Hi Thomas,
I'm not really an expert in this field, so maybe I used the wrong
terminology. For what I could understand (let me know if I'm wrong), for
routing packets in 802.15.4 networks, RPL is used. And RPL needs a (DAG)
root, that generally is the gateway/border router. This is what I meant
with coordinator.
I don't know exactly how it works, but I guess that it maintains a list
of all the nodes in the network, and from here my consideration that if
you have a big network (>1000 nodes?) you need quite some resources to
keep the table, hence the idea of running this role in a bigger CPU
(Allwinner A13) and using R21 only as transceiver.
Has somebody already tried this kind of setup?
(RIOT 6LowPAN <-> RIOT RPL <-> SLIP <-> UART <-----> UART <-> SLIP <->
802.15.4 <-> RF)
Kind regards,
Patrick
On 11/23/2015 12:43 PM, Thomas Eichinger wrote:
Hi Patrick,
On 23 Nov 2015, at 12:07 CET(+0100), Hauke Petersen wrote:
On 20.11.2015 20:48, Patrick Rota - Swissponic Sagl wrote:
SAMR21 is pretty capable, but with 32kB RAM would it be able to
coordinate hundreds of nodes? Somebody ever tried with a large
number of nodes? The original reasoning behind putting the
coordinator on the A13 side was for managing a large number of notes.
You might have a point here, but I am probably the wrong person to ask.
Could you elaborate how you want to use 802.15.4 PAN coordinator role
and for what?
Do you want to use it combined with a network management protocol?
Please note that
none of existing or PR'ed MAC protocols for RIOT utilises this role yet.
Best, Thomas
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