi-directional end-devices with maximal receive slots (Class C): End-devices of Class C have nearly

continuously open receive windows, only closed when transmitting. Class C

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LoRa is extremely energy efficient Due to limited time windows and data usage

A LoRa device should work for up to 10 years on 1 AA battery

The data provides insight on the battery status…

…and the status of the connection

Adaptive Data Rate. 2D case, flat landscape, 868 MHz

Understanding the LoRa network Following the OneM2M architecture concept

High level Signaling Keys (authentication & security) and data exchange

Mote

AppR

Different layers Semtech is the main driver behind the technology

LoRa Radio

LoRaWAN devAddr

Client Applicatie

Semtech`SX1272

Gateway SF

NwkSKey+AppEUI

AppEUI+AppsKey

STM32L151 processor

NwkS App

Semtech SX1272

STM32L151

LoRaWAN LoRaRadio Applicatie

KPN Network

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LoRa modules can be very small

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Roaming agreements are in progress with Belgium and France (2016)

Thank you

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Erik Bruinzeel, Irene de Ruijter, Timme Hovinga Contact us or check kpn.com/LoRa

info-ioe@kpn.com

(+31)(0)88-6601034

In/KPN IoE

#kpnioe