PP Presentation
- It takes F/C seconds to xmit a frame and F/C+I seconds for the frame to arrive and get serviced. In F/C + A/C +2I seconds the sender has finished processing the ACK.
- Only D data bits were sent in 2I + (F+A)/C seconds.
- for a perfect channel. Therefore H+A+2CI are the overhead in the protocol (which contribute nothing if the channel is error free).
- Channels have errors, however. The sender timesout in F/C + T seconds, this uses F+CT bits of bandwidth.
U
=
D
H
+
D
+
A
+
2
CI