Im new to Lorawan.
I really like the Chirpstack project, it was pretty easy to setup on my R Pi with Ubuntu.
I am looking to build a Lorawan compliant system for a small node-count (under 25) and for an area of about 1km2 in an urban area.
I would like to design it such that it is likely to cause as little interference to other systems particularly TTN which has quite a few gateways in the location and use low-cost single-channel forwarders.
I would be very interested to learn if anyone has done this and what configs have been used:
Things I have considered so far:
- Use standard duty cycle rules , or lower power node <10dBm ERP
- Use non-TTN frequencies (868.7, 868.9 MHz) and/or not using channels 0,1,2
- use non-TTN spreading factors for either fixed SF or ADR
- RX2 use non-TTN frequency
- Link budget ERP plan for 1km2
- Use LBT for reduce collisions and time on air - if possible
- Use >2 single-channel “gateways” for better coverage and down-link duty-cycle limit sharing, is that possible?
- Careful use of class A, B C devices
- No confirmed uplink messages
- No gateway pings
- compressed/reduced payload design
- activation? ABP only?
Im really trying to scope out if a lorwan-lite is a thing.