I have a project which there is a need to be implemented many sensor nodes in a star network topology. One collector-gateway and multiple transmitters.
The farthest sensor node from the "collector-gateway" would be about 2km.
All sensor nodes would work with battery and would take measurement from their environment such as soil moisture, air temperature, air humidity, sound level and some other "internal data" about its status like internal battery level etc...
The number of transmitters may be more than 20, or in some cases it may exceed the number of 100. It depends on the needs. So I need something that I can customize easily.
First, I was thinking about using TI's CC1310 but I have second thoughts to go with LoRa.
What physical interface or technology would be fit better in my case?
Either way I intend to use my own GSM based gateway and my own server with my own protocol based on HTTP connection.