To understand the uses of K in Figure 12.13, find the probability that a station can send
Question:
Figure 12.13
a. After one failure.
b. After four failures.
Transcribed Image Text:
Station has a frame to send K = 0 Legend Tip: Frame average transmission time K : Number of attempts R : (random number): 0 to 2K – 1 Tg: (Backoff time) = R × Tfr Wait TB Apply one of the persistence methods seconds ´Create random Done or [false] Transmit number R collision? (and receive [true] [true] K < 15 ? Send a Collision [true] jamming signal K = K + 1 [false] detected? [false] Abort Success
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