PPT Slide
Go back n/selective repeat
- Pipelining: (continued)
- If channel capacity is b bps, frame size l bits & the round trip propagation time R sec, the time required to send a single frame is l/b sec.
- There will be a total channel delay of R sec
- In stop-and-wait line is busy for l/b and idle for R sec giving a line utilization for l/(l+bR).
- Thus pipelining can be used to keep the line busy in the interval.
- What to do if errors occur during pipelining?
- Answer: go back n, or selective repeat