nrf Mesh Light Server sending over proxy sometimes fails

[Andrej]

Hello everybody,

i use two nrd52 dk boards with nrf mesh light server flashed on them (mesh sdk 4.2.0)

They are configured over nrf mesh app to be in the same network and subscribed on the same group address.

In my first test i tried to toggle the led from the proxy node... every toggle event has been executed.

Then i tried to toggle device B (which is not the proxy node) and sometimes the toggle event hasn't been executed or received. 

There are some scanning gaps, because of shared radio (advertising / scanning), but is this the reason?

Currently there are ~40 ble device around me. (collisions?)

How could i improve this behavior?

Best regards Andrej

[Mttrinh]

Hi,

In my first test i tried to toggle the led from the proxy node... every toggle event has been executed.

Then i tried to toggle device B (which is not the proxy node) and sometimes the toggle event hasn't been executed or received. 

I'm not completely sure what the issue is here. What is the proxy node here? Do you mean the phone? Or do you mean the board that is connected to the phone using proxy?

Are you trying to toggle the LED on the server boards with the nRF Mesh app on the phone?

Can you elaborate?

[Andrej]

Phone is connected through nrf mesh app to a proxy node (first nrf52 dk board) and tries to send GenericOnOffSet to the second nrf52 dk board.

Both nrf52 dk boards are programmed with nrf_light_switch_server.. both boards are provisioned

My problem is the reliability of this setup. 

Some of the GenericOnOffSet Messages aren't received by the second dk board.

For example 1 of 10 Messages were not received. 

How could i improve the relaibility of this system?

[Mttrinh]

How exactly are you sending GenericOnOffSet to the second board? Are you sending to a group address?

Have you made any modifications to the Light switch server example? Are you using an Android or iOS phone?

Currently there are ~40 ble device around me. (collisions?)

This could be a reason for the packet loss because of collision. If possible, you should test this in a less noisy environment to see if there is any improvement.

[Andrej]

I am using an Android phone and no modifications were made in the light switch server example.

In my tests i tried both ways via unicast and group address.

[Mttrinh]

Can you try testing in a less noisy environment?

[Andrej]

Ok i will try in a less noisy environment.

Thanks for your advice and i'll write back as soon as possible.