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Welcome back.
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This chapter is probably one of the most important because we dive into the Lorawan protocol.
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There will be different parts in this chapter, and the first one will be about the overall Lorawan ecosystem.
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.
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This includes the Lorawan version specification provided by the Lorawan Alliance.
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And in that part, we take the opportunity to explain the differences between the Lora modulation and
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the Lorawan protocol.
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Obviously will also see the three main parts of the Lorawan
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infrastructure, which are the end devices, the gateways and the Lorawan server.
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The Lorawan infrastructure is a secure network and as every secure networks, it needs confidentiality, authentication
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and data integrity.
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and we will therefore explain what solutions have been implemented to make it work.
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On the device size we will see the different classes name A, B or C with these end device will do some tests to highlight
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their capabilities.
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The second part is about the two different methods to activate an end device on the network server.
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There are two types called ABP or OTAA.
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When we begin with Lorawan network, it's quite difficult to understand what are they for.
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That's why in the third part will present a series of "how to" to present demand situation you will have
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to deal with when implementing a Lorawan infrastructure, how to prevent replay attack, then second
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how to change the communication parameters, and third, how to change network operators.
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And we will see that depending on your activation method, the answer of this question would be different.
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Finally, you remember that Lora transmission parameters like the spreading factor or the power transmission
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have a huge influence on the end device consumption.
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But it's not that easy to find a trade off between the power consumption, the range and the bitrate.
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So how can we do it now?
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I want provide a solution called ADR for adaptive data rate.
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ADR is an automatic way to optimize end device autonomy while being sure that it can always reach the
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network.
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So that's a very challenging agenda, but I'm sure we can do it together.
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Let's get to work.