[Freedombox-discuss] Lorawan IoT protocol
Yes, LoraWan is for low volume data traffic, such as sensors. Cycle
rate should be at 1% to the most, so the idea is that the sensor give
their value, including some hand-shaking, (e.g. temperature) and that's
it. In the other direction there is handshaking and occasionally
firmware upgrades for the sensors.So this technology cannot carry WLAN
traffic, to the most it could provide info about the health status of
your WLAN antennas.
Dietmar
Am Mittwoch, den 21.03.2018, 15:29 +0000 schrieb Graham Cobb:
> On 21/03/18 13:23, sam at bristolwireless.net wrote:
> > It is an interesting tech
>
> Indeed. But LoRaWAN is primarily a Low Power WAN (LPWAN) technology:
> the
> focus is on power saving, large number of nodes and long distance. My
> understanding is that data rates are very low (27kbps as an absolute
> maximum using the LoRa technology and much lower rates are needed if
> long distances are involved), packet sizes are normally very small
> and
> reliability can be poor (and all these trade off against each other).
>
> So IoT and emergency messaging (both often low bandwidth) are very
> relevant use cases. Mesh networking doesn't fit well: user
> expectation
> will be for much higher data rates, and the mesh means that every
> message has to be transmitted several times, reducing effective
> capacity
> even further (LoRaWAN devices communicate with their local gateway
> which
> then normally connects onwards using conventional IP networks).
>
> Note that TheThingsNetwork is a very interesting initiative, but it
> limits capacity even further in order to provide better "fairness"
> for a
> larger number of devices (the issue is the amount of time any single
> device is able to transmit: TTN limits it to 30s per day per device
> --
> less than 100K bytes per day).
>
> So, an interesting technology to experiment with (I plan to do so
> when I
> get some time). But pretty limited in applications.
>
> There is an interesting paper apparently published in IEEE
> Communications Magazine available at:
> https://arxiv.org/pdf/1607.08011.pdf
>
> Graham
>
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> scuss
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