I use OMNeT++-4.6, sumo-0.22.0 and Veins-4a2.
In my scenario, when an RSU receives a message from a node, it sends an ACK using the prepareWSM method:
sendWSM(prepareWSM("ack", ackLengthBits, type_SCH, ackPriority, senderId , 2))
So, the RSU sends an ACK to senderID which is the sender node of the message.
In my log file, I notice that there are some nodes - not only the original sender node - which receive this ACK.
I need to know if prepareWSM method diffuse the ACK to all nodes encountered or if what I did to send only the ACK to the sender node is correct?