nRF52840 BLE mesh power consumption

[ssargsyan]

HI,
I'm using the nrf52840 BLE mesh (nrf5_SDK_for_Mesh_v2.0.0) and some other sensors which drivers written by using nRF5_SDK_15.0.0 . Can you help to understand how to do the power consumption management? Is there any application notes how to do it ?

Thanks,

[Hung Bui]

Hi , 

 

As I understand you want to use mesh with low power ? 

Our current implementation in Mesh SDK v2.1 doesn't support Low Power Node and Friend node yet. 

If you want to have something low power, you may need to implement that on your own.

If it's a sensor node that doesn't receive many commands and the main task is to collect data and then send the data to mesh, you can put the node to sleep and not connect to Mesh. It only need to wake up and update the IV index before it can send data again. By spec, it should not sleep for more than 48 weeks.

It can also request command/data from other when it wakes up. This is very similar to Low power, Friend node, but more simple. 

You need to keep a number of nodes staying awake all the time to act as the backbone of the network. These nodes need to cover the whole mesh network coverage.