Maybe the protocol could have arbitration built in? If one was clever you could actually have the front of the packet set a priority header, and build the collision detection/avoidance right into the header.
Multiple parties communicate at the same time? Lower number priority electrically could pull the voltage low, dominating the transmission.
That way, priority messages always get through with no overhead or central communication required.
Multiple parties communicate at the same time? Lower number priority electrically could pull the voltage low, dominating the transmission.
That way, priority messages always get through with no overhead or central communication required.