Which protocol to use?

[Pavel K]

Hi everyone,

We are trying to choose which protocol use for connecting devices based on Nordic SoCs. We use devices in following way:

1. about 300 - 500 devices (wearable - smart watches)
2. industrial site, walls, concrete, metal etc.
3. site area up to 1 km2
4. each devices send data to gateway - 6 kbytes every 10-20 minutes and 190 kbytes 3 times a day
5. protocol should support identification of sent data (from which device it arrived)

I know it is a lot to ask, but what would you suggest?

Regards Pavel

[Pavel K]

Hello Jan,

Thank you very much for your reply! I do apologise for not properly explaining all the details, let me provide information on your questions:

1. Devices are moving - its a wearable device for people
2. Its more towards fewer routers, if it is bluetooth on site go 1 km2, that will be a lot of nodes, very hard to maintain and install
3. All devices are battery powered, 190 mAh, we do need to be economical

I hope that gives clarity.

Regards Pavel

[endnode]

Thanks for details and I guess we both see that these are pretty much incompatible with any low-power 2.4GHz radio solution;) You can try to solve it with BT SIG mash or other proprietary mash network with only few boa5rder routers but my guess is that it won't work reliably.