Maximum transmission range vs maximum interference distance

Question

I am wondering if the theoretical maximum transmission range under Omnet++ (veins framework) is the same as the maximum interference distance.

I want to confirm some

Answer 1

You are correct: if a frame's receive power in Veins 3 is under the sensitivity threshold, the packet can never be decoded (independent of its received SINR).

The free space path loss formula used in Veins 3 is:

For a transmit power of 20 mW and a sensitivity threshold of -94 dBm (I am assuming that this is just a typo in your question), the distance where the received power drops under the sensitivity threshold can be calculated to be (roughly) 907 meters.

Since you specifically asked for the maximum interference range, though, please note that the transmit power can be selected for each frame and the sensitivity threshold can be configured for each radio. They are therefore not used for calculating the maximum interference range (the distance where a sender is deemed so far away that it will not even contribute interference). This distance is calculated independently by the global ConnectionManager module, whose job it is to deliver "ongoing radio transmission" events to all affected modules. It uses a completely separate (global) set of parameters to calculate this range.