nRF5 SDK for Thread and Zigbee v1.0.0 test for large network

[janR]

Hi,

I'm wondering if anybody has performed a test of, or has experience with Nordic Semiconductor thread mesh stack (nRF5 SDK for Thread and Zigbee v1.0.0) in a large scale network setting.

With large scale network I mean ~200 nodes.
Is the stack stable in such a network?

We are planning a setup of ~200 thread nodes with router and/or REEDs roles and one border router.
Nodes will send unicast Coap messages of 20 bytes with a frequency of ~2Hz to border router, and nodes will recieve multicast Coap messages of a couple of bytes now and then from border router.

Nodes will be nRF52840 based, and border router Raspberry pi 3 with nRF52840 as NCP.

Before we try ourselves, is there anybody that have used the thread stack in a above mentioned setup (included Nordic Semiconductor), and succeeded?

Regards, Jan

[haakonsh]

Hey Jan,

I've asked the developers if they've got some information to share. I expect a reply in a week. 

Cheers,

Håkon.

[haakonsh]

Got an answer already:

No, we didn’t test that big networks yet. We are going to do it though. 

For now we have some test setups containing 24 and 33 nodes. 

Anyway I guess the network should work, however 200 nodes sending with 2Hz freq, it gives 10ms for one packet. The 15.4 frame itself on the air can be transmitted up to 4.5ms and so by adding CSMA/CA algorithm and retransmissions.. it might be possible 

 However do remember to use Openthread libraries from Master branch, since we found the issue after release which might be visible in such big network. We will update libraries of course for next release.

 

https://github.com/openthread/openthread