Iam reading through the frame handshake in WiFi. Also went through some of the good articles in this forum.
I understand that to avoid collision, RST/CTS handshake is used in the wireless Air medium.
I have attached the RTS-CTS handshake and I would like to know if these frames are unicast or broadcast.
Since they are sent from a specific source say Wifi Client to a specifc destination say Wifi AP, i assume the RTS and CTS signals to be unicast but i dont understand then how the other wifi stations/clients will listen/get the duration (NAV)
Also regarding the backoff time interval, I would like to know how this time is decided by the waiting clients? Say client A and Client B are waiting for the medium to be free. Both get the NAV duration as client C is using the medium. Now after the NAV time is complete, the clients A and B will wait for a backoff time.
>how much is this random time?
>Can both set the same backoff time say 1? >Will the clients with min backoff time will get to check the medium first.
>What is the max time each client will get to use the medium? What if Cient C using the medium has lots of data to send. Will clients A and B have to wait till Client C finishes? OR is there a max time duration.