does VBar use exclusively LBT (Listen Before Talk/Transmit) or exclusively MU (Media Utilisation or whatever it is called when the TX transmits only a short time) or a combination of both ?
We are using indeed a combination. We are switching between adaptive and non adaptive mode depending what fits better.
This gives maximum possible range and fast updating exactly at the needed situation. Since our packets are very short because of the high efficency of the protocol, the output power penalty in MU Mode is very low.