Hi Team,
I am currently working with nrf52840 dev kit. My requirement is sending custom messages indoors.
I have designed custom boards called Tags (nrf52840) with electric Ink displays for displaying messages received.
My requirement is,
1)Battery of tags lasting at least a weak or more with tracking based on BLE rssi(proximity).
2)The application payload size is 20 bytes(at least).
3)Data latency: 5 sec (max).
Some constraints include,
1)No wifi available near tags. Wifi available only at the Gateway Node.
2)Using coil cell batteries as in BLE.
3)Tags can be moved from place to place reaching any routers.
I have been testing the BLE mesh, Thread, Zigbee Protocols.
Everything has its own Pros and Cons.
In BLE mesh,
I faced issues with limited payload size in multiple hops.
In thread and Zigbee ,
I am not sure about how child node dynamically change its parent node based on nearest parent that affects data latency.
Multi protocol required (Thread+BLE or Zigbee+BLE) as BLE tracking is primary. And I am not sure about battery power consumption with Multi protocol.
Please suggest the apt solution for our requirements with some comparative analysis,
Thanks in advance,
Vishnu Ram S.
