There are only two stations, A and B, in a bus 1-persistence CSMA/CD network with T_p= 25.6 μs and T_fr= 51.2 μs. Station A has a frame to send to station B. The frame is unsuccessful two times and succeeds on the third try. Draw a time line diagram for this problem. Assume that the R is 1 and 2 respectively and ignore the time for sending a jamming signal (seeFigure 12.13).  

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Station has a frame to send K = 0 Legend T: Frame average transmission time K : Number of attempts R : (random number): 0 to 2* – 1 Tp: (Backoff time) = R × Tf Wait TB Apply one of the persistence methods seconds Create random Done or [false] Transmit number R collision? and receive [true] [true] Send a Collision K< 15 ? [true] K = K + 1 |[false] jamming signal detected? [false] Abort Success